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<span class="Comment"># example program: maintain multiple counters with isolated lexical scopes</span>
<span class="Comment"># (spaces)</span>
<span class="muRecipe">recipe</span> new-counter [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new <span class="Constant">location:type</span>, <span class="Constant">30</span>
n:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="muControl">reply</span> <span class="Constant">default-space</span>
]
<span class="muRecipe">recipe</span> increment-counter [
<span class="Constant">local-scope</span>
<span class="Constant">0</span>:address:array:location/names:new-counter<span class="Special"> <- </span><span class="Constant">next-ingredient</span> <span class="Comment"># setup outer space; it *must* come from 'new-counter'</span>
x:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
n:number/space:<span class="Constant">1</span><span class="Special"> <- </span>add n:number/space:<span class="Constant">1</span>, x
<span class="muControl">reply</span> n:number/space:<span class="Constant">1</span>
]
<span class="muRecipe">recipe</span> main [
<span class="Constant">local-scope</span>
<span class="Comment"># counter A</span>
a:address:array:location<span class="Special"> <- </span>new-counter <span class="Constant">34</span>
<span class="Comment"># counter B</span>
b:address:array:location<span class="Special"> <- </span>new-counter <span class="Constant">23</span>
<span class="Comment"># increment both by 2 but in different ways</span>
increment-counter a, <span class="Constant">1</span>
b-value:number<span class="Special"> <- </span>increment-counter b, <span class="Constant">2</span>
a-value:number<span class="Special"> <- </span>increment-counter a, <span class="Constant">1</span>
<span class="Comment"># check results</span>
$print <span class="Constant">[Contents of counters</span>
<span class="Constant">]</span>
<span class="Comment"># trailing space in next line is to help with syntax highlighting</span>
$print <span class="Constant">[a: ]</span>, a-value, <span class="Constant">[ b: ]</span>, b-value, <span class="Constant">[ </span>
<span class="Constant">]</span>
]
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