about summary refs log blame commit diff stats
path: root/html/counters.mu.html
blob: bc824899819fcd9e48b249a65f025a2e977f1383 (plain) (tree)
1
2
3
4
5
6
7
8
9



                                                                                          
                               
                                         
                                                
                                   
                                                                                                               
                                           

                       


                                                                                                 
                                       
                                      
                             
                            

                                                        

                             

        



                               






















                                                                                 

         
       
                             
                         


                                                                                                                                              
                                                                                                                                                                                                                    
                                                                                                                                                                                                         
                                                                                                                               

                                        
                                                                                                                                                                                                                                                       
                                                                                   
                                                                                   
                                                                                                                                                                                                                                        


                                                                                                       
                                                                                                                   

                                                                                   
                                                                                                                                                                                                                       
                                                                                  
                                                                                                                                                                                                                       
                                                                                                                  


                                                                                                                                                                               

                                                                                                                                               
                                                                                                                                                                                      
                                         


       
                                     
<!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 - counters.mu</title>
<meta name="Generator" content="Vim/7.4">
<meta name="plugin-version" content="vim7.4_v2">
<meta name="syntax" content="none">
<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; }
body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; }
a { color:#eeeeee; text-decoration: none; }
a:hover { text-decoration: underline; }
* { font-size: 12pt; font-size: 1em; }
.muRecipe { color: #ff8700; }
.Special { color: #c00000; }
.Comment { color: #9090ff; }
.Comment a { color:#0000ee; text-decoration:underline; }
.Constant { color: #00a0a0; }
.LineNr { color: #444444; }
-->
</style>

<script type='text/javascript'>
<!--

/* function to open any folds containing a jumped-to line before jumping to it */
function JumpToLine()
{
  var lineNum;
  lineNum = window.location.hash;
  lineNum = lineNum.substr(1); /* strip off '#' */

  if (lineNum.indexOf('L') == -1) {
    lineNum = 'L'+lineNum;
  }
  lineElem = document.getElementById(lineNum);
  /* Always jump to new location even if the line was hidden inside a fold, or
   * we corrected the raw number to a line ID.
   */
  if (lineElem) {
    lineElem.scrollIntoView(true);
  }
  return true;
}
if ('onhashchange' in window) {
  window.onhashchange = JumpToLine;
}

-->
</script>
</head>
<body onload='JumpToLine();'>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment"># example program: maintain multiple counters with isolated lexical scopes</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment"># (spaces)</span>
<span id="L3" class="LineNr"> 3 </span>
<span id="L4" class="LineNr"> 4 </span><span class="muRecipe">def</span> <a href='counters.mu.html#L4'>new-counter</a> n:num<span class="muRecipe"> -&gt; </span><span class="Constant">default-space</span>:space [
<span id="L5" class="LineNr"> 5 </span>  <span class="Constant">default-space</span> <span class="Special">&lt;-</span> new <span class="Constant">location:type</span>,<span class="Constant"> 30</span>
<span id="L6" class="LineNr"> 6 </span>  <span class="Constant">load-inputs</span>  <span class="Comment"># initialize n</span>
<span id="L7" class="LineNr"> 7 </span>]
<span id="L8" class="LineNr"> 8 </span>
<span id="L9" class="LineNr"> 9 </span><span class="muRecipe">def</span> <a href='counters.mu.html#L9'>increment-counter</a> outer:space/names:<a href='counters.mu.html#L4'>new-counter</a>, x:num<span class="muRecipe"> -&gt; </span>n:num/space:1 [
<span id="L10" class="LineNr">10 </span>  <span class="Constant">local-scope</span>
<span id="L11" class="LineNr">11 </span>  <span class="Constant">load-inputs</span>
<span id="L12" class="LineNr">12 </span>  0:space/names:<a href='counters.mu.html#L4'>new-counter</a> <span class="Special">&lt;-</span> copy outer  <span class="Comment"># setup outer space; it *must* come from 'new-counter'</span>
<span id="L13" class="LineNr">13 </span>  n/space:1 <span class="Special">&lt;-</span> add n/space:1, x
<span id="L14" class="LineNr">14 </span>]
<span id="L15" class="LineNr">15 </span>
<span id="L16" class="LineNr">16 </span><span class="muRecipe">def</span> <a href='counters.mu.html#L16'>main</a> [
<span id="L17" class="LineNr">17 </span>  <span class="Constant">local-scope</span>
<span id="L18" class="LineNr">18 </span>  <span class="Comment"># counter A</span>
<span id="L19" class="LineNr">19 </span>  a:space/names:<a href='counters.mu.html#L4'>new-counter</a> <span class="Special">&lt;-</span> <a href='counters.mu.html#L4'>new-counter</a><span class="Constant"> 34</span>
<span id="L20" class="LineNr">20 </span>  <span class="Comment"># counter B</span>
<span id="L21" class="LineNr">21 </span>  b:space/names:<a href='counters.mu.html#L4'>new-counter</a> <span class="Special">&lt;-</span> <a href='counters.mu.html#L4'>new-counter</a><span class="Constant"> 23</span>
<span id="L22" class="LineNr">22 </span>  <span class="Comment"># increment both by 2 but in different ways</span>
<span id="L23" class="LineNr">23 </span>  <a href='counters.mu.html#L9'>increment-counter</a> a,<span class="Constant"> 1</span>
<span id="L24" class="LineNr">24 </span>  b-value:num <span class="Special">&lt;-</span> <a href='counters.mu.html#L9'>increment-counter</a> b,<span class="Constant"> 2</span>
<span id="L25" class="LineNr">25 </span>  a-value:num <span class="Special">&lt;-</span> <a href='counters.mu.html#L9'>increment-counter</a> a,<span class="Constant"> 1</span>
<span id="L26" class="LineNr">26 </span>  <span class="Comment"># check results</span>
<span id="L27" class="LineNr">27 </span>  $print <span class="Constant">[Contents of counters]</span>, <span class="Constant">10/newline</span>
<span id="L28" class="LineNr">28 </span>  $print <span class="Constant">[a: ]</span>, a-value, <span class="Constant">[ b: ]</span>, b-value, <span class="Constant">10/newline</span>
<span id="L29" class="LineNr">29 </span>]
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->