boost-react-native-bundle

<?xml version="1.0" encoding="utf-8" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="generator" content="Docutils 0.7: http://docutils.sourceforge.net/" /> <title>The MPL Reference Manual: quote</title> <link rel="stylesheet" href="../style.css" type="text/css" /> </head> <body class="docframe refmanual"> <table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./bind.html" class="navigation-link">Prev</a> <a href="./arg.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./bind.html" class="navigation-link">Back</a> <a href="./arg.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./composition-and-argument-binding.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> <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="./composition-and-argument-binding.html" class="navigation-link">Composition and Argument Binding</a> / <a href="./quote.html" class="navigation-link">quote</a></td> </tr></table><div class="header-separator"></div> <div class="section" id="quote"> <h1><a class="toc-backref" href="./composition-and-argument-binding.html#id1532">quote</a></h1> <div class="section" id="id938"> <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> <pre class="literal-block"> template< template< typename P1 > class F , typename Tag = <em>unspecified</em> > struct quote1 { // <em>unspecified</em> // <em>...</em> }; <em>...</em> template< template< typename P1,<em>...</em> typename P<em>n</em> > class F , typename Tag = <em>unspecified</em> > struct <a href="./quote.html" class="identifier">quote</a><em>n</em> { // <em>unspecified</em> // <em>...</em> }; </pre> </div> <div class="section" id="id939"> <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> <p><tt class="literal"><span class="pre"><a href="./quote.html" class="identifier">quote</a></span></tt><em>n</em> is a higher-order primitive that wraps an <em>n</em>-ary <a class="reference internal" href="./metafunction.html">Metafunction</a> to create a corresponding <a class="reference internal" href="./metafunction-class.html">Metafunction Class</a>.</p> </div> <div class="section" id="id940"> <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> <pre class="literal-block"> #include <<a href="../../../../boost/mpl/quote.hpp" class="header">boost/mpl/quote.hpp</a>> </pre> </div> <div class="section" id="id941"> <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3> <p><a class="reference internal" href="./metafunction-class.html">Metafunction Class</a></p> </div> <div class="section" id="id942"> <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3> <table border="1" class="docutils table"> <colgroup> <col width="18%" /> <col width="27%" /> <col width="55%" /> </colgroup> <thead valign="bottom"> <tr><th class="head">Parameter</th> <th class="head">Requirement</th> <th class="head">Description</th> </tr> </thead> <tbody valign="top"> <tr><td><tt class="literal"><span class="pre">F</span></tt></td> <td><a class="reference internal" href="./metafunction.html">Metafunction</a></td> <td>A metafunction to wrap.</td> </tr> <tr><td><tt class="literal"><span class="pre">Tag</span></tt></td> <td>Any type</td> <td>A tag determining wrap semantics.</td> </tr> </tbody> </table> </div> <div class="section" id="id943"> <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> <p>For any <em>n</em>-ary <a class="reference internal" href="./metafunction.html">Metafunction</a> <tt class="literal"><span class="pre">f</span></tt> and arbitrary type <tt class="literal"><span class="pre">tag</span></tt>:</p> <pre class="literal-block"> typedef <a href="./quote.html" class="identifier">quote</a><em>n</em><f> g; typedef <a href="./quote.html" class="identifier">quote</a><em>n</em><f,tag> g; </pre> <table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field"><th class="field-name">Return type:</th><td class="field-body"><p class="first"><a class="reference internal" href="./metafunction-class.html">Metafunction Class</a></p> </td> </tr> <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first">Equivalent to</p> <pre class="literal-block"> struct g { template< typename A1,<em>...</em> typename A<em>n</em> > struct <a href="./apply.html" class="identifier">apply</a> : f<A1,<em>...</em>A<em>n</em>> { }; }; </pre> <p>if <tt class="literal"><span class="pre">f<A1,...An></span></tt> has a nested type member <tt class="literal"><span class="pre">::type</span></tt>, and to</p> <pre class="literal-block"> struct g { template< typename A1,<em>...</em> typename A<em>n</em> > struct <a href="./apply.html" class="identifier">apply</a> { typedef f<A1,<em>...</em>A<em>n</em>> type; }; }; </pre> <p class="last">otherwise.</p> </td> </tr> </tbody> </table> </div> <div class="section" id="id944"> <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> <pre class="literal-block"> template< typename T > struct f1 { typedef T type; }; template< typename T1, typename T2, typename T3, typename T4, typename T5 > struct f5 { // no 'type' member! }; typedef <a href="./quote.html" class="identifier">quote</a><tt class="literal"><span class="pre">1</span></tt><f1>::<a href="./apply.html" class="identifier">apply</a><int>::type t1; typedef <a href="./quote.html" class="identifier">quote</a><tt class="literal"><span class="pre">5</span></tt><f5>::<a href="./apply.html" class="identifier">apply</a><char,short,int,long,float>::type t5; <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( is_same< t1, int > )); <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( is_same< t5, f5<char,short,int,long,float> > )); </pre> </div> <div class="section" id="id945"> <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> <p><a class="reference internal" href="./composition-and-argument-binding.html">Composition and Argument Binding</a>, <a class="reference internal" href="./invocation.html">invocation</a>, <a class="reference internal" href="./bind.html">bind</a>, <a class="reference internal" href="./lambda.html">lambda</a>, <a class="reference internal" href="./protect.html">protect</a>, <a class="reference internal" href="./apply.html">apply</a></p>  </div> </div> <div class="footer-separator"></div> <table class="footer"><tr class="footer"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./bind.html" class="navigation-link">Prev</a> <a href="./arg.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./bind.html" class="navigation-link">Back</a> <a href="./arg.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./composition-and-argument-binding.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> <td><div class="copyright-footer"><div class="copyright">Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</div> Distributed under the Boost Software License, Version 1.0. (See accompanying 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> </html>