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Diffstat (limited to 'html/032array.cc.html')
-rw-r--r--html/032array.cc.html759
1 files changed, 385 insertions, 374 deletions
diff --git a/html/032array.cc.html b/html/032array.cc.html
index 317ec711..0b13a70d 100644
--- a/html/032array.cc.html
+++ b/html/032array.cc.html
@@ -120,10 +120,10 @@ if ('onhashchange' in window) {
 <span id="L55" class="LineNr"> 55 </span>  type_tree* array_length_from_type = product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>
 <span id="L56" class="LineNr"> 56 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span>
 <span id="L57" class="LineNr"> 57 </span>  <span class="Conceal">¦</span> array_length_from_type = array_length_from_type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
-<span id="L58" class="LineNr"> 58 </span>  <span class="Normal">int</span> <a href='032array.cc.html#L386'>array_length</a> = <a href='002test.cc.html#L92'>to_integer</a><span class="Delimiter">(</span>array_length_from_type<span class="Delimiter">-&gt;</span>name<span class="Delimiter">);</span>
+<span id="L58" class="LineNr"> 58 </span>  <span class="Normal">int</span> <a href='032array.cc.html#L397'>array_length</a> = <a href='002test.cc.html#L92'>to_integer</a><span class="Delimiter">(</span>array_length_from_type<span class="Delimiter">-&gt;</span>name<span class="Delimiter">);</span>
 <span id="L59" class="LineNr"> 59 </span>  <span class="Comment">// initialize array length, so that size_of will work</span>
-<span id="L60" class="LineNr"> 60 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing &quot;</span> &lt;&lt; <a href='032array.cc.html#L386'>array_length</a> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; base_address &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L61" class="LineNr"> 61 </span>  <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">,</span> <a href='032array.cc.html#L386'>array_length</a><span class="Delimiter">);</span>  <span class="Comment">// in array elements</span>
+<span id="L60" class="LineNr"> 60 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing &quot;</span> &lt;&lt; <a href='032array.cc.html#L397'>array_length</a> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; base_address &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L61" class="LineNr"> 61 </span>  <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">,</span> <a href='032array.cc.html#L397'>array_length</a><span class="Delimiter">);</span>  <span class="Comment">// in array elements</span>
 <span id="L62" class="LineNr"> 62 </span>  <span class="Normal">int</span> size = size_of<span class="Delimiter">(</span>product<span class="Delimiter">);</span>  <span class="Comment">// in locations</span>
 <span id="L63" class="LineNr"> 63 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;creating array of size &quot;</span> &lt;&lt; size &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
 <span id="L64" class="LineNr"> 64 </span>  <span class="Comment">// initialize array</span>
@@ -165,7 +165,7 @@ if ('onhashchange' in window) {
 <span id="L100" class="LineNr">100 </span>
 <span id="L101" class="LineNr">101 </span><span class="Delimiter">:(before &quot;End <a href='021check_instruction.cc.html#L100'>types_coercible</a> Special-cases&quot;)</span>
 <span id="L102" class="LineNr">102 </span><span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_array<span class="Delimiter">(</span>from<span class="Delimiter">)</span> &amp;&amp; is_mu_array<span class="Delimiter">(</span>to<span class="Delimiter">))</span>
-<span id="L103" class="LineNr">103 </span>  <span class="Identifier">return</span> types_strictly_match<span class="Delimiter">(</span><a href='032array.cc.html#L370'>array_element</a><span class="Delimiter">(</span>from<span class="Delimiter">.</span>type<span class="Delimiter">),</span> <a href='032array.cc.html#L370'>array_element</a><span class="Delimiter">(</span>to<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
+<span id="L103" class="LineNr">103 </span>  <span class="Identifier">return</span> types_strictly_match<span class="Delimiter">(</span><a href='032array.cc.html#L381'>array_element</a><span class="Delimiter">(</span>from<span class="Delimiter">.</span>type<span class="Delimiter">),</span> <a href='032array.cc.html#L381'>array_element</a><span class="Delimiter">(</span>to<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
 <span id="L104" class="LineNr">104 </span>
 <span id="L105" class="LineNr">105 </span><span class="Delimiter">:(before &quot;End size_of(reagent r) Special-cases&quot;)</span>
 <span id="L106" class="LineNr">106 </span><span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &amp;&amp; r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>value == get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;array&quot;</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
@@ -173,7 +173,7 @@ if ('onhashchange' in window) {
 <span id="L108" class="LineNr">108 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; r<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' is an array of what?</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
 <span id="L109" class="LineNr">109 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
 <span id="L110" class="LineNr">110 </span>  <span class="Delimiter">}</span>
-<span id="L111" class="LineNr">111 </span>  <span class="Identifier">return</span> <span class="Comment">/*</span><span class="Comment">space for length</span><span class="Comment">*/</span><span class="Constant">1</span> + <a href='032array.cc.html#L386'>array_length</a><span class="Delimiter">(</span>r<span class="Delimiter">)</span>*size_of<span class="Delimiter">(</span><a href='032array.cc.html#L370'>array_element</a><span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
+<span id="L111" class="LineNr">111 </span>  <span class="Identifier">return</span> <span class="Comment">/*</span><span class="Comment">space for length</span><span class="Comment">*/</span><span class="Constant">1</span> + <a href='032array.cc.html#L397'>array_length</a><span class="Delimiter">(</span>r<span class="Delimiter">)</span>*size_of<span class="Delimiter">(</span><a href='032array.cc.html#L381'>array_element</a><span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
 <span id="L112" class="LineNr">112 </span><span class="Delimiter">}</span>
 <span id="L113" class="LineNr">113 </span>
 <span id="L114" class="LineNr">114 </span><span class="Delimiter">:(before &quot;End size_of(type) Non-atom Special-cases&quot;)</span>
@@ -270,7 +270,7 @@ if ('onhashchange' in window) {
 <span id="L205" class="LineNr">205 </span>
 <span id="L206" class="LineNr">206 </span><span class="Delimiter">:(before &quot;End compute_container_sizes Non-atom Special-cases&quot;)</span>
 <span id="L207" class="LineNr">207 </span><span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;array&quot;</span><span class="Delimiter">)</span>
-<span id="L208" class="LineNr">208 </span>  compute_container_sizes<span class="Delimiter">(</span><a href='032array.cc.html#L370'>array_element</a><span class="Delimiter">(</span>type<span class="Delimiter">),</span> pending_metadata<span class="Delimiter">,</span> location_for_error_messages<span class="Delimiter">);</span>
+<span id="L208" class="LineNr">208 </span>  compute_container_sizes<span class="Delimiter">(</span><a href='032array.cc.html#L381'>array_element</a><span class="Delimiter">(</span>type<span class="Delimiter">),</span> pending_metadata<span class="Delimiter">,</span> location_for_error_messages<span class="Delimiter">);</span>
 <span id="L209" class="LineNr">209 </span>
 <span id="L210" class="LineNr">210 </span><span class="Delimiter">:(before &quot;End Unit Tests&quot;)</span>
 <span id="L211" class="LineNr">211 </span><span class="Normal">void</span> <a href='032array.cc.html#L211'>test_container_sizes_from_array</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
@@ -334,381 +334,392 @@ if ('onhashchange' in window) {
 <span id="L269" class="LineNr">269 </span>  <a href='002test.cc.html#L32'>CHECK_EQ</a><span class="Delimiter">(</span><a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>Container_metadata<span class="Delimiter">)</span>-old_size<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>
 <span id="L270" class="LineNr">270 </span><span class="Delimiter">}</span>
 <span id="L271" class="LineNr">271 </span>
-<span id="L272" class="LineNr">272 </span><span class="SalientComment">//:: To access elements of an array, use 'index'</span>
-<span id="L273" class="LineNr">273 </span>
-<span id="L274" class="LineNr">274 </span><span class="Delimiter">:(scenario index)</span>
-<span id="L275" class="LineNr">275 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L276" class="LineNr">276 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L277" class="LineNr">277 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L278" class="LineNr">278 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L279" class="LineNr">279 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L280" class="LineNr">280 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span>/index  <span class="Comment"># the index must be a non-negative whole number</span>
-<span id="L281" class="LineNr">281 </span>]
-<span id="L282" class="LineNr">282 </span><span class="traceContains">+mem: storing 14 in location 5</span>
-<span id="L283" class="LineNr">283 </span>
-<span id="L284" class="LineNr">284 </span><span class="Delimiter">:(scenario index_compound_element)</span>
-<span id="L285" class="LineNr">285 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L286" class="LineNr">286 </span>  <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span><a href='043space.cc.html#L76'>address</a> number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)}</span><span class="Special"> &lt;- </span>create-array
-<span id="L287" class="LineNr">287 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L288" class="LineNr">288 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L289" class="LineNr">289 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L290" class="LineNr">290 </span>  <span class="Constant">5</span>:<a href='043space.cc.html#L76'>address</a>:num<span class="Special"> &lt;- </span>index <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span><a href='043space.cc.html#L76'>address</a> number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)},</span> <span class="Constant">0</span>
-<span id="L291" class="LineNr">291 </span>]
-<span id="L292" class="LineNr">292 </span><span class="traceContains">+mem: storing 14 in location 5</span>
-<span id="L293" class="LineNr">293 </span>
-<span id="L294" class="LineNr">294 </span><span class="Delimiter">:(scenario index_direct_offset)</span>
-<span id="L295" class="LineNr">295 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L296" class="LineNr">296 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L297" class="LineNr">297 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L298" class="LineNr">298 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L299" class="LineNr">299 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L300" class="LineNr">300 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
-<span id="L301" class="LineNr">301 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:num<span class="Delimiter">,</span> <span class="Constant">5</span>:num
+<span id="L272" class="LineNr">272 </span><span class="Normal">void</span> <a href='032array.cc.html#L272'>test_container_sizes_on_unknown_type</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L273" class="LineNr">273 </span>  <span class="Comment">// a container we don't have the size for</span>
+<span id="L274" class="LineNr">274 </span>  reagent container<span class="Delimiter">(</span><span class="Constant">&quot;x:point&quot;</span><span class="Delimiter">);</span>
+<span id="L275" class="LineNr">275 </span>  <span class="Normal">int</span> old_size = <a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>Container_metadata<span class="Delimiter">);</span>
+<span id="L276" class="LineNr">276 </span>  <span class="Comment">// scanning address to array with a typo</span>
+<span id="L277" class="LineNr">277 </span>  reagent r<span class="Delimiter">(</span><span class="Constant">&quot;x:<a href='043space.cc.html#L76'>address</a>:array:adress:number&quot;</span><span class="Delimiter">);</span>
+<span id="L278" class="LineNr">278 </span>  compute_container_sizes<span class="Delimiter">(</span>r<span class="Delimiter">,</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">);</span>  <span class="Comment">// should not crash</span>
+<span id="L279" class="LineNr">279 </span>  <span class="Comment">// no non-container types precomputed</span>
+<span id="L280" class="LineNr">280 </span>  <a href='002test.cc.html#L32'>CHECK_EQ</a><span class="Delimiter">(</span><a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>Container_metadata<span class="Delimiter">),</span> old_size<span class="Delimiter">);</span>
+<span id="L281" class="LineNr">281 </span><span class="Delimiter">}</span>
+<span id="L282" class="LineNr">282 </span>
+<span id="L283" class="LineNr">283 </span><span class="SalientComment">//:: To access elements of an array, use 'index'</span>
+<span id="L284" class="LineNr">284 </span>
+<span id="L285" class="LineNr">285 </span><span class="Delimiter">:(scenario index)</span>
+<span id="L286" class="LineNr">286 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L287" class="LineNr">287 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L288" class="LineNr">288 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L289" class="LineNr">289 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L290" class="LineNr">290 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L291" class="LineNr">291 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span>/index  <span class="Comment"># the index must be a non-negative whole number</span>
+<span id="L292" class="LineNr">292 </span>]
+<span id="L293" class="LineNr">293 </span><span class="traceContains">+mem: storing 14 in location 5</span>
+<span id="L294" class="LineNr">294 </span>
+<span id="L295" class="LineNr">295 </span><span class="Delimiter">:(scenario index_compound_element)</span>
+<span id="L296" class="LineNr">296 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L297" class="LineNr">297 </span>  <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span><a href='043space.cc.html#L76'>address</a> number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)}</span><span class="Special"> &lt;- </span>create-array
+<span id="L298" class="LineNr">298 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L299" class="LineNr">299 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L300" class="LineNr">300 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L301" class="LineNr">301 </span>  <span class="Constant">5</span>:<a href='043space.cc.html#L76'>address</a>:num<span class="Special"> &lt;- </span>index <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span><a href='043space.cc.html#L76'>address</a> number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)},</span> <span class="Constant">0</span>
 <span id="L302" class="LineNr">302 </span>]
-<span id="L303" class="LineNr">303 </span><span class="traceContains">+mem: storing 14 in location 6</span>
+<span id="L303" class="LineNr">303 </span><span class="traceContains">+mem: storing 14 in location 5</span>
 <span id="L304" class="LineNr">304 </span>
-<span id="L305" class="LineNr">305 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
-<span id="L306" class="LineNr">306 </span>INDEX<span class="Delimiter">,</span>
-<span id="L307" class="LineNr">307 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
-<span id="L308" class="LineNr">308 </span><a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;index&quot;</span><span class="Delimiter">,</span> INDEX<span class="Delimiter">);</span>
-<span id="L309" class="LineNr">309 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
-<span id="L310" class="LineNr">310 </span><span class="Normal">case</span> INDEX: <span class="Delimiter">{</span>
-<span id="L311" class="LineNr">311 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L312" class="LineNr">312 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'index' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L313" class="LineNr">313 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L314" class="LineNr">314 </span>  <span class="Delimiter">}</span>
-<span id="L315" class="LineNr">315 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L316" class="LineNr">316 </span>  <span class="Comment">// Update INDEX base in Check</span>
-<span id="L317" class="LineNr">317 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_array<span class="Delimiter">(</span>base<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L318" class="LineNr">318 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'index' on a non-array '&quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L319" class="LineNr">319 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L320" class="LineNr">320 </span>  <span class="Delimiter">}</span>
-<span id="L321" class="LineNr">321 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
-<span id="L322" class="LineNr">322 </span>  <span class="Comment">// Update INDEX index in Check</span>
-<span id="L323" class="LineNr">323 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>index<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L324" class="LineNr">324 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;second ingredient of 'index' should be a number, but got '&quot;</span> &lt;&lt; index<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L325" class="LineNr">325 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L326" class="LineNr">326 </span>  <span class="Delimiter">}</span>
-<span id="L327" class="LineNr">327 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L328" class="LineNr">328 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> product = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L329" class="LineNr">329 </span>  <span class="Comment">// Update INDEX product in Check</span>
-<span id="L330" class="LineNr">330 </span>  reagent<span class="Comment">/*</span><span class="Comment">local</span><span class="Comment">*/</span> element<span class="Delimiter">;</span>
-<span id="L331" class="LineNr">331 </span>  element<span class="Delimiter">.</span>type = <a href='032array.cc.html#L366'>copy_array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
-<span id="L332" class="LineNr">332 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>product<span class="Delimiter">,</span> element<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L333" class="LineNr">333 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'index' on '&quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' can't be saved in '&quot;</span> &lt;&lt; product<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'; type should be '&quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
-<span id="L334" class="LineNr">334 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L335" class="LineNr">335 </span>  <span class="Delimiter">}</span>
-<span id="L336" class="LineNr">336 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L337" class="LineNr">337 </span><span class="Delimiter">}</span>
-<span id="L338" class="LineNr">338 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
-<span id="L339" class="LineNr">339 </span><span class="Normal">case</span> INDEX: <span class="Delimiter">{</span>
-<span id="L340" class="LineNr">340 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L341" class="LineNr">341 </span>  <span class="Comment">// Update INDEX base in Run</span>
-<span id="L342" class="LineNr">342 </span>  <span class="Normal">int</span> base_address = base<span class="Delimiter">.</span>value<span class="Delimiter">;</span>
-<span id="L343" class="LineNr">343 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;base <a href='043space.cc.html#L76'>address</a> is &quot;</span> &lt;&lt; base_address &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L344" class="LineNr">344 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>base_address == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L345" class="LineNr">345 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;tried to access location 0 in '&quot;</span> &lt;&lt; current_instruction<span class="Delimiter">().</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L346" class="LineNr">346 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L347" class="LineNr">347 </span>  <span class="Delimiter">}</span>
-<span id="L348" class="LineNr">348 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
-<span id="L349" class="LineNr">349 </span>  <span class="Comment">// Update INDEX index in Run</span>
-<span id="L350" class="LineNr">350 </span>  vector&lt;<span class="Normal">double</span>&gt; index_val<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>index<span class="Delimiter">));</span>
-<span id="L351" class="LineNr">351 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &lt; <span class="Constant">0</span> || index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &gt;= <a href='001help.cc.html#L225'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L352" class="LineNr">352 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;invalid index &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; in '&quot;</span> &lt;&lt; current_instruction<span class="Delimiter">().</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L353" class="LineNr">353 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L354" class="LineNr">354 </span>  <span class="Delimiter">}</span>
-<span id="L355" class="LineNr">355 </span>  reagent<span class="Comment">/*</span><span class="Comment">local</span><span class="Comment">*/</span> element<span class="Delimiter">;</span>
-<span id="L356" class="LineNr">356 </span>  element<span class="Delimiter">.</span>type = <a href='032array.cc.html#L366'>copy_array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
-<span id="L357" class="LineNr">357 </span>  element<span class="Delimiter">.</span><a href='010vm.cc.html#L65'>set_value</a><span class="Delimiter">(</span>base_address + <span class="Comment">/*</span><span class="Comment">skip length</span><span class="Comment">*/</span><span class="Constant">1</span> + index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span>*size_of<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
-<span id="L358" class="LineNr">358 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;address to copy is &quot;</span> &lt;&lt; element<span class="Delimiter">.</span>value &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L359" class="LineNr">359 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;its type is &quot;</span> &lt;&lt; <a href='028call_return.cc.html#L158'>to_string</a><span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L360" class="LineNr">360 </span>  <span class="Comment">// Read element</span>
-<span id="L361" class="LineNr">361 </span>  products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>element<span class="Delimiter">));</span>
-<span id="L362" class="LineNr">362 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L363" class="LineNr">363 </span><span class="Delimiter">}</span>
-<span id="L364" class="LineNr">364 </span>
-<span id="L365" class="LineNr">365 </span><span class="Delimiter">:(code)</span>
-<span id="L366" class="LineNr">366 </span>type_tree* <a href='032array.cc.html#L366'>copy_array_element</a><span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L367" class="LineNr">367 </span>  <span class="Identifier">return</span> <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*array_element<span class="Delimiter">(</span>type<span class="Delimiter">));</span>
-<span id="L368" class="LineNr">368 </span><span class="Delimiter">}</span>
-<span id="L369" class="LineNr">369 </span>
-<span id="L370" class="LineNr">370 </span>type_tree* <a href='032array.cc.html#L370'>array_element</a><span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L371" class="LineNr">371 </span>  assert<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">);</span>
-<span id="L372" class="LineNr">372 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L373" class="LineNr">373 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>
-<span id="L374" class="LineNr">374 </span>  <span class="Delimiter">}</span>
-<span id="L375" class="LineNr">375 </span>  <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L376" class="LineNr">376 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
-<span id="L377" class="LineNr">377 </span>  <span class="Delimiter">}</span>
-<span id="L378" class="LineNr">378 </span>  <span class="Comment">// hack: support array:num:3 without requiring extra parens</span>
-<span id="L379" class="LineNr">379 </span>  <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left &amp;&amp; type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; <a href='002test.cc.html#L86'>is_integer</a><span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L380" class="LineNr">380 </span>  <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">);</span>
-<span id="L381" class="LineNr">381 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
-<span id="L382" class="LineNr">382 </span>  <span class="Delimiter">}</span>
-<span id="L383" class="LineNr">383 </span>  <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>
-<span id="L384" class="LineNr">384 </span><span class="Delimiter">}</span>
-<span id="L385" class="LineNr">385 </span>
-<span id="L386" class="LineNr">386 </span><span class="Normal">int</span> <a href='032array.cc.html#L386'>array_length</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L387" class="LineNr">387 </span>  <span class="Comment">// x should already be canonized.</span>
-<span id="L388" class="LineNr">388 </span>  <span class="Comment">// hack: look for length in type</span>
-<span id="L389" class="LineNr">389 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right &amp;&amp; !x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right &amp;&amp; !x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom &amp;&amp; !x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right  <span class="Comment">// exactly 3 types</span>
-<span id="L390" class="LineNr">390 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; <a href='002test.cc.html#L86'>is_integer</a><span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>  <span class="Comment">// third 'type' is a number</span>
-<span id="L391" class="LineNr">391 </span>  <span class="Conceal">¦</span> <span class="Comment">// get size from type</span>
-<span id="L392" class="LineNr">392 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span> <a href='002test.cc.html#L92'>to_integer</a><span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">);</span>
+<span id="L305" class="LineNr">305 </span><span class="Delimiter">:(scenario index_direct_offset)</span>
+<span id="L306" class="LineNr">306 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L307" class="LineNr">307 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L308" class="LineNr">308 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L309" class="LineNr">309 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L310" class="LineNr">310 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L311" class="LineNr">311 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
+<span id="L312" class="LineNr">312 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:num<span class="Delimiter">,</span> <span class="Constant">5</span>:num
+<span id="L313" class="LineNr">313 </span>]
+<span id="L314" class="LineNr">314 </span><span class="traceContains">+mem: storing 14 in location 6</span>
+<span id="L315" class="LineNr">315 </span>
+<span id="L316" class="LineNr">316 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
+<span id="L317" class="LineNr">317 </span>INDEX<span class="Delimiter">,</span>
+<span id="L318" class="LineNr">318 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
+<span id="L319" class="LineNr">319 </span><a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;index&quot;</span><span class="Delimiter">,</span> INDEX<span class="Delimiter">);</span>
+<span id="L320" class="LineNr">320 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
+<span id="L321" class="LineNr">321 </span><span class="Normal">case</span> INDEX: <span class="Delimiter">{</span>
+<span id="L322" class="LineNr">322 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L323" class="LineNr">323 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'index' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L324" class="LineNr">324 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L325" class="LineNr">325 </span>  <span class="Delimiter">}</span>
+<span id="L326" class="LineNr">326 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L327" class="LineNr">327 </span>  <span class="Comment">// Update INDEX base in Check</span>
+<span id="L328" class="LineNr">328 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_array<span class="Delimiter">(</span>base<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L329" class="LineNr">329 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'index' on a non-array '&quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L330" class="LineNr">330 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L331" class="LineNr">331 </span>  <span class="Delimiter">}</span>
+<span id="L332" class="LineNr">332 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
+<span id="L333" class="LineNr">333 </span>  <span class="Comment">// Update INDEX index in Check</span>
+<span id="L334" class="LineNr">334 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>index<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L335" class="LineNr">335 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;second ingredient of 'index' should be a number, but got '&quot;</span> &lt;&lt; index<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L336" class="LineNr">336 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L337" class="LineNr">337 </span>  <span class="Delimiter">}</span>
+<span id="L338" class="LineNr">338 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L339" class="LineNr">339 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> product = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L340" class="LineNr">340 </span>  <span class="Comment">// Update INDEX product in Check</span>
+<span id="L341" class="LineNr">341 </span>  reagent<span class="Comment">/*</span><span class="Comment">local</span><span class="Comment">*/</span> element<span class="Delimiter">;</span>
+<span id="L342" class="LineNr">342 </span>  element<span class="Delimiter">.</span>type = <a href='032array.cc.html#L377'>copy_array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
+<span id="L343" class="LineNr">343 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>product<span class="Delimiter">,</span> element<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L344" class="LineNr">344 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'index' on '&quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' can't be saved in '&quot;</span> &lt;&lt; product<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'; type should be '&quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+<span id="L345" class="LineNr">345 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L346" class="LineNr">346 </span>  <span class="Delimiter">}</span>
+<span id="L347" class="LineNr">347 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L348" class="LineNr">348 </span><span class="Delimiter">}</span>
+<span id="L349" class="LineNr">349 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
+<span id="L350" class="LineNr">350 </span><span class="Normal">case</span> INDEX: <span class="Delimiter">{</span>
+<span id="L351" class="LineNr">351 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L352" class="LineNr">352 </span>  <span class="Comment">// Update INDEX base in Run</span>
+<span id="L353" class="LineNr">353 </span>  <span class="Normal">int</span> base_address = base<span class="Delimiter">.</span>value<span class="Delimiter">;</span>
+<span id="L354" class="LineNr">354 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;base <a href='043space.cc.html#L76'>address</a> is &quot;</span> &lt;&lt; base_address &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L355" class="LineNr">355 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>base_address == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L356" class="LineNr">356 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;tried to access location 0 in '&quot;</span> &lt;&lt; current_instruction<span class="Delimiter">().</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L357" class="LineNr">357 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L358" class="LineNr">358 </span>  <span class="Delimiter">}</span>
+<span id="L359" class="LineNr">359 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
+<span id="L360" class="LineNr">360 </span>  <span class="Comment">// Update INDEX index in Run</span>
+<span id="L361" class="LineNr">361 </span>  vector&lt;<span class="Normal">double</span>&gt; index_val<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>index<span class="Delimiter">));</span>
+<span id="L362" class="LineNr">362 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &lt; <span class="Constant">0</span> || index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &gt;= <a href='001help.cc.html#L225'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L363" class="LineNr">363 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;invalid index &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; in '&quot;</span> &lt;&lt; current_instruction<span class="Delimiter">().</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L364" class="LineNr">364 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L365" class="LineNr">365 </span>  <span class="Delimiter">}</span>
+<span id="L366" class="LineNr">366 </span>  reagent<span class="Comment">/*</span><span class="Comment">local</span><span class="Comment">*/</span> element<span class="Delimiter">;</span>
+<span id="L367" class="LineNr">367 </span>  element<span class="Delimiter">.</span>type = <a href='032array.cc.html#L377'>copy_array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
+<span id="L368" class="LineNr">368 </span>  element<span class="Delimiter">.</span><a href='010vm.cc.html#L65'>set_value</a><span class="Delimiter">(</span>base_address + <span class="Comment">/*</span><span class="Comment">skip length</span><span class="Comment">*/</span><span class="Constant">1</span> + index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span>*size_of<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
+<span id="L369" class="LineNr">369 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;address to copy is &quot;</span> &lt;&lt; element<span class="Delimiter">.</span>value &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L370" class="LineNr">370 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;its type is &quot;</span> &lt;&lt; <a href='028call_return.cc.html#L158'>to_string</a><span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L371" class="LineNr">371 </span>  <span class="Comment">// Read element</span>
+<span id="L372" class="LineNr">372 </span>  products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>element<span class="Delimiter">));</span>
+<span id="L373" class="LineNr">373 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L374" class="LineNr">374 </span><span class="Delimiter">}</span>
+<span id="L375" class="LineNr">375 </span>
+<span id="L376" class="LineNr">376 </span><span class="Delimiter">:(code)</span>
+<span id="L377" class="LineNr">377 </span>type_tree* <a href='032array.cc.html#L377'>copy_array_element</a><span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L378" class="LineNr">378 </span>  <span class="Identifier">return</span> <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*array_element<span class="Delimiter">(</span>type<span class="Delimiter">));</span>
+<span id="L379" class="LineNr">379 </span><span class="Delimiter">}</span>
+<span id="L380" class="LineNr">380 </span>
+<span id="L381" class="LineNr">381 </span>type_tree* <a href='032array.cc.html#L381'>array_element</a><span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L382" class="LineNr">382 </span>  assert<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">);</span>
+<span id="L383" class="LineNr">383 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L384" class="LineNr">384 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>
+<span id="L385" class="LineNr">385 </span>  <span class="Delimiter">}</span>
+<span id="L386" class="LineNr">386 </span>  <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L387" class="LineNr">387 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
+<span id="L388" class="LineNr">388 </span>  <span class="Delimiter">}</span>
+<span id="L389" class="LineNr">389 </span>  <span class="Comment">// hack: support array:num:3 without requiring extra parens</span>
+<span id="L390" class="LineNr">390 </span>  <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left &amp;&amp; type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; <a href='002test.cc.html#L86'>is_integer</a><span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L391" class="LineNr">391 </span>  <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">);</span>
+<span id="L392" class="LineNr">392 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
 <span id="L393" class="LineNr">393 </span>  <span class="Delimiter">}</span>
-<span id="L394" class="LineNr">394 </span>  <span class="Comment">// this should never happen at transform time</span>
-<span id="L395" class="LineNr">395 </span>  <span class="Identifier">return</span> <a href='001help.cc.html#L225'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> x<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
-<span id="L396" class="LineNr">396 </span><span class="Delimiter">}</span>
-<span id="L397" class="LineNr">397 </span>
-<span id="L398" class="LineNr">398 </span><span class="Delimiter">:(before &quot;End Unit Tests&quot;)</span>
-<span id="L399" class="LineNr">399 </span><span class="Normal">void</span> <a href='032array.cc.html#L399'>test_array_length_compound</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
-<span id="L400" class="LineNr">400 </span>  <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">3</span><span class="Delimiter">);</span>
-<span id="L401" class="LineNr">401 </span>  <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">14</span><span class="Delimiter">);</span>
-<span id="L402" class="LineNr">402 </span>  <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">);</span>
-<span id="L403" class="LineNr">403 </span>  <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">,</span> <span class="Constant">16</span><span class="Delimiter">);</span>
-<span id="L404" class="LineNr">404 </span>  reagent x<span class="Delimiter">(</span><span class="Constant">&quot;1:array:<a href='043space.cc.html#L76'>address</a>:num&quot;</span><span class="Delimiter">);</span>  <span class="Comment">// 3 types, but not a static array</span>
-<span id="L405" class="LineNr">405 </span>  <a href='012transform.cc.html#L91'>populate_value</a><span class="Delimiter">(</span>x<span class="Delimiter">);</span>
-<span id="L406" class="LineNr">406 </span>  <a href='002test.cc.html#L32'>CHECK_EQ</a><span class="Delimiter">(</span><a href='032array.cc.html#L386'>array_length</a><span class="Delimiter">(</span>x<span class="Delimiter">),</span> <span class="Constant">3</span><span class="Delimiter">);</span>
+<span id="L394" class="LineNr">394 </span>  <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>
+<span id="L395" class="LineNr">395 </span><span class="Delimiter">}</span>
+<span id="L396" class="LineNr">396 </span>
+<span id="L397" class="LineNr">397 </span><span class="Normal">int</span> <a href='032array.cc.html#L397'>array_length</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L398" class="LineNr">398 </span>  <span class="Comment">// x should already be canonized.</span>
+<span id="L399" class="LineNr">399 </span>  <span class="Comment">// hack: look for length in type</span>
+<span id="L400" class="LineNr">400 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right &amp;&amp; !x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right &amp;&amp; !x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom &amp;&amp; !x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right  <span class="Comment">// exactly 3 types</span>
+<span id="L401" class="LineNr">401 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; <a href='002test.cc.html#L86'>is_integer</a><span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>  <span class="Comment">// third 'type' is a number</span>
+<span id="L402" class="LineNr">402 </span>  <span class="Conceal">¦</span> <span class="Comment">// get size from type</span>
+<span id="L403" class="LineNr">403 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span> <a href='002test.cc.html#L92'>to_integer</a><span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">);</span>
+<span id="L404" class="LineNr">404 </span>  <span class="Delimiter">}</span>
+<span id="L405" class="LineNr">405 </span>  <span class="Comment">// this should never happen at transform time</span>
+<span id="L406" class="LineNr">406 </span>  <span class="Identifier">return</span> <a href='001help.cc.html#L225'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> x<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
 <span id="L407" class="LineNr">407 </span><span class="Delimiter">}</span>
 <span id="L408" class="LineNr">408 </span>
-<span id="L409" class="LineNr">409 </span><span class="Normal">void</span> <a href='032array.cc.html#L409'>test_array_length_static</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
-<span id="L410" class="LineNr">410 </span>  reagent x<span class="Delimiter">(</span><span class="Constant">&quot;1:array:num:3&quot;</span><span class="Delimiter">);</span>
-<span id="L411" class="LineNr">411 </span>  <a href='002test.cc.html#L32'>CHECK_EQ</a><span class="Delimiter">(</span><a href='032array.cc.html#L386'>array_length</a><span class="Delimiter">(</span>x<span class="Delimiter">),</span> <span class="Constant">3</span><span class="Delimiter">);</span>
-<span id="L412" class="LineNr">412 </span><span class="Delimiter">}</span>
-<span id="L413" class="LineNr">413 </span>
-<span id="L414" class="LineNr">414 </span><span class="Delimiter">:(scenario index_truncates)</span>
-<span id="L415" class="LineNr">415 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L416" class="LineNr">416 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L417" class="LineNr">417 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L418" class="LineNr">418 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L419" class="LineNr">419 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L420" class="LineNr">420 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">1.5</span>  <span class="Comment"># non-whole number</span>
-<span id="L421" class="LineNr">421 </span>]
-<span id="L422" class="LineNr">422 </span><span class="Comment"># fraction is truncated away</span>
-<span id="L423" class="LineNr">423 </span><span class="traceContains">+mem: storing 15 in location 5</span>
+<span id="L409" class="LineNr">409 </span><span class="Delimiter">:(before &quot;End Unit Tests&quot;)</span>
+<span id="L410" class="LineNr">410 </span><span class="Normal">void</span> <a href='032array.cc.html#L410'>test_array_length_compound</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L411" class="LineNr">411 </span>  <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">3</span><span class="Delimiter">);</span>
+<span id="L412" class="LineNr">412 </span>  <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">14</span><span class="Delimiter">);</span>
+<span id="L413" class="LineNr">413 </span>  <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">);</span>
+<span id="L414" class="LineNr">414 </span>  <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">,</span> <span class="Constant">16</span><span class="Delimiter">);</span>
+<span id="L415" class="LineNr">415 </span>  reagent x<span class="Delimiter">(</span><span class="Constant">&quot;1:array:<a href='043space.cc.html#L76'>address</a>:num&quot;</span><span class="Delimiter">);</span>  <span class="Comment">// 3 types, but not a static array</span>
+<span id="L416" class="LineNr">416 </span>  <a href='012transform.cc.html#L91'>populate_value</a><span class="Delimiter">(</span>x<span class="Delimiter">);</span>
+<span id="L417" class="LineNr">417 </span>  <a href='002test.cc.html#L32'>CHECK_EQ</a><span class="Delimiter">(</span><a href='032array.cc.html#L397'>array_length</a><span class="Delimiter">(</span>x<span class="Delimiter">),</span> <span class="Constant">3</span><span class="Delimiter">);</span>
+<span id="L418" class="LineNr">418 </span><span class="Delimiter">}</span>
+<span id="L419" class="LineNr">419 </span>
+<span id="L420" class="LineNr">420 </span><span class="Normal">void</span> <a href='032array.cc.html#L420'>test_array_length_static</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L421" class="LineNr">421 </span>  reagent x<span class="Delimiter">(</span><span class="Constant">&quot;1:array:num:3&quot;</span><span class="Delimiter">);</span>
+<span id="L422" class="LineNr">422 </span>  <a href='002test.cc.html#L32'>CHECK_EQ</a><span class="Delimiter">(</span><a href='032array.cc.html#L397'>array_length</a><span class="Delimiter">(</span>x<span class="Delimiter">),</span> <span class="Constant">3</span><span class="Delimiter">);</span>
+<span id="L423" class="LineNr">423 </span><span class="Delimiter">}</span>
 <span id="L424" class="LineNr">424 </span>
-<span id="L425" class="LineNr">425 </span><span class="Delimiter">:(scenario index_out_of_bounds)</span>
-<span id="L426" class="LineNr">426 </span><span class="Special">% Hide_errors = true;</span>
-<span id="L427" class="LineNr">427 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L428" class="LineNr">428 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L429" class="LineNr">429 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L430" class="LineNr">430 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L431" class="LineNr">431 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L432" class="LineNr">432 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L433" class="LineNr">433 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L434" class="LineNr">434 </span>  <span class="Constant">7</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L435" class="LineNr">435 </span>  index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">4</span>  <span class="Comment"># less than size of array in locations, but larger than its length in elements</span>
-<span id="L436" class="LineNr">436 </span>]
-<span id="L437" class="LineNr">437 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index 4 in 'index 1:array:num:3, 4'</span>
-<span id="L438" class="LineNr">438 </span>
-<span id="L439" class="LineNr">439 </span><span class="Delimiter">:(scenario index_out_of_bounds_2)</span>
-<span id="L440" class="LineNr">440 </span><span class="Special">% Hide_errors = true;</span>
-<span id="L441" class="LineNr">441 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L442" class="LineNr">442 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L443" class="LineNr">443 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L444" class="LineNr">444 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L445" class="LineNr">445 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L446" class="LineNr">446 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L447" class="LineNr">447 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L448" class="LineNr">448 </span>  <span class="Constant">7</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L449" class="LineNr">449 </span>  index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> -<span class="Constant">1</span>
-<span id="L450" class="LineNr">450 </span>]
-<span id="L451" class="LineNr">451 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index -1 in 'index 1:array:point, -1'</span>
-<span id="L452" class="LineNr">452 </span>
-<span id="L453" class="LineNr">453 </span><span class="Delimiter">:(scenario index_product_type_mismatch)</span>
-<span id="L454" class="LineNr">454 </span><span class="Special">% Hide_errors = true;</span>
-<span id="L455" class="LineNr">455 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L456" class="LineNr">456 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L457" class="LineNr">457 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L458" class="LineNr">458 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L459" class="LineNr">459 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L460" class="LineNr">460 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L461" class="LineNr">461 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L462" class="LineNr">462 </span>  <span class="Constant">7</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L463" class="LineNr">463 </span>  <span class="Constant">9</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> <span class="Constant">0</span>
-<span id="L464" class="LineNr">464 </span>]
-<span id="L465" class="LineNr">465 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: 'index' on '1:array:point' can't be saved in '9:num'; type should be 'point'</span>
-<span id="L466" class="LineNr">466 </span>
-<span id="L467" class="LineNr">467 </span><span class="Comment">//: we might want to call 'index' without saving the results, say in a sandbox</span>
-<span id="L468" class="LineNr">468 </span>
-<span id="L469" class="LineNr">469 </span><span class="Delimiter">:(scenario index_without_product)</span>
-<span id="L470" class="LineNr">470 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L471" class="LineNr">471 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L472" class="LineNr">472 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L473" class="LineNr">473 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L474" class="LineNr">474 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L475" class="LineNr">475 </span>  index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span>
-<span id="L476" class="LineNr">476 </span>]
-<span id="L477" class="LineNr">477 </span><span class="Comment"># just don't die</span>
-<span id="L478" class="LineNr">478 </span>
-<span id="L479" class="LineNr">479 </span><span class="SalientComment">//:: To write to elements of arrays, use 'put'.</span>
-<span id="L480" class="LineNr">480 </span>
-<span id="L481" class="LineNr">481 </span><span class="Delimiter">:(scenario put_index)</span>
-<span id="L482" class="LineNr">482 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L483" class="LineNr">483 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L484" class="LineNr">484 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L485" class="LineNr">485 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L486" class="LineNr">486 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L487" class="LineNr">487 </span>  <span class="Constant">1</span>:array:num<span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:num<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">34</span>
-<span id="L488" class="LineNr">488 </span>]
-<span id="L489" class="LineNr">489 </span><span class="traceContains">+mem: storing 34 in location 3</span>
-<span id="L490" class="LineNr">490 </span>
-<span id="L491" class="LineNr">491 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
-<span id="L492" class="LineNr">492 </span>PUT_INDEX<span class="Delimiter">,</span>
-<span id="L493" class="LineNr">493 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
-<span id="L494" class="LineNr">494 </span><a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;put-index&quot;</span><span class="Delimiter">,</span> PUT_INDEX<span class="Delimiter">);</span>
-<span id="L495" class="LineNr">495 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
-<span id="L496" class="LineNr">496 </span><span class="Normal">case</span> PUT_INDEX: <span class="Delimiter">{</span>
-<span id="L497" class="LineNr">497 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">3</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L498" class="LineNr">498 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put-index' expects exactly 3 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L499" class="LineNr">499 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L500" class="LineNr">500 </span>  <span class="Delimiter">}</span>
-<span id="L501" class="LineNr">501 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L502" class="LineNr">502 </span>  <span class="Comment">// Update PUT_INDEX base in Check</span>
-<span id="L503" class="LineNr">503 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_array<span class="Delimiter">(</span>base<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L504" class="LineNr">504 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put-index' on a non-array '&quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L505" class="LineNr">505 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L506" class="LineNr">506 </span>  <span class="Delimiter">}</span>
-<span id="L507" class="LineNr">507 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
-<span id="L508" class="LineNr">508 </span>  <span class="Comment">// Update PUT_INDEX index in Check</span>
-<span id="L509" class="LineNr">509 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>index<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L510" class="LineNr">510 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;second ingredient of 'put-index' should have type 'number', but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L511" class="LineNr">511 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L512" class="LineNr">512 </span>  <span class="Delimiter">}</span>
-<span id="L513" class="LineNr">513 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> value = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">);</span>
-<span id="L514" class="LineNr">514 </span>  <span class="Comment">// Update PUT_INDEX value in Check</span>
-<span id="L515" class="LineNr">515 </span>  reagent<span class="Comment">/*</span><span class="Comment">local</span><span class="Comment">*/</span> element<span class="Delimiter">;</span>
-<span id="L516" class="LineNr">516 </span>  element<span class="Delimiter">.</span>type = <a href='032array.cc.html#L366'>copy_array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
-<span id="L517" class="LineNr">517 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>element<span class="Delimiter">,</span> value<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L518" class="LineNr">518 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put-index &quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;, &quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;' should store &quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; but '&quot;</span> &lt;&lt; value<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;' has type &quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>value<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L519" class="LineNr">519 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L520" class="LineNr">520 </span>  <span class="Delimiter">}</span>
-<span id="L521" class="LineNr">521 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// no more checks necessary</span>
-<span id="L522" class="LineNr">522 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name != inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L523" class="LineNr">523 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product of 'put-index' must be first ingredient '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;', but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L524" class="LineNr">524 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L525" class="LineNr">525 </span>  <span class="Delimiter">}</span>
-<span id="L526" class="LineNr">526 </span>  <span class="Comment">// End PUT_INDEX Product Checks</span>
-<span id="L527" class="LineNr">527 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L528" class="LineNr">528 </span><span class="Delimiter">}</span>
-<span id="L529" class="LineNr">529 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
-<span id="L530" class="LineNr">530 </span><span class="Normal">case</span> PUT_INDEX: <span class="Delimiter">{</span>
-<span id="L531" class="LineNr">531 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L532" class="LineNr">532 </span>  <span class="Comment">// Update PUT_INDEX base in Run</span>
-<span id="L533" class="LineNr">533 </span>  <span class="Normal">int</span> base_address = base<span class="Delimiter">.</span>value<span class="Delimiter">;</span>
-<span id="L534" class="LineNr">534 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>base_address == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L535" class="LineNr">535 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;tried to access location 0 in '&quot;</span> &lt;&lt; current_instruction<span class="Delimiter">().</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L536" class="LineNr">536 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L537" class="LineNr">537 </span>  <span class="Delimiter">}</span>
-<span id="L538" class="LineNr">538 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
-<span id="L539" class="LineNr">539 </span>  <span class="Comment">// Update PUT_INDEX index in Run</span>
-<span id="L540" class="LineNr">540 </span>  vector&lt;<span class="Normal">double</span>&gt; index_val<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>index<span class="Delimiter">));</span>
-<span id="L541" class="LineNr">541 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &lt; <span class="Constant">0</span> || index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &gt;= <a href='001help.cc.html#L225'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L542" class="LineNr">542 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;invalid index &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; in '&quot;</span> &lt;&lt; current_instruction<span class="Delimiter">().</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L543" class="LineNr">543 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L544" class="LineNr">544 </span>  <span class="Delimiter">}</span>
-<span id="L545" class="LineNr">545 </span>  <span class="Normal">int</span> <a href='043space.cc.html#L76'>address</a> = base_address + <span class="Comment">/*</span><span class="Comment">skip length</span><span class="Comment">*/</span><span class="Constant">1</span> + index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span>*size_of<span class="Delimiter">(</span><a href='032array.cc.html#L370'>array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
-<span id="L546" class="LineNr">546 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;address to copy to is &quot;</span> &lt;&lt; <a href='043space.cc.html#L76'>address</a> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L547" class="LineNr">547 </span>  <span class="Comment">// optimization: directly write the element rather than updating 'product'</span>
-<span id="L548" class="LineNr">548 </span>  <span class="Comment">// and writing the entire array</span>
-<span id="L549" class="LineNr">549 </span>  vector&lt;<span class="Normal">double</span>&gt; value = read_memory<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">));</span>
-<span id="L550" class="LineNr">550 </span>  <span class="Comment">// Write Memory in PUT_INDEX in Run</span>
-<span id="L551" class="LineNr">551 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>value<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L552" class="LineNr">552 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>value<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; address+i &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L553" class="LineNr">553 </span>  <span class="Conceal">¦</span> <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> address+i<span class="Delimiter">,</span> value<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
-<span id="L554" class="LineNr">554 </span>  <span class="Delimiter">}</span>
-<span id="L555" class="LineNr">555 </span>  <span class="Identifier">goto</span> finish_instruction<span class="Delimiter">;</span>
-<span id="L556" class="LineNr">556 </span><span class="Delimiter">}</span>
-<span id="L557" class="LineNr">557 </span>
-<span id="L558" class="LineNr">558 </span><span class="Delimiter">:(scenario put_index_out_of_bounds)</span>
-<span id="L559" class="LineNr">559 </span><span class="Special">% Hide_errors = true;</span>
-<span id="L560" class="LineNr">560 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L561" class="LineNr">561 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L562" class="LineNr">562 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L563" class="LineNr">563 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L564" class="LineNr">564 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L565" class="LineNr">565 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L566" class="LineNr">566 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L567" class="LineNr">567 </span>  <span class="Constant">7</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L568" class="LineNr">568 </span>  <span class="Constant">8</span>:point<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
-<span id="L569" class="LineNr">569 </span>  <span class="Constant">1</span>:array:point<span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">,</span> <span class="Constant">8</span>:point  <span class="Comment"># '4' is less than size of array in locations, but larger than its length in elements</span>
-<span id="L570" class="LineNr">570 </span>]
-<span id="L571" class="LineNr">571 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index 4 in '1:array:point &lt;- put-index 1:array:point, 4, 8:point'</span>
-<span id="L572" class="LineNr">572 </span>
-<span id="L573" class="LineNr">573 </span><span class="Delimiter">:(scenario put_index_out_of_bounds_2)</span>
-<span id="L574" class="LineNr">574 </span><span class="Special">% Hide_errors = true;</span>
-<span id="L575" class="LineNr">575 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L576" class="LineNr">576 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L577" class="LineNr">577 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L578" class="LineNr">578 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L579" class="LineNr">579 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L580" class="LineNr">580 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L581" class="LineNr">581 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L582" class="LineNr">582 </span>  <span class="Constant">7</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L583" class="LineNr">583 </span>  <span class="Constant">8</span>:point<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
-<span id="L584" class="LineNr">584 </span>  <span class="Constant">1</span>:array:point<span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> -<span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">8</span>:point
-<span id="L585" class="LineNr">585 </span>]
-<span id="L586" class="LineNr">586 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index -1 in '1:array:point &lt;- put-index 1:array:point, -1, 8:point'</span>
-<span id="L587" class="LineNr">587 </span>
-<span id="L588" class="LineNr">588 </span><span class="Delimiter">:(scenario put_index_product_error)</span>
-<span id="L589" class="LineNr">589 </span><span class="Special">% Hide_errors = true;</span>
-<span id="L590" class="LineNr">590 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L591" class="LineNr">591 </span>  local-scope
-<span id="L592" class="LineNr">592 </span>  load-ingredients
-<span id="L593" class="LineNr">593 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L594" class="LineNr">594 </span>  <span class="Constant">4</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">34</span>
-<span id="L595" class="LineNr">595 </span>]
-<span id="L596" class="LineNr">596 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: product of 'put-index' must be first ingredient '1:array:num:3', but got '4:array:num:3'</span>
-<span id="L597" class="LineNr">597 </span>
-<span id="L598" class="LineNr">598 </span><span class="SalientComment">//:: compute the length of an array</span>
-<span id="L599" class="LineNr">599 </span>
-<span id="L600" class="LineNr">600 </span><span class="Delimiter">:(scenario array_length)</span>
+<span id="L425" class="LineNr">425 </span><span class="Delimiter">:(scenario index_truncates)</span>
+<span id="L426" class="LineNr">426 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L427" class="LineNr">427 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L428" class="LineNr">428 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L429" class="LineNr">429 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L430" class="LineNr">430 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L431" class="LineNr">431 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">1.5</span>  <span class="Comment"># non-whole number</span>
+<span id="L432" class="LineNr">432 </span>]
+<span id="L433" class="LineNr">433 </span><span class="Comment"># fraction is truncated away</span>
+<span id="L434" class="LineNr">434 </span><span class="traceContains">+mem: storing 15 in location 5</span>
+<span id="L435" class="LineNr">435 </span>
+<span id="L436" class="LineNr">436 </span><span class="Delimiter">:(scenario index_out_of_bounds)</span>
+<span id="L437" class="LineNr">437 </span><span class="Special">% Hide_errors = true;</span>
+<span id="L438" class="LineNr">438 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L439" class="LineNr">439 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L440" class="LineNr">440 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L441" class="LineNr">441 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L442" class="LineNr">442 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L443" class="LineNr">443 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L444" class="LineNr">444 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L445" class="LineNr">445 </span>  <span class="Constant">7</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L446" class="LineNr">446 </span>  index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">4</span>  <span class="Comment"># less than size of array in locations, but larger than its length in elements</span>
+<span id="L447" class="LineNr">447 </span>]
+<span id="L448" class="LineNr">448 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index 4 in 'index 1:array:num:3, 4'</span>
+<span id="L449" class="LineNr">449 </span>
+<span id="L450" class="LineNr">450 </span><span class="Delimiter">:(scenario index_out_of_bounds_2)</span>
+<span id="L451" class="LineNr">451 </span><span class="Special">% Hide_errors = true;</span>
+<span id="L452" class="LineNr">452 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L453" class="LineNr">453 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L454" class="LineNr">454 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L455" class="LineNr">455 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L456" class="LineNr">456 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L457" class="LineNr">457 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L458" class="LineNr">458 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L459" class="LineNr">459 </span>  <span class="Constant">7</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L460" class="LineNr">460 </span>  index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> -<span class="Constant">1</span>
+<span id="L461" class="LineNr">461 </span>]
+<span id="L462" class="LineNr">462 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index -1 in 'index 1:array:point, -1'</span>
+<span id="L463" class="LineNr">463 </span>
+<span id="L464" class="LineNr">464 </span><span class="Delimiter">:(scenario index_product_type_mismatch)</span>
+<span id="L465" class="LineNr">465 </span><span class="Special">% Hide_errors = true;</span>
+<span id="L466" class="LineNr">466 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L467" class="LineNr">467 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L468" class="LineNr">468 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L469" class="LineNr">469 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L470" class="LineNr">470 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L471" class="LineNr">471 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L472" class="LineNr">472 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L473" class="LineNr">473 </span>  <span class="Constant">7</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L474" class="LineNr">474 </span>  <span class="Constant">9</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> <span class="Constant">0</span>
+<span id="L475" class="LineNr">475 </span>]
+<span id="L476" class="LineNr">476 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: 'index' on '1:array:point' can't be saved in '9:num'; type should be 'point'</span>
+<span id="L477" class="LineNr">477 </span>
+<span id="L478" class="LineNr">478 </span><span class="Comment">//: we might want to call 'index' without saving the results, say in a sandbox</span>
+<span id="L479" class="LineNr">479 </span>
+<span id="L480" class="LineNr">480 </span><span class="Delimiter">:(scenario index_without_product)</span>
+<span id="L481" class="LineNr">481 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L482" class="LineNr">482 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L483" class="LineNr">483 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L484" class="LineNr">484 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L485" class="LineNr">485 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L486" class="LineNr">486 </span>  index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span>
+<span id="L487" class="LineNr">487 </span>]
+<span id="L488" class="LineNr">488 </span><span class="Comment"># just don't die</span>
+<span id="L489" class="LineNr">489 </span>
+<span id="L490" class="LineNr">490 </span><span class="SalientComment">//:: To write to elements of arrays, use 'put'.</span>
+<span id="L491" class="LineNr">491 </span>
+<span id="L492" class="LineNr">492 </span><span class="Delimiter">:(scenario put_index)</span>
+<span id="L493" class="LineNr">493 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L494" class="LineNr">494 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L495" class="LineNr">495 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L496" class="LineNr">496 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L497" class="LineNr">497 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L498" class="LineNr">498 </span>  <span class="Constant">1</span>:array:num<span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:num<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">34</span>
+<span id="L499" class="LineNr">499 </span>]
+<span id="L500" class="LineNr">500 </span><span class="traceContains">+mem: storing 34 in location 3</span>
+<span id="L501" class="LineNr">501 </span>
+<span id="L502" class="LineNr">502 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
+<span id="L503" class="LineNr">503 </span>PUT_INDEX<span class="Delimiter">,</span>
+<span id="L504" class="LineNr">504 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
+<span id="L505" class="LineNr">505 </span><a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;put-index&quot;</span><span class="Delimiter">,</span> PUT_INDEX<span class="Delimiter">);</span>
+<span id="L506" class="LineNr">506 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
+<span id="L507" class="LineNr">507 </span><span class="Normal">case</span> PUT_INDEX: <span class="Delimiter">{</span>
+<span id="L508" class="LineNr">508 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">3</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L509" class="LineNr">509 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put-index' expects exactly 3 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L510" class="LineNr">510 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L511" class="LineNr">511 </span>  <span class="Delimiter">}</span>
+<span id="L512" class="LineNr">512 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L513" class="LineNr">513 </span>  <span class="Comment">// Update PUT_INDEX base in Check</span>
+<span id="L514" class="LineNr">514 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_array<span class="Delimiter">(</span>base<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L515" class="LineNr">515 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put-index' on a non-array '&quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L516" class="LineNr">516 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L517" class="LineNr">517 </span>  <span class="Delimiter">}</span>
+<span id="L518" class="LineNr">518 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
+<span id="L519" class="LineNr">519 </span>  <span class="Comment">// Update PUT_INDEX index in Check</span>
+<span id="L520" class="LineNr">520 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>index<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L521" class="LineNr">521 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;second ingredient of 'put-index' should have type 'number', but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L522" class="LineNr">522 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L523" class="LineNr">523 </span>  <span class="Delimiter">}</span>
+<span id="L524" class="LineNr">524 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> value = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">);</span>
+<span id="L525" class="LineNr">525 </span>  <span class="Comment">// Update PUT_INDEX value in Check</span>
+<span id="L526" class="LineNr">526 </span>  reagent<span class="Comment">/*</span><span class="Comment">local</span><span class="Comment">*/</span> element<span class="Delimiter">;</span>
+<span id="L527" class="LineNr">527 </span>  element<span class="Delimiter">.</span>type = <a href='032array.cc.html#L377'>copy_array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
+<span id="L528" class="LineNr">528 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>element<span class="Delimiter">,</span> value<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L529" class="LineNr">529 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put-index &quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;, &quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;' should store &quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; but '&quot;</span> &lt;&lt; value<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;' has type &quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>value<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L530" class="LineNr">530 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L531" class="LineNr">531 </span>  <span class="Delimiter">}</span>
+<span id="L532" class="LineNr">532 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// no more checks necessary</span>
+<span id="L533" class="LineNr">533 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name != inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L534" class="LineNr">534 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product of 'put-index' must be first ingredient '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;', but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L535" class="LineNr">535 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L536" class="LineNr">536 </span>  <span class="Delimiter">}</span>
+<span id="L537" class="LineNr">537 </span>  <span class="Comment">// End PUT_INDEX Product Checks</span>
+<span id="L538" class="LineNr">538 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L539" class="LineNr">539 </span><span class="Delimiter">}</span>
+<span id="L540" class="LineNr">540 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
+<span id="L541" class="LineNr">541 </span><span class="Normal">case</span> PUT_INDEX: <span class="Delimiter">{</span>
+<span id="L542" class="LineNr">542 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L543" class="LineNr">543 </span>  <span class="Comment">// Update PUT_INDEX base in Run</span>
+<span id="L544" class="LineNr">544 </span>  <span class="Normal">int</span> base_address = base<span class="Delimiter">.</span>value<span class="Delimiter">;</span>
+<span id="L545" class="LineNr">545 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>base_address == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L546" class="LineNr">546 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;tried to access location 0 in '&quot;</span> &lt;&lt; current_instruction<span class="Delimiter">().</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L547" class="LineNr">547 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L548" class="LineNr">548 </span>  <span class="Delimiter">}</span>
+<span id="L549" class="LineNr">549 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
+<span id="L550" class="LineNr">550 </span>  <span class="Comment">// Update PUT_INDEX index in Run</span>
+<span id="L551" class="LineNr">551 </span>  vector&lt;<span class="Normal">double</span>&gt; index_val<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>index<span class="Delimiter">));</span>
+<span id="L552" class="LineNr">552 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &lt; <span class="Constant">0</span> || index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &gt;= <a href='001help.cc.html#L225'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L553" class="LineNr">553 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;invalid index &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; in '&quot;</span> &lt;&lt; current_instruction<span class="Delimiter">().</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L554" class="LineNr">554 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L555" class="LineNr">555 </span>  <span class="Delimiter">}</span>
+<span id="L556" class="LineNr">556 </span>  <span class="Normal">int</span> <a href='043space.cc.html#L76'>address</a> = base_address + <span class="Comment">/*</span><span class="Comment">skip length</span><span class="Comment">*/</span><span class="Constant">1</span> + index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span>*size_of<span class="Delimiter">(</span><a href='032array.cc.html#L381'>array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
+<span id="L557" class="LineNr">557 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;address to copy to is &quot;</span> &lt;&lt; <a href='043space.cc.html#L76'>address</a> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L558" class="LineNr">558 </span>  <span class="Comment">// optimization: directly write the element rather than updating 'product'</span>
+<span id="L559" class="LineNr">559 </span>  <span class="Comment">// and writing the entire array</span>
+<span id="L560" class="LineNr">560 </span>  vector&lt;<span class="Normal">double</span>&gt; value = read_memory<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">));</span>
+<span id="L561" class="LineNr">561 </span>  <span class="Comment">// Write Memory in PUT_INDEX in Run</span>
+<span id="L562" class="LineNr">562 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>value<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L563" class="LineNr">563 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>value<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; address+i &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L564" class="LineNr">564 </span>  <span class="Conceal">¦</span> <a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> address+i<span class="Delimiter">,</span> value<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
+<span id="L565" class="LineNr">565 </span>  <span class="Delimiter">}</span>
+<span id="L566" class="LineNr">566 </span>  <span class="Identifier">goto</span> finish_instruction<span class="Delimiter">;</span>
+<span id="L567" class="LineNr">567 </span><span class="Delimiter">}</span>
+<span id="L568" class="LineNr">568 </span>
+<span id="L569" class="LineNr">569 </span><span class="Delimiter">:(scenario put_index_out_of_bounds)</span>
+<span id="L570" class="LineNr">570 </span><span class="Special">% Hide_errors = true;</span>
+<span id="L571" class="LineNr">571 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L572" class="LineNr">572 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L573" class="LineNr">573 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L574" class="LineNr">574 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L575" class="LineNr">575 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L576" class="LineNr">576 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L577" class="LineNr">577 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L578" class="LineNr">578 </span>  <span class="Constant">7</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L579" class="LineNr">579 </span>  <span class="Constant">8</span>:point<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
+<span id="L580" class="LineNr">580 </span>  <span class="Constant">1</span>:array:point<span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">,</span> <span class="Constant">8</span>:point  <span class="Comment"># '4' is less than size of array in locations, but larger than its length in elements</span>
+<span id="L581" class="LineNr">581 </span>]
+<span id="L582" class="LineNr">582 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index 4 in '1:array:point &lt;- put-index 1:array:point, 4, 8:point'</span>
+<span id="L583" class="LineNr">583 </span>
+<span id="L584" class="LineNr">584 </span><span class="Delimiter">:(scenario put_index_out_of_bounds_2)</span>
+<span id="L585" class="LineNr">585 </span><span class="Special">% Hide_errors = true;</span>
+<span id="L586" class="LineNr">586 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L587" class="LineNr">587 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L588" class="LineNr">588 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L589" class="LineNr">589 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L590" class="LineNr">590 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L591" class="LineNr">591 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L592" class="LineNr">592 </span>  <span class="Constant">6</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L593" class="LineNr">593 </span>  <span class="Constant">7</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L594" class="LineNr">594 </span>  <span class="Constant">8</span>:point<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
+<span id="L595" class="LineNr">595 </span>  <span class="Constant">1</span>:array:point<span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> -<span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">8</span>:point
+<span id="L596" class="LineNr">596 </span>]
+<span id="L597" class="LineNr">597 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index -1 in '1:array:point &lt;- put-index 1:array:point, -1, 8:point'</span>
+<span id="L598" class="LineNr">598 </span>
+<span id="L599" class="LineNr">599 </span><span class="Delimiter">:(scenario put_index_product_error)</span>
+<span id="L600" class="LineNr">600 </span><span class="Special">% Hide_errors = true;</span>
 <span id="L601" class="LineNr">601 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L602" class="LineNr">602 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
-<span id="L603" class="LineNr">603 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
-<span id="L604" class="LineNr">604 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
-<span id="L605" class="LineNr">605 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
-<span id="L606" class="LineNr">606 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>length <span class="Constant">1</span>:array:num:<span class="Constant">3</span>
-<span id="L607" class="LineNr">607 </span>]
-<span id="L608" class="LineNr">608 </span><span class="traceContains">+mem: storing 3 in location 5</span>
-<span id="L609" class="LineNr">609 </span>
-<span id="L610" class="LineNr">610 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
-<span id="L611" class="LineNr">611 </span>LENGTH<span class="Delimiter">,</span>
-<span id="L612" class="LineNr">612 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
-<span id="L613" class="LineNr">613 </span><a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;length&quot;</span><span class="Delimiter">,</span> LENGTH<span class="Delimiter">);</span>
-<span id="L614" class="LineNr">614 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
-<span id="L615" class="LineNr">615 </span><span class="Normal">case</span> LENGTH: <span class="Delimiter">{</span>
-<span id="L616" class="LineNr">616 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L617" class="LineNr">617 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'length' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L618" class="LineNr">618 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L619" class="LineNr">619 </span>  <span class="Delimiter">}</span>
-<span id="L620" class="LineNr">620 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> array = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L621" class="LineNr">621 </span>  <span class="Comment">// Update LENGTH array in Check</span>
-<span id="L622" class="LineNr">622 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_array<span class="Delimiter">(</span>array<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L623" class="LineNr">623 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <span class="Constant">&quot;tried to calculate length of non-array '&quot;</span> &lt;&lt; array<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L624" class="LineNr">624 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L625" class="LineNr">625 </span>  <span class="Delimiter">}</span>
-<span id="L626" class="LineNr">626 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L627" class="LineNr">627 </span><span class="Delimiter">}</span>
-<span id="L628" class="LineNr">628 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
-<span id="L629" class="LineNr">629 </span><span class="Normal">case</span> LENGTH: <span class="Delimiter">{</span>
-<span id="L630" class="LineNr">630 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> array = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L631" class="LineNr">631 </span>  <span class="Comment">// Update LENGTH array in Run</span>
-<span id="L632" class="LineNr">632 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>array<span class="Delimiter">.</span>value == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L633" class="LineNr">633 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;tried to access location 0 in '&quot;</span> &lt;&lt; current_instruction<span class="Delimiter">().</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
-<span id="L634" class="LineNr">634 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L635" class="LineNr">635 </span>  <span class="Delimiter">}</span>
-<span id="L636" class="LineNr">636 </span>  products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
-<span id="L637" class="LineNr">637 </span>  products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><a href='001help.cc.html#L225'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> array<span class="Delimiter">.</span>value<span class="Delimiter">));</span>
-<span id="L638" class="LineNr">638 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L639" class="LineNr">639 </span><span class="Delimiter">}</span>
-<span id="L640" class="LineNr">640 </span>
-<span id="L641" class="LineNr">641 </span><span class="Comment">//: optimization: none of the instructions in this layer use 'ingredients' so</span>
-<span id="L642" class="LineNr">642 </span><span class="Comment">//: stop copying potentially huge arrays into it.</span>
-<span id="L643" class="LineNr">643 </span><span class="Delimiter">:(before &quot;End should_copy_ingredients Special-cases&quot;)</span>
-<span id="L644" class="LineNr">644 </span><a href='010vm.cc.html#L14'>recipe_ordinal</a> r = current_instruction<span class="Delimiter">().</span>operation<span class="Delimiter">;</span>
-<span id="L645" class="LineNr">645 </span><span class="Normal">if</span> <span class="Delimiter">(</span>r == CREATE_ARRAY || r == INDEX || r == PUT_INDEX || r == LENGTH<span class="Delimiter">)</span>
-<span id="L646" class="LineNr">646 </span>  <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L602" class="LineNr">602 </span>  local-scope
+<span id="L603" class="LineNr">603 </span>  load-ingredients
+<span id="L604" class="LineNr">604 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L605" class="LineNr">605 </span>  <span class="Constant">4</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">34</span>
+<span id="L606" class="LineNr">606 </span>]
+<span id="L607" class="LineNr">607 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: product of 'put-index' must be first ingredient '1:array:num:3', but got '4:array:num:3'</span>
+<span id="L608" class="LineNr">608 </span>
+<span id="L609" class="LineNr">609 </span><span class="SalientComment">//:: compute the length of an array</span>
+<span id="L610" class="LineNr">610 </span>
+<span id="L611" class="LineNr">611 </span><span class="Delimiter">:(scenario array_length)</span>
+<span id="L612" class="LineNr">612 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L613" class="LineNr">613 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+<span id="L614" class="LineNr">614 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+<span id="L615" class="LineNr">615 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+<span id="L616" class="LineNr">616 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+<span id="L617" class="LineNr">617 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>length <span class="Constant">1</span>:array:num:<span class="Constant">3</span>
+<span id="L618" class="LineNr">618 </span>]
+<span id="L619" class="LineNr">619 </span><span class="traceContains">+mem: storing 3 in location 5</span>
+<span id="L620" class="LineNr">620 </span>
+<span id="L621" class="LineNr">621 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
+<span id="L622" class="LineNr">622 </span>LENGTH<span class="Delimiter">,</span>
+<span id="L623" class="LineNr">623 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
+<span id="L624" class="LineNr">624 </span><a href='001help.cc.html#L218'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;length&quot;</span><span class="Delimiter">,</span> LENGTH<span class="Delimiter">);</span>
+<span id="L625" class="LineNr">625 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
+<span id="L626" class="LineNr">626 </span><span class="Normal">case</span> LENGTH: <span class="Delimiter">{</span>
+<span id="L627" class="LineNr">627 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L628" class="LineNr">628 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'length' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L629" class="LineNr">629 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L630" class="LineNr">630 </span>  <span class="Delimiter">}</span>
+<span id="L631" class="LineNr">631 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> array = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L632" class="LineNr">632 </span>  <span class="Comment">// Update LENGTH array in Check</span>
+<span id="L633" class="LineNr">633 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_array<span class="Delimiter">(</span>array<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L634" class="LineNr">634 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <span class="Constant">&quot;tried to calculate length of non-array '&quot;</span> &lt;&lt; array<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L635" class="LineNr">635 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L636" class="LineNr">636 </span>  <span class="Delimiter">}</span>
+<span id="L637" class="LineNr">637 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L638" class="LineNr">638 </span><span class="Delimiter">}</span>
+<span id="L639" class="LineNr">639 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
+<span id="L640" class="LineNr">640 </span><span class="Normal">case</span> LENGTH: <span class="Delimiter">{</span>
+<span id="L641" class="LineNr">641 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> array = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L642" class="LineNr">642 </span>  <span class="Comment">// Update LENGTH array in Run</span>
+<span id="L643" class="LineNr">643 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>array<span class="Delimiter">.</span>value == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L644" class="LineNr">644 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;tried to access location 0 in '&quot;</span> &lt;&lt; current_instruction<span class="Delimiter">().</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L185'>end</a><span class="Delimiter">();</span>
+<span id="L645" class="LineNr">645 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L646" class="LineNr">646 </span>  <span class="Delimiter">}</span>
+<span id="L647" class="LineNr">647 </span>  products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
+<span id="L648" class="LineNr">648 </span>  products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><a href='001help.cc.html#L225'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> array<span class="Delimiter">.</span>value<span class="Delimiter">));</span>
+<span id="L649" class="LineNr">649 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L650" class="LineNr">650 </span><span class="Delimiter">}</span>
+<span id="L651" class="LineNr">651 </span>
+<span id="L652" class="LineNr">652 </span><span class="Comment">//: optimization: none of the instructions in this layer use 'ingredients' so</span>
+<span id="L653" class="LineNr">653 </span><span class="Comment">//: stop copying potentially huge arrays into it.</span>
+<span id="L654" class="LineNr">654 </span><span class="Delimiter">:(before &quot;End should_copy_ingredients Special-cases&quot;)</span>
+<span id="L655" class="LineNr">655 </span><a href='010vm.cc.html#L14'>recipe_ordinal</a> r = current_instruction<span class="Delimiter">().</span>operation<span class="Delimiter">;</span>
+<span id="L656" class="LineNr">656 </span><span class="Normal">if</span> <span class="Delimiter">(</span>r == CREATE_ARRAY || r == INDEX || r == PUT_INDEX || r == LENGTH<span class="Delimiter">)</span>
+<span id="L657" class="LineNr">657 </span>  <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
 </pre>
 </body>
 </html>