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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<title>Mu - 070table.mu</title>
+<meta name="Generator" content="Vim/7.4">
+<meta name="plugin-version" content="vim7.4_v2">
+<meta name="syntax" content="none">
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+<!--
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+body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; }
+* { font-size: 12pt; font-size: 1em; }
+.muScenario { color: #00af00; }
+.muData { color: #ffff00; }
+.Delimiter { color: #800080; }
+.muRecipe { color: #ff8700; }
+.Comment { color: #9090ff; }
+.Constant { color: #00a0a0; }
+.Special { color: #c00000; }
+.muControl { color: #c0a020; }
+-->
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+
+<script type='text/javascript'>
+<!--
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+</script>
+</head>
+<body>
+<pre id='vimCodeElement'>
+<span class="Comment"># A table is like an array, except that its keys are not integers but</span>
+<span class="Comment"># arbitrary types.</span>
+
+<span class="muScenario">scenario</span> table-read-write [
+  run [
+    <span class="Constant">local-scope</span>
+    tab:address:table:number:number<span class="Special"> &lt;- </span>new-table <span class="Constant">30</span>
+    put-index tab, <span class="Constant">12</span>, <span class="Constant">34</span>
+    <span class="Constant">1</span>:number/<span class="Special">raw &lt;- </span>index tab, <span class="Constant">12</span>
+  ]
+  memory-should-contain [
+    <span class="Constant">1</span><span class="Special"> &lt;- </span><span class="Constant">34</span>
+  ]
+]
+
+<span class="muScenario">scenario</span> table-read-write-non-integer [
+  run [
+    <span class="Constant">local-scope</span>
+    key:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[abc def]</span>
+    <span class="Delimiter">{</span>tab: (address table (address array character) number)<span class="Delimiter">}</span><span class="Special"> &lt;- </span>new-table <span class="Constant">30</span>
+    put-index tab, key, <span class="Constant">34</span>
+    <span class="Constant">1</span>:number/<span class="Special">raw &lt;- </span>index tab, key
+  ]
+  memory-should-contain [
+    <span class="Constant">1</span><span class="Special"> &lt;- </span><span class="Constant">34</span>
+  ]
+]
+
+<span class="muData">container</span> table:_key:_value [
+  length:number
+  capacity:number
+  data:address:array:table_row:_key:_value
+]
+
+<span class="muData">container</span> table_row:_key:_value [
+  occupied?:boolean
+  key:_key
+  value:_value
+]
+
+<span class="muRecipe">def</span> new-table capacity:number<span class="muRecipe"> -&gt; </span>result:address:table:_key:_value [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  result<span class="Special"> &lt;- </span>new <span class="Delimiter">{</span>(table _key _value): type<span class="Delimiter">}</span>
+  data:address:array:table_row:_key:_value<span class="Special"> &lt;- </span>new <span class="Delimiter">{</span>(table_row _key _value): type<span class="Delimiter">}</span>, capacity
+  *result<span class="Special"> &lt;- </span>merge <span class="Constant">0/length</span>, capacity, data
+]
+
+<span class="muRecipe">def</span> put-index table:address:table:_key:_value, key:_key, value:_value<span class="muRecipe"> -&gt; </span>table:address:table:_key:_value [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  hash:number<span class="Special"> &lt;- </span>hash key
+  hash<span class="Special"> &lt;- </span>abs hash
+  capacity:number<span class="Special"> &lt;- </span>get *table, <span class="Constant">capacity:offset</span>
+  _, hash<span class="Special"> &lt;- </span>divide-with-remainder hash, capacity
+  hash<span class="Special"> &lt;- </span>abs hash  <span class="Comment"># in case hash overflows into a negative integer</span>
+  table-data:address:array:table_row:_key:_value<span class="Special"> &lt;- </span>get *table, <span class="Constant">data:offset</span>
+  x:table_row:_key:_value<span class="Special"> &lt;- </span>index *table-data, hash
+  occupied?:boolean<span class="Special"> &lt;- </span>get x, <span class="Constant">occupied?:offset</span>
+  not-occupied?:boolean<span class="Special"> &lt;- </span>not occupied?:boolean
+  assert not-occupied?, <span class="Constant">[can't handle collisions yet]</span>
+  new-row:table_row:_key:_value<span class="Special"> &lt;- </span>merge <span class="Constant">1/true</span>, key, value
+  *table-data<span class="Special"> &lt;- </span>put-index *table-data, hash, new-row
+]
+
+<span class="muRecipe">def</span> abs n:number<span class="muRecipe"> -&gt; </span>result:number [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  positive?:boolean<span class="Special"> &lt;- </span>greater-or-equal n, <span class="Constant">0</span>
+  <span class="muControl">return-if</span> positive?, n
+  result<span class="Special"> &lt;- </span>multiply n, <span class="Constant">-1</span>
+]
+
+<span class="muRecipe">def</span> index table:address:table:_key:_value, key:_key<span class="muRecipe"> -&gt; </span>result:_value [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  hash:number<span class="Special"> &lt;- </span>hash key
+  hash<span class="Special"> &lt;- </span>abs hash
+  capacity:number<span class="Special"> &lt;- </span>get *table, <span class="Constant">capacity:offset</span>
+  _, hash<span class="Special"> &lt;- </span>divide-with-remainder hash, capacity
+  hash<span class="Special"> &lt;- </span>abs hash  <span class="Comment"># in case hash overflows into a negative integer</span>
+  table-data:address:array:table_row:_key:_value<span class="Special"> &lt;- </span>get *table, <span class="Constant">data:offset</span>
+  x:table_row:_key:_value<span class="Special"> &lt;- </span>index *table-data, hash
+  occupied?:boolean<span class="Special"> &lt;- </span>get x, <span class="Constant">occupied?:offset</span>
+  assert occupied?, <span class="Constant">[can't handle missing elements yet]</span>
+  result<span class="Special"> &lt;- </span>get x, <span class="Constant">value:offset</span>
+]
+</pre>
+</body>
+</html>
+<!-- vim: set foldmethod=manual : -->