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: order</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="./key-type.html" class="navigation-link">Prev</a> <a href="./pop-back.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./key-type.html" class="navigation-link">Back</a> <a href="./pop-back.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./intrinsic-metafunctions.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="./sequences.html" class="navigation-link">Sequences</a> / <a href="./intrinsic-metafunctions.html" class="navigation-link">Intrinsic Metafunctions</a> / <a href="./order.html" class="navigation-link">order</a></td> </tr></table><div class="header-separator"></div> <div class="section" id="order"> <h1><a class="toc-backref" href="./intrinsic-metafunctions.html#id1440">order</a></h1> <div class="section" id="id309"> <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> <pre class="literal-block"> template< typename Sequence , typename Key > struct <a href="./order.html" class="identifier">order</a> { typedef <em>unspecified</em> type; }; </pre> </div> <div class="section" id="id310"> <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> <p>Returns a unique unsigned <a class="reference internal" href="./integral-constant.html">Integral Constant</a> associated with the key <tt class="literal"><span class="pre">Key</span></tt> in <tt class="literal"><span class="pre">Sequence</span></tt>.</p> </div> <div class="section" id="id311"> <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> <pre class="literal-block"> #include <<a href="../../../../boost/mpl/order.hpp" class="header">boost/mpl/order.hpp</a>> </pre> </div> <div class="section" id="id312"> <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3> <p><a class="reference internal" href="./tag-dispatched-metafunction.html">Tag Dispatched Metafunction</a></p> </div> <div class="section" id="id313"> <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3> <table border="1" class="docutils table"> <colgroup> <col width="17%" /> <col width="30%" /> <col width="53%" /> </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">Sequence</span></tt></td> <td><a class="reference internal" href="./associative-sequence.html">Associative Sequence</a></td> <td>A sequence to query.</td> </tr> <tr><td><tt class="literal"><span class="pre">Key</span></tt></td> <td>Any type</td> <td>The queried key.</td> </tr> </tbody> </table> </div> <div class="section" id="id314"> <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> <p>For any <a class="reference internal" href="./associative-sequence.html">Associative Sequence</a> <tt class="literal"><span class="pre">s</span></tt>, and arbitrary type <tt class="literal"><span class="pre">key</span></tt>:</p> <pre class="literal-block"> typedef <a href="./order.html" class="identifier">order</a><s,key>::type n; </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">Unsigned <a class="reference internal" href="./integral-constant.html">Integral Constant</a>.</td> </tr> <tr class="field"><th class="field-name">Semantics:</th><td class="field-body">If <tt class="literal"><span class="pre"><a href="./has-key.html" class="identifier">has_key</a><s,key>::value</span> <span class="pre">==</span> <span class="pre">true</span></tt>, <tt class="literal"><span class="pre">n</span></tt> is a unique unsigned <a class="reference internal" href="./integral-constant.html">Integral Constant</a> associated with <tt class="literal"><span class="pre">key</span></tt> in <tt class="literal"><span class="pre">s</span></tt>; otherwise, <tt class="literal"><span class="pre">n</span></tt> is identical to <tt class="literal"><span class="pre"><a href="./void.html" class="identifier">void_</a></span></tt>.</td> </tr> </tbody> </table> </div> <div class="section" id="id315"> <h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3> <p>Amortized constant time.</p> </div> <div class="section" id="id316"> <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> <pre class="literal-block"> typedef <a href="./map.html" class="identifier">map</a>< <a href="./pair.html" class="identifier">pair</a><int,unsigned>, <a href="./pair.html" class="identifier">pair</a><char,long> > m; <a href="./assert-not.html" class="identifier">BOOST_MPL_ASSERT_NOT</a>(( is_same< <a href="./order.html" class="identifier">order</a><m,int>::type, <a href="./void.html" class="identifier">void_</a> > )); <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( is_same< <a href="./order.html" class="identifier">order</a><m,long>::type,<a href="./void.html" class="identifier">void_</a> > )); </pre> </div> <div class="section" id="id317"> <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> <p><a class="reference internal" href="./associative-sequence.html">Associative Sequence</a>, <a class="reference internal" href="./has-key.html">has_key</a>, <a class="reference internal" href="./count.html">count</a>, <a class="reference internal" href="./map.html">map</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="./key-type.html" class="navigation-link">Prev</a> <a href="./pop-back.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./key-type.html" class="navigation-link">Back</a> <a href="./pop-back.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./intrinsic-metafunctions.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>