<!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 - tangle.mu</title> <meta name="Generator" content="Vim/8.0"> <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; } .muControl { color: #c0a020; } .muRecipe { color: #ff8700; } .LineNr { color: #444444; } .Delimiter { color: #800080; } .Constant { color: #00a0a0; } .Special { color: #c00000; } .Comment { color: #9090ff; } .Comment a { color:#0000ee; text-decoration:underline; } --> </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: constructing functions out of order</span> <span id="L2" class="LineNr"> 2 </span><span class="Comment">#</span> <span id="L3" class="LineNr"> 3 </span><span class="Comment"># We construct a factorial function with separate base and recursive cases.</span> <span id="L4" class="LineNr"> 4 </span><span class="Comment"># Compare factorial.mu.</span> <span id="L5" class="LineNr"> 5 </span><span class="Comment">#</span> <span id="L6" class="LineNr"> 6 </span><span class="Comment"># This isn't a very tasteful example, just a basic demonstration of</span> <span id="L7" class="LineNr"> 7 </span><span class="Comment"># possibilities.</span> <span id="L8" class="LineNr"> 8 </span> <span id="L9" class="LineNr"> 9 </span><span class="muRecipe">def</span> <a href='tangle.mu.html#L9'>factorial</a> n:num<span class="muRecipe"> -> </span>result:num [ <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><span class="Constant"> <a href='tangle.mu.html#L12'><factorial-cases></a></span> <span id="L13" class="LineNr">13 </span>] <span id="L14" class="LineNr">14 </span> <span id="L15" class="LineNr">15 </span><span class="muRecipe">after</span> <span class="Constant"><a href='tangle.mu.html#L12'><factorial-cases></a></span> [ <span id="L16" class="LineNr">16 </span> <span class="Comment"># if n=0 return 1</span> <span id="L17" class="LineNr">17 </span> <span class="muControl">return-unless</span> n,<span class="Constant"> 1</span> <span id="L18" class="LineNr">18 </span>] <span id="L19" class="LineNr">19 </span> <span id="L20" class="LineNr">20 </span><span class="muRecipe">after</span> <span class="Constant"><a href='tangle.mu.html#L12'><factorial-cases></a></span> [ <span id="L21" class="LineNr">21 </span> <span class="Comment"># return n * factorial(n - 1)</span> <span id="L22" class="LineNr">22 </span> <span class="Delimiter">{</span> <span id="L23" class="LineNr">23 </span> <span class="muControl">break-unless</span> n <span id="L24" class="LineNr">24 </span> x:num <span class="Special"><-</span> subtract n,<span class="Constant"> 1</span> <span id="L25" class="LineNr">25 </span> subresult:num <span class="Special"><-</span> <a href='tangle.mu.html#L9'>factorial</a> x <span id="L26" class="LineNr">26 </span> result <span class="Special"><-</span> multiply subresult, n <span id="L27" class="LineNr">27 </span> <span class="muControl"> return</span> result <span id="L28" class="LineNr">28 </span> <span class="Delimiter">}</span> <span id="L29" class="LineNr">29 </span>] <span id="L30" class="LineNr">30 </span> <span id="L31" class="LineNr">31 </span><span class="muRecipe">def</span> <a href='tangle.mu.html#L31'>main</a> [ <span id="L32" class="LineNr">32 </span> 1:num <span class="Special"><-</span> <a href='tangle.mu.html#L9'>factorial</a><span class="Constant"> 5</span> <span id="L33" class="LineNr">33 </span> <span class="Comment"># trailing space in next line is to help with syntax highlighting</span> <span id="L34" class="LineNr">34 </span> $print <span class="Constant">[result: ]</span>, 1:num, <span class="Constant">[ </span> <span id="L35" class="LineNr">35 </span><span class="Constant">]</span> <span id="L36" class="LineNr">36 </span>] </pre> </body> </html> <!-- vim: set foldmethod=manual : -->