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1 | <?xml version="1.0" encoding="utf-8" ?> |
| 2 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
| 3 | <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> | |
| 4 | <head> | |
| 5 | <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> | |
| 6 | <meta name="generator" content="Docutils 0.7: http://docutils.sourceforge.net/" /> | |
| 7 | <title>The MPL Reference Manual: apply</title> | |
| 8 | <link rel="stylesheet" href="../style.css" type="text/css" /> | |
| 9 | </head> | |
| 10 | <body class="docframe refmanual"> | |
| 11 | <table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./invocation.html" class="navigation-link">Prev</a> <a href="./apply-wrap.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group">Back <a href="./apply-wrap.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./invocation.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td> | |
| 12 | <td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./metafunctions.html" class="navigation-link">Metafunctions</a> / <a href="./invocation.html" class="navigation-link">Invocation</a> / <a href="./apply.html" class="navigation-link">apply</a></td> | |
| 13 | </tr></table><div class="header-separator"></div> | |
| 14 | <div class="section" id="apply"> | |
| 15 | <h1><a class="toc-backref" href="./invocation.html#id1525">apply</a></h1> | |
| 16 | <div class="section" id="id887"> | |
| 17 | <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> | |
| 18 | <pre class="literal-block"> | |
| 19 | template< | |
| 20 | typename F | |
| 21 | > | |
| 22 | struct apply0 | |
| 23 | { | |
| 24 | typedef <em>unspecified</em> type; | |
| 25 | }; | |
| 26 | ||
| 27 | template< | |
| 28 | typename F, typename A1 | |
| 29 | > | |
| 30 | struct apply1 | |
| 31 | { | |
| 32 | typedef <em>unspecified</em> type; | |
| 33 | }; | |
| 34 | ||
| 35 | <em>...</em> | |
| 36 | ||
| 37 | template< | |
| 38 | typename F, typename A1,<em>...</em> typename An | |
| 39 | > | |
| 40 | struct <a href="./apply.html" class="identifier">apply</a><em>n</em> | |
| 41 | { | |
| 42 | typedef <em>unspecified</em> type; | |
| 43 | }; | |
| 44 | ||
| 45 | template< | |
| 46 | typename F | |
| 47 | , typename A1 = <em>unspecified</em> | |
| 48 | <em>...</em> | |
| 49 | , typename An = <em>unspecified</em> | |
| 50 | > | |
| 51 | struct <a href="./apply.html" class="identifier">apply</a> | |
| 52 | { | |
| 53 | typedef <em>unspecified</em> type; | |
| 54 | }; | |
| 55 | </pre> | |
| 56 | </div> | |
| 57 | <div class="section" id="id888"> | |
| 58 | <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> | |
| 59 | <p>Invokes a <a class="reference internal" href="./metafunction-class.html">Metafunction Class</a> or a <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a> <tt class="literal"><span class="pre">F</span></tt> with arguments <tt class="literal"><span class="pre">A1</span></tt>,... <tt class="literal"><span class="pre">An</span></tt>.</p> | |
| 60 | </div> | |
| 61 | <div class="section" id="id889"> | |
| 62 | <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> | |
| 63 | <pre class="literal-block"> | |
| 64 | #include <<a href="../../../../boost/mpl/apply.hpp" class="header">boost/mpl/apply.hpp</a>> | |
| 65 | </pre> | |
| 66 | </div> | |
| 67 | <div class="section" id="id890"> | |
| 68 | <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3> | |
| 69 | <table border="1" class="docutils table"> | |
| 70 | <colgroup> | |
| 71 | <col width="15%" /> | |
| 72 | <col width="36%" /> | |
| 73 | <col width="48%" /> | |
| 74 | </colgroup> | |
| 75 | <thead valign="bottom"> | |
| 76 | <tr><th class="head">Parameter</th> | |
| 77 | <th class="head">Requirement</th> | |
| 78 | <th class="head">Description</th> | |
| 79 | </tr> | |
| 80 | </thead> | |
| 81 | <tbody valign="top"> | |
| 82 | <tr><td><tt class="literal"><span class="pre">F</span></tt></td> | |
| 83 | <td><a class="reference internal" href="./lambda-expression.html">Lambda Expression</a></td> | |
| 84 | <td>An expression to invoke.</td> | |
| 85 | </tr> | |
| 86 | <tr><td><tt class="literal"><span class="pre">A1</span></tt>,... <tt class="literal"><span class="pre">An</span></tt></td> | |
| 87 | <td>Any type</td> | |
| 88 | <td>Invocation arguments.</td> | |
| 89 | </tr> | |
| 90 | </tbody> | |
| 91 | </table> | |
| 92 | </div> | |
| 93 | <div class="section" id="id891"> | |
| 94 | <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> | |
| 95 | <p>For any <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a> <tt class="literal"><span class="pre">f</span></tt> and arbitrary types <tt class="literal"><span class="pre">a1</span></tt>,... <tt class="literal"><span class="pre">an</span></tt>:</p> | |
| 96 | <pre class="literal-block"> | |
| 97 | typedef <a href="./apply.html" class="identifier">apply</a><em>n</em><f,a1,<em>...</em>a<em>n</em>>::type t; | |
| 98 | typedef <a href="./apply.html" class="identifier">apply</a><f,a1,<em>...</em>a<em>n</em>>::type t; | |
| 99 | </pre> | |
| 100 | <table class="docutils field-list" frame="void" rules="none"> | |
| 101 | <col class="field-name" /> | |
| 102 | <col class="field-body" /> | |
| 103 | <tbody valign="top"> | |
| 104 | <tr class="field"><th class="field-name">Return type:</th><td class="field-body">Any type.</td> | |
| 105 | </tr> | |
| 106 | <tr class="field"><th class="field-name">Semantics:</th><td class="field-body">Equivalent to <tt class="literal"><span class="pre">typedef</span> <span class="pre"><a href="./apply-wrap.html" class="identifier">apply_wrap</a></span></tt><em>n</em><tt class="literal"><span class="pre"><</span> <span class="pre"><a href="./lambda.html" class="identifier">lambda</a><f>::type,a1,...</span> <span class="pre">an>::type</span> <span class="pre">t;</span></tt>.</td> | |
| 107 | </tr> | |
| 108 | </tbody> | |
| 109 | </table> | |
| 110 | </div> | |
| 111 | <div class="section" id="id892"> | |
| 112 | <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> | |
| 113 | <pre class="literal-block"> | |
| 114 | template< typename N1, typename N2 > struct int_plus | |
| 115 | : <a href="./int.html" class="identifier">int_</a><( N1::value + N2::value )> | |
| 116 | { | |
| 117 | }; | |
| 118 | ||
| 119 | typedef <a href="./apply.html" class="identifier">apply</a>< int_plus<<a href="./placeholders.html" class="identifier">_1</a>,<a href="./placeholders.html" class="identifier">_2</a>>, <a href="./int.html" class="identifier">int_</a><2>, <a href="./int.html" class="identifier">int_</a><3> >::type r1; | |
| 120 | typedef <a href="./apply.html" class="identifier">apply</a>< <a href="./quote.html" class="identifier">quote</a><tt class="literal"><span class="pre">2</span></tt><int_plus>, <a href="./int.html" class="identifier">int_</a><2>, <a href="./int.html" class="identifier">int_</a><3> >::type r2; | |
| 121 | ||
| 122 | <a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( r1::value, ==, 5 ); | |
| 123 | <a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( r2::value, ==, 5 ); | |
| 124 | </pre> | |
| 125 | </div> | |
| 126 | <div class="section" id="id893"> | |
| 127 | <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> | |
| 128 | <p><a class="reference internal" href="./metafunctions.html">Metafunctions</a>, <a class="reference internal" href="./apply-wrap.html">apply_wrap</a>, <a class="reference internal" href="./lambda.html">lambda</a>, <a class="reference internal" href="./quote.html">quote</a>, <a class="reference internal" href="./bind.html">bind</a></p> | |
| 129 | <!-- Metafunctions/Invocation//apply_wrap |20 --> | |
| 130 | </div> | |
| 131 | </div> | |
| 132 | ||
| 133 | <div class="footer-separator"></div> | |
| 134 | <table class="footer"><tr class="footer"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./invocation.html" class="navigation-link">Prev</a> <a href="./apply-wrap.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group">Back <a href="./apply-wrap.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./invocation.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td> | |
| 135 | <td><div class="copyright-footer"><div class="copyright">Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</div> | |
| 136 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
| 137 | file LICENSE_1_0.txt or copy at <a class="reference external" href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</div></td></tr></table></body> | |
| 138 | </html> |