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<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Example program showing how multiple functions with the same name can</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment"># coexist, and how we select between them.</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">#</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment"># Expected output:</span>
<pre { line-height: 125%; }
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<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Primitive to convert any type to text (array of characters).</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: Later layers will allow us to override this to do something smarter for</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: specific types.</span>
<span id="L4" class="LineNr"> 4 </span>
<span id="L5" class="LineNr"> 5 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L6" class="LineNr"> 6 </span>TO_TEXT<span class="Delimiter">,</span>
<span id="L7" class="LineNr"> 7 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L8" class="LineNr"> 8 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"to-text"</span><span class="Delimiter">,</span> TO_TEXT<span class="Delimiter">);</span>
<span id="L9" class="LineNr"> 9 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L10" class="LineNr">10 </span><span class="Normal">case</span> TO_TEXT: <span class="Delimiter">{</span>
<span id="L11" class="LineNr">11 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>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="L12" class="LineNr">12 </span> <a href='003trace.cc.html#L196'>raise</a> << <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> << <span class="Constant">"'to-text' requires a single ingredient, but got '"</span> << to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L13" class="LineNr">13 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L14" class="LineNr">14 </span> <span class="Delimiter">}</span>
<span id="L15" class="LineNr">15 </span> <span class="Comment">// can handle any type</span>
<span id="L16" class="LineNr">16 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L17" class="LineNr">17 </span><span class="Delimiter">}</span>
<span id="L18" class="LineNr">18 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L19" class="LineNr">19 </span><span class="Normal">case</span> TO_TEXT: <span class="Delimiter">{</span>
<span id="L20" class="LineNr">20 </span> products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L21" class="LineNr">21 </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><span class="Comment">/*</span><span class="Comment">alloc id</span><span class="Comment">*/</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L22" class="LineNr">22 </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='038new_text.cc.html#L39'>new_mu_text</a><span class="Delimiter">(</span>inspect<span class="Delimiter">(</span><a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><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="L23" class="LineNr">23 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L24" class="LineNr">24 </span><span class="Delimiter">}</span>
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