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<title>Mu - 062array.mu</title>
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<pre id='vimCodeElement'>
<span class="muScenario">scenario</span> array-from-args [
  run [
    1:address:array:location<span class="Special"> &lt;- </span>new-array <span class="Constant">0:literal</span>, <span class="Constant">1:literal</span>, <span class="Constant">2:literal</span>
    2:array:location<span class="Special"> &lt;- </span>copy 1:address:array:location/deref
  ]
  memory-should-contain [
    2<span class="Special"> &lt;- </span>3  <span class="Comment"># array length</span>
    3<span class="Special"> &lt;- </span>0
    4<span class="Special"> &lt;- </span>1
    5<span class="Special"> &lt;- </span>2
  ]
]

<span class="Comment"># create an array out of a list of scalar args</span>
<span class="muRecipe">recipe</span> new-array [
  <span class="Constant">default-space</span>:address:array:location<span class="Special"> &lt;- </span>new location:type, <span class="Constant">30:literal</span>
  capacity:number<span class="Special"> &lt;- </span>copy <span class="Constant">0:literal</span>
  <span class="Delimiter">{</span>
    <span class="Comment"># while read curr-value</span>
    curr-value:location, exists?:boolean<span class="Special"> &lt;- </span><span class="Constant">next-ingredient</span>
    <span class="muControl">break-unless</span> exists?:boolean
    capacity:number<span class="Special"> &lt;- </span>add capacity:number, <span class="Constant">1:literal</span>
    <span class="muControl">loop</span>
  <span class="Delimiter">}</span>
  result:address:array:location<span class="Special"> &lt;- </span>new location:type, capacity:number
  rewind-ingredients
  i:number<span class="Special"> &lt;- </span>copy <span class="Constant">0:literal</span>
  <span class="Delimiter">{</span>
    <span class="Comment"># while read curr-value</span>
    done?:boolean<span class="Special"> &lt;- </span>greater-or-equal i:number, capacity:number
    <span class="muControl">break-if</span> done?:boolean
    curr-value:location, exists?:boolean<span class="Special"> &lt;- </span><span class="Constant">next-ingredient</span>
    assert exists?:boolean, <span class="Constant">[error in rewinding ingredients to new-array]</span>
    tmp:address:location<span class="Special"> &lt;- </span>index-address result:address:array:location/deref, i:number
    tmp:address:location/deref<span class="Special"> &lt;- </span>copy curr-value:location
    i:number<span class="Special"> &lt;- </span>add i:number, <span class="Constant">1:literal</span>
    <span class="muControl">loop</span>
  <span class="Delimiter">}</span>
  <span class="muControl">reply</span> result:address:array:location
]
</pre>
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