245 lines
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245 lines
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<a href='https://github.com/akkartik/mu/blob/master/063array.mu'>https://github.com/akkartik/mu/blob/master/063array.mu</a>
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<pre id='vimCodeElement'>
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<span id="L1" class="LineNr"> 1 </span><span class="muScenario">scenario</span> array-from-args [
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<span id="L2" class="LineNr"> 2 </span> run [
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<span id="L3" class="LineNr"> 3 </span> <span class="Constant">local-scope</span>
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<span id="L4" class="LineNr"> 4 </span> x:&:@:num <span class="Special"><-</span> <a href='063array.mu.html#L16'>new-array</a><span class="Constant"> 0</span>,<span class="Constant"> 1</span>,<span class="Constant"> 2</span>
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<span id="L5" class="LineNr"> 5 </span> 10:@:num/<span class="Special">raw</span> <span class="Special"><-</span> copy *x
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<span id="L6" class="LineNr"> 6 </span> ]
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<span id="L7" class="LineNr"> 7 </span> memory-should-contain [
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<span id="L8" class="LineNr"> 8 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 3</span> <span class="Comment"># array length</span>
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<span id="L9" class="LineNr"> 9 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 0</span>
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<span id="L10" class="LineNr"> 10 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 1</span>
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<span id="L11" class="LineNr"> 11 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 2</span>
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<span id="L12" class="LineNr"> 12 </span> ]
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<span id="L13" class="LineNr"> 13 </span>]
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<span id="L14" class="LineNr"> 14 </span>
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<span id="L15" class="LineNr"> 15 </span><span class="Comment"># create an array out of a list of args</span>
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<span id="L16" class="LineNr"> 16 </span><span class="muRecipe">def</span> <a href='063array.mu.html#L16'>new-array</a><span class="muRecipe"> -> </span>result:&:@:_elem [
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<span id="L17" class="LineNr"> 17 </span> <span class="Constant">local-scope</span>
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<span id="L18" class="LineNr"> 18 </span> <a href='075channel.mu.html#L391'>capacity</a>:num <span class="Special"><-</span> copy<span class="Constant"> 0</span>
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<span id="L19" class="LineNr"> 19 </span> <span class="Delimiter">{</span>
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<span id="L20" class="LineNr"> 20 </span> <span class="Comment"># while read curr-value</span>
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<span id="L21" class="LineNr"> 21 </span> curr-value:_elem, exists?:bool <span class="Special"><-</span> <span class="Constant">next-input</span>
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<span id="L22" class="LineNr"> 22 </span> <span class="muControl">break-unless</span> exists?
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<span id="L23" class="LineNr"> 23 </span> <a href='075channel.mu.html#L391'>capacity</a> <span class="Special"><-</span> add <a href='075channel.mu.html#L391'>capacity</a>,<span class="Constant"> 1</span>
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<span id="L24" class="LineNr"> 24 </span> <span class="muControl"> loop</span>
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<span id="L25" class="LineNr"> 25 </span> <span class="Delimiter">}</span>
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<span id="L26" class="LineNr"> 26 </span> result <span class="Special"><-</span> new <span class="Constant">_elem:type</span>, <a href='075channel.mu.html#L391'>capacity</a>
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<span id="L27" class="LineNr"> 27 </span> <span class="Constant">rewind-inputs</span>
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<span id="L28" class="LineNr"> 28 </span> i:num <span class="Special"><-</span> copy<span class="Constant"> 0</span>
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<span id="L29" class="LineNr"> 29 </span> <span class="Delimiter">{</span>
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<span id="L30" class="LineNr"> 30 </span> <span class="Comment"># while read curr-value</span>
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<span id="L31" class="LineNr"> 31 </span> done?:bool <span class="Special"><-</span> greater-or-equal i, <a href='075channel.mu.html#L391'>capacity</a>
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<span id="L32" class="LineNr"> 32 </span> <span class="muControl">break-if</span> done?
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<span id="L33" class="LineNr"> 33 </span> curr-value:_elem, exists?:bool <span class="Special"><-</span> <span class="Constant">next-input</span>
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<span id="L34" class="LineNr"> 34 </span> assert exists?, <span class="Constant">[error in rewinding inputs to new-array]</span>
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<span id="L35" class="LineNr"> 35 </span> *result <span class="Special"><-</span> put-index *result, i, curr-value
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<span id="L36" class="LineNr"> 36 </span> i <span class="Special"><-</span> add i,<span class="Constant"> 1</span>
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<span id="L37" class="LineNr"> 37 </span> <span class="muControl"> loop</span>
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<span id="L38" class="LineNr"> 38 </span> <span class="Delimiter">}</span>
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<span id="L39" class="LineNr"> 39 </span> <span class="muControl"> return</span> result
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<span id="L40" class="LineNr"> 40 </span>]
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<span id="L41" class="LineNr"> 41 </span>
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<span id="L42" class="LineNr"> 42 </span><span class="Comment"># fill an existing array with a set of numbers</span>
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<span id="L43" class="LineNr"> 43 </span><span class="Comment"># (contributed by Caleb Couch)</span>
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<span id="L44" class="LineNr"> 44 </span><span class="muRecipe">def</span> <a href='063array.mu.html#L44'>fill</a> array:&:@:num<span class="muRecipe"> -> </span>array:&:@:num [
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<span id="L45" class="LineNr"> 45 </span> <span class="Constant">local-scope</span>
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<span id="L46" class="LineNr"> 46 </span> <span class="Constant">load-inputs</span>
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<span id="L47" class="LineNr"> 47 </span> loopn:num <span class="Special"><-</span> copy<span class="Constant"> 0</span>
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<span id="L48" class="LineNr"> 48 </span> length:num <span class="Special"><-</span> length *array
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<span id="L49" class="LineNr"> 49 </span> <span class="Delimiter">{</span>
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<span id="L50" class="LineNr"> 50 </span> length?:bool <span class="Special"><-</span> equal loopn, length
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<span id="L51" class="LineNr"> 51 </span> <span class="muControl">break-if</span> length?
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<span id="L52" class="LineNr"> 52 </span> object:num, arg-received?:bool <span class="Special"><-</span> <span class="Constant">next-input</span>
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<span id="L53" class="LineNr"> 53 </span> <span class="muControl">break-unless</span> arg-received?
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<span id="L54" class="LineNr"> 54 </span> *array <span class="Special"><-</span> put-index *array, loopn, object
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<span id="L55" class="LineNr"> 55 </span> loopn <span class="Special"><-</span> add loopn,<span class="Constant"> 1</span>
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<span id="L56" class="LineNr"> 56 </span> <span class="muControl"> loop</span>
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<span id="L57" class="LineNr"> 57 </span> <span class="Delimiter">}</span>
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<span id="L58" class="LineNr"> 58 </span>]
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<span id="L59" class="LineNr"> 59 </span>
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<span id="L60" class="LineNr"> 60 </span><span class="muScenario">scenario</span> fill-on-an-empty-array [
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<span id="L61" class="LineNr"> 61 </span> <span class="Constant">local-scope</span>
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<span id="L62" class="LineNr"> 62 </span> array:&:@:num <span class="Special"><-</span> new <span class="Constant">number:type</span>,<span class="Constant"> 3</span>
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<span id="L63" class="LineNr"> 63 </span> run [
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<span id="L64" class="LineNr"> 64 </span> array <span class="Special"><-</span> <a href='063array.mu.html#L44'>fill</a> array,<span class="Constant"> 1 2 3</span>
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<span id="L65" class="LineNr"> 65 </span> 10:@:num/<span class="Special">raw</span> <span class="Special"><-</span> copy *array
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<span id="L66" class="LineNr"> 66 </span> ]
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<span id="L67" class="LineNr"> 67 </span> memory-should-contain [
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<span id="L68" class="LineNr"> 68 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 3</span>
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<span id="L69" class="LineNr"> 69 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span>
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<span id="L70" class="LineNr"> 70 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 2</span>
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<span id="L71" class="LineNr"> 71 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 3</span>
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<span id="L72" class="LineNr"> 72 </span> ]
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<span id="L73" class="LineNr"> 73 </span>]
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<span id="L74" class="LineNr"> 74 </span>
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<span id="L75" class="LineNr"> 75 </span><span class="muScenario">scenario</span> fill-overwrites-existing-values [
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<span id="L76" class="LineNr"> 76 </span> <span class="Constant">local-scope</span>
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<span id="L77" class="LineNr"> 77 </span> array:&:@:num <span class="Special"><-</span> new <span class="Constant">number:type</span>,<span class="Constant"> 3</span>
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<span id="L78" class="LineNr"> 78 </span> *array <span class="Special"><-</span> put-index *array,<span class="Constant"> 0</span>,<span class="Constant"> 4</span>
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<span id="L79" class="LineNr"> 79 </span> run [
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<span id="L80" class="LineNr"> 80 </span> array <span class="Special"><-</span> <a href='063array.mu.html#L44'>fill</a> array,<span class="Constant"> 1 2 3</span>
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<span id="L81" class="LineNr"> 81 </span> 10:@:num/<span class="Special">raw</span> <span class="Special"><-</span> copy *array
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<span id="L82" class="LineNr"> 82 </span> ]
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<span id="L83" class="LineNr"> 83 </span> memory-should-contain [
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<span id="L84" class="LineNr"> 84 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 3</span>
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<span id="L85" class="LineNr"> 85 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span>
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<span id="L86" class="LineNr"> 86 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 2</span>
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<span id="L87" class="LineNr"> 87 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 3</span>
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<span id="L88" class="LineNr"> 88 </span> ]
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<span id="L89" class="LineNr"> 89 </span>]
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<span id="L90" class="LineNr"> 90 </span>
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<span id="L91" class="LineNr"> 91 </span><span class="muScenario">scenario</span> fill-exits-gracefully-when-given-no-inputs [
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<span id="L92" class="LineNr"> 92 </span> <span class="Constant">local-scope</span>
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<span id="L93" class="LineNr"> 93 </span> array:&:@:num <span class="Special"><-</span> new <span class="Constant">number:type</span>,<span class="Constant"> 3</span>
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<span id="L94" class="LineNr"> 94 </span> run [
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<span id="L95" class="LineNr"> 95 </span> array <span class="Special"><-</span> <a href='063array.mu.html#L44'>fill</a> array
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<span id="L96" class="LineNr"> 96 </span> 10:@:num/<span class="Special">raw</span> <span class="Special"><-</span> copy *array
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<span id="L97" class="LineNr"> 97 </span> ]
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<span id="L98" class="LineNr"> 98 </span> memory-should-contain [
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<span id="L99" class="LineNr"> 99 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 3</span>
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<span id="L100" class="LineNr">100 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 0</span>
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<span id="L101" class="LineNr">101 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 0</span>
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<span id="L102" class="LineNr">102 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 0</span>
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<span id="L103" class="LineNr">103 </span> ]
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<span id="L104" class="LineNr">104 </span>]
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<span id="L105" class="LineNr">105 </span>
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<span id="L106" class="LineNr">106 </span><span class="Comment"># swap two elements of an array</span>
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<span id="L107" class="LineNr">107 </span><span class="Comment"># (contributed by Caleb Couch)</span>
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<span id="L108" class="LineNr">108 </span><span class="muRecipe">def</span> <a href='063array.mu.html#L108'>swap</a> array:&:@:num, index1:num, index2:num<span class="muRecipe"> -> </span>array:&:@:num [
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<span id="L109" class="LineNr">109 </span> <span class="Constant">local-scope</span>
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<span id="L110" class="LineNr">110 </span> <span class="Constant">load-inputs</span>
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<span id="L111" class="LineNr">111 </span> object1:num <span class="Special"><-</span> index *array, index1
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<span id="L112" class="LineNr">112 </span> object2:num <span class="Special"><-</span> index *array, index2
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<span id="L113" class="LineNr">113 </span> *array <span class="Special"><-</span> put-index *array, index1, object2
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<span id="L114" class="LineNr">114 </span> *array <span class="Special"><-</span> put-index *array, index2, object1
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<span id="L115" class="LineNr">115 </span>]
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<span id="L116" class="LineNr">116 </span>
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<span id="L117" class="LineNr">117 </span><span class="muScenario">scenario</span> swap-works [
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<span id="L118" class="LineNr">118 </span> <span class="Constant">local-scope</span>
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<span id="L119" class="LineNr">119 </span> array:&:@:num <span class="Special"><-</span> new <span class="Constant">number:type</span>,<span class="Constant"> 4</span>
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<span id="L120" class="LineNr">120 </span> array <span class="Special"><-</span> <a href='063array.mu.html#L44'>fill</a> array,<span class="Constant"> 4 3 2 1</span>
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<span id="L121" class="LineNr">121 </span> run [
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<span id="L122" class="LineNr">122 </span> array <span class="Special"><-</span> <a href='063array.mu.html#L108'>swap</a> array,<span class="Constant"> 0</span>,<span class="Constant"> 2</span>
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<span id="L123" class="LineNr">123 </span> 10:num/<span class="Special">raw</span> <span class="Special"><-</span> index *array,<span class="Constant"> 0</span>
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<span id="L124" class="LineNr">124 </span> 11:num/<span class="Special">raw</span> <span class="Special"><-</span> index *array,<span class="Constant"> 2</span>
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<span id="L125" class="LineNr">125 </span> ]
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<span id="L126" class="LineNr">126 </span> memory-should-contain [
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<span id="L127" class="LineNr">127 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 2</span>
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<span id="L128" class="LineNr">128 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 4</span>
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<span id="L129" class="LineNr">129 </span> ]
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<span id="L130" class="LineNr">130 </span>]
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<span id="L131" class="LineNr">131 </span>
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<span id="L132" class="LineNr">132 </span><span class="Comment"># reverse the elements of an array</span>
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<span id="L133" class="LineNr">133 </span><span class="Comment"># (contributed by Caleb Couch)</span>
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<span id="L134" class="LineNr">134 </span><span class="muRecipe">def</span> reverse array:&:@:_elem<span class="muRecipe"> -> </span>array:&:@:_elem [
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<span id="L135" class="LineNr">135 </span> <span class="Constant">local-scope</span>
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<span id="L136" class="LineNr">136 </span> <span class="Constant">load-inputs</span>
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<span id="L137" class="LineNr">137 </span> start:num <span class="Special"><-</span> copy<span class="Constant"> 0</span>
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<span id="L138" class="LineNr">138 </span> length:num <span class="Special"><-</span> length *array
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<span id="L139" class="LineNr">139 </span> end:num <span class="Special"><-</span> subtract length,<span class="Constant"> 1</span>
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<span id="L140" class="LineNr">140 </span> <span class="Delimiter">{</span>
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<span id="L141" class="LineNr">141 </span> done?:bool <span class="Special"><-</span> greater-or-equal start, end
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<span id="L142" class="LineNr">142 </span> <span class="muControl">break-if</span> done?
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<span id="L143" class="LineNr">143 </span> array <span class="Special"><-</span> <a href='063array.mu.html#L108'>swap</a> array, start, end
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<span id="L144" class="LineNr">144 </span> start <span class="Special"><-</span> add start,<span class="Constant"> 1</span>
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<span id="L145" class="LineNr">145 </span> end <span class="Special"><-</span> subtract end,<span class="Constant"> 1</span>
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<span id="L146" class="LineNr">146 </span> <span class="muControl"> loop</span>
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<span id="L147" class="LineNr">147 </span> <span class="Delimiter">}</span>
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<span id="L148" class="LineNr">148 </span>]
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<span id="L149" class="LineNr">149 </span>
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<span id="L150" class="LineNr">150 </span><span class="muScenario">scenario</span> reverse-array-odd-length [
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<span id="L151" class="LineNr">151 </span> <span class="Constant">local-scope</span>
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<span id="L152" class="LineNr">152 </span> array:&:@:num <span class="Special"><-</span> new <span class="Constant">number:type</span>,<span class="Constant"> 3</span>
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<span id="L153" class="LineNr">153 </span> array <span class="Special"><-</span> <a href='063array.mu.html#L44'>fill</a> array,<span class="Constant"> 3 2 1</span>
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<span id="L154" class="LineNr">154 </span> run [
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<span id="L155" class="LineNr">155 </span> array <span class="Special"><-</span> reverse array
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<span id="L156" class="LineNr">156 </span> 10:@:num/<span class="Special">raw</span> <span class="Special"><-</span> copy *array
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<span id="L157" class="LineNr">157 </span> ]
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<span id="L158" class="LineNr">158 </span> memory-should-contain [
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<span id="L159" class="LineNr">159 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 3</span>
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<span id="L160" class="LineNr">160 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span>
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<span id="L161" class="LineNr">161 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 2</span>
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<span id="L162" class="LineNr">162 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 3</span>
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<span id="L163" class="LineNr">163 </span> ]
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<span id="L164" class="LineNr">164 </span>]
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<span id="L165" class="LineNr">165 </span>
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<span id="L166" class="LineNr">166 </span><span class="muScenario">scenario</span> reverse-array-even-length [
|
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<span id="L167" class="LineNr">167 </span> <span class="Constant">local-scope</span>
|
|
<span id="L168" class="LineNr">168 </span> array:&:@:num <span class="Special"><-</span> new <span class="Constant">number:type</span>,<span class="Constant"> 4</span>
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|
<span id="L169" class="LineNr">169 </span> array <span class="Special"><-</span> <a href='063array.mu.html#L44'>fill</a> array,<span class="Constant"> 4 3 2 1</span>
|
|
<span id="L170" class="LineNr">170 </span> run [
|
|
<span id="L171" class="LineNr">171 </span> array <span class="Special"><-</span> reverse array
|
|
<span id="L172" class="LineNr">172 </span> 10:@:num/<span class="Special">raw</span> <span class="Special"><-</span> copy *array
|
|
<span id="L173" class="LineNr">173 </span> ]
|
|
<span id="L174" class="LineNr">174 </span> memory-should-contain [
|
|
<span id="L175" class="LineNr">175 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 4</span>
|
|
<span id="L176" class="LineNr">176 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span>
|
|
<span id="L177" class="LineNr">177 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 2</span>
|
|
<span id="L178" class="LineNr">178 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 3</span>
|
|
<span id="L179" class="LineNr">179 </span> <span class="Constant"> 14</span> <span class="Special"><-</span><span class="Constant"> 4</span>
|
|
<span id="L180" class="LineNr">180 </span> ]
|
|
<span id="L181" class="LineNr">181 </span>]
|
|
</pre>
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