HCoop / hcoop / debian / mlton.git / blame
| Commit | Line | Data |
|---|---|---|
| 7f918cf1 CE |
1 | <!DOCTYPE html>\r |
| 2 | <html lang="en">\r | |
| 3 | <head>\r | |
| 4 | <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">\r | |
| 5 | <meta name="generator" content="AsciiDoc 8.6.9">\r | |
| 6 | <title>MLtonCont</title>\r | |
| 7 | <link rel="stylesheet" href="./asciidoc.css" type="text/css">\r | |
| 8 | <link rel="stylesheet" href="./pygments.css" type="text/css">\r | |
| 9 | \r | |
| 10 | \r | |
| 11 | <script type="text/javascript" src="./asciidoc.js"></script>\r | |
| 12 | <script type="text/javascript">\r | |
| 13 | /*<![CDATA[*/\r | |
| 14 | asciidoc.install();\r | |
| 15 | /*]]>*/\r | |
| 16 | </script>\r | |
| 17 | <link rel="stylesheet" href="./mlton.css" type="text/css">\r | |
| 18 | </head>\r | |
| 19 | <body class="article">\r | |
| 20 | <div id="banner">\r | |
| 21 | <div id="banner-home">\r | |
| 22 | <a href="./Home">MLton 20180207</a>\r | |
| 23 | </div>\r | |
| 24 | </div>\r | |
| 25 | <div id="header">\r | |
| 26 | <h1>MLtonCont</h1>\r | |
| 27 | </div>\r | |
| 28 | <div id="content">\r | |
| 29 | <div id="preamble">\r | |
| 30 | <div class="sectionbody">\r | |
| 31 | <div class="listingblock">\r | |
| 32 | <div class="content"><div class="highlight"><pre><span class="k">signature</span><span class="w"> </span><span class="n">MLTON_CONT</span><span class="w"> </span><span class="p">=</span><span class="w"></span>\r | |
| 33 | <span class="w"> </span><span class="k">sig</span><span class="w"></span>\r | |
| 34 | <span class="w"> </span><span class="k">type</span><span class="w"> </span><span class="n">'a</span><span class="w"> </span><span class="n">t</span><span class="w"></span>\r | |
| 35 | \r | |
| 36 | <span class="w"> </span><span class="k">val</span><span class="w"> </span><span class="n">callcc</span><span class="p">:</span><span class="w"> </span><span class="p">(</span><span class="n">'a</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">'a</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">'a</span><span class="w"></span>\r | |
| 37 | <span class="w"> </span><span class="k">val</span><span class="w"> </span><span class="n">isolate</span><span class="p">:</span><span class="w"> </span><span class="p">(</span><span class="n">'a</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">unit</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">'a</span><span class="w"> </span><span class="n">t</span><span class="w"></span>\r | |
| 38 | <span class="w"> </span><span class="k">val</span><span class="w"> </span><span class="n">prepend</span><span class="p">:</span><span class="w"> </span><span class="n">'a</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="n">*</span><span class="w"> </span><span class="p">(</span><span class="n">'b</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">'a</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">'b</span><span class="w"> </span><span class="n">t</span><span class="w"></span>\r | |
| 39 | <span class="w"> </span><span class="k">val</span><span class="w"> </span><span class="n">throw</span><span class="p">:</span><span class="w"> </span><span class="n">'a</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="n">*</span><span class="w"> </span><span class="n">'a</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">'b</span><span class="w"></span>\r | |
| 40 | <span class="w"> </span><span class="k">val</span><span class="w"> </span><span class="n">throw'</span><span class="p">:</span><span class="w"> </span><span class="n">'a</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="n">*</span><span class="w"> </span><span class="p">(</span><span class="n">unit</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">'a</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">'b</span><span class="w"></span>\r | |
| 41 | <span class="w"> </span><span class="k">end</span><span class="w"></span>\r | |
| 42 | </pre></div></div></div>\r | |
| 43 | <div class="ulist"><ul>\r | |
| 44 | <li>\r | |
| 45 | <p>\r | |
| 46 | <span class="monospaced">type 'a t</span>\r | |
| 47 | </p>\r | |
| 48 | <div class="paragraph"><p>the type of continuations that expect a value of type <span class="monospaced">'a</span>.</p></div>\r | |
| 49 | </li>\r | |
| 50 | <li>\r | |
| 51 | <p>\r | |
| 52 | <span class="monospaced">callcc f</span>\r | |
| 53 | </p>\r | |
| 54 | <div class="paragraph"><p>applies <span class="monospaced">f</span> to the current continuation. This copies the entire\r | |
| 55 | stack; hence, <span class="monospaced">callcc</span> takes time proportional to the size of the\r | |
| 56 | current stack.</p></div>\r | |
| 57 | </li>\r | |
| 58 | <li>\r | |
| 59 | <p>\r | |
| 60 | <span class="monospaced">isolate f</span>\r | |
| 61 | </p>\r | |
| 62 | <div class="paragraph"><p>creates a continuation that evaluates <span class="monospaced">f</span> in an empty context. This\r | |
| 63 | is a constant time operation, and yields a constant size stack.</p></div>\r | |
| 64 | </li>\r | |
| 65 | <li>\r | |
| 66 | <p>\r | |
| 67 | <span class="monospaced">prepend (k, f)</span>\r | |
| 68 | </p>\r | |
| 69 | <div class="paragraph"><p>composes a function <span class="monospaced">f</span> with a continuation <span class="monospaced">k</span> to create a\r | |
| 70 | continuation that first does <span class="monospaced">f</span> and then does <span class="monospaced">k</span>. This is a\r | |
| 71 | constant time operation.</p></div>\r | |
| 72 | </li>\r | |
| 73 | <li>\r | |
| 74 | <p>\r | |
| 75 | <span class="monospaced">throw (k, v)</span>\r | |
| 76 | </p>\r | |
| 77 | <div class="paragraph"><p>throws value <span class="monospaced">v</span> to continuation <span class="monospaced">k</span>. This copies the entire stack of\r | |
| 78 | <span class="monospaced">k</span>; hence, <span class="monospaced">throw</span> takes time proportional to the size of this stack.</p></div>\r | |
| 79 | </li>\r | |
| 80 | <li>\r | |
| 81 | <p>\r | |
| 82 | <span class="monospaced">throw' (k, th)</span>\r | |
| 83 | </p>\r | |
| 84 | <div class="paragraph"><p>a generalization of throw that evaluates <span class="monospaced">th ()</span> in the context of\r | |
| 85 | <span class="monospaced">k</span>. Thus, for example, if <span class="monospaced">th ()</span> raises an exception or captures\r | |
| 86 | another continuation, it will see <span class="monospaced">k</span>, not the current continuation.</p></div>\r | |
| 87 | </li>\r | |
| 88 | </ul></div>\r | |
| 89 | </div>\r | |
| 90 | </div>\r | |
| 91 | <div class="sect1">\r | |
| 92 | <h2 id="_also_see">Also see</h2>\r | |
| 93 | <div class="sectionbody">\r | |
| 94 | <div class="ulist"><ul>\r | |
| 95 | <li>\r | |
| 96 | <p>\r | |
| 97 | <a href="MLtonContIsolateImplementation">MLtonContIsolateImplementation</a>\r | |
| 98 | </p>\r | |
| 99 | </li>\r | |
| 100 | </ul></div>\r | |
| 101 | </div>\r | |
| 102 | </div>\r | |
| 103 | </div>\r | |
| 104 | <div id="footnotes"><hr></div>\r | |
| 105 | <div id="footer">\r | |
| 106 | <div id="footer-text">\r | |
| 107 | </div>\r | |
| 108 | <div id="footer-badges">\r | |
| 109 | </div>\r | |
| 110 | </div>\r | |
| 111 | </body>\r | |
| 112 | </html>\r |