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: inherit_linearly</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="./inherit.html" class="navigation-link">Prev</a> <a href="./numeric-cast.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./inherit.html" class="navigation-link">Back</a> <a href="./numeric-cast.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./miscellaneous.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="./miscellaneous.html" class="navigation-link">Miscellaneous</a> / <a href="./inherit-linearly.html" class="navigation-link">inherit_linearly</a></td> </tr></table><div class="header-separator"></div> <div class="section" id="inherit-linearly"> <h1><a class="toc-backref" href="./miscellaneous.html#id1567">inherit_linearly</a></h1> <div class="section" id="id1172"> <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> <pre class="literal-block"> template< typename Types , typename Node , typename Root = <a href="./empty-base.html" class="identifier">empty_base</a> > struct <a href="./inherit-linearly.html" class="identifier">inherit_linearly</a> : <a href="./fold.html" class="identifier">fold</a><Types,Root,Node> { }; </pre> </div> <div class="section" id="id1173"> <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> <p>A convenience wrapper for <tt class="literal"><span class="pre"><a href="./fold.html" class="identifier">fold</a></span></tt> to use in the context of sequence-driven class composition. Returns the result the successive application of binary <tt class="literal"><span class="pre">Node</span></tt> to the result of the previous <tt class="literal"><span class="pre">Node</span></tt> invocation (<tt class="literal"><span class="pre">Root</span></tt> if it's the first call) and every type in the <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a> <tt class="literal"><span class="pre">Types</span></tt> in order.</p> </div> <div class="section" id="id1174"> <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> <pre class="literal-block"> #include <<a href="../../../../boost/mpl/inherit_linearly.hpp" class="header">boost/mpl/inherit_linearly.hpp</a>> </pre> </div> <div class="section" id="id1175"> <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3> <p><a class="reference internal" href="./metafunction.html">Metafunction</a></p> </div> <div class="section" id="id1176"> <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3> <table border="1" class="docutils table"> <colgroup> <col width="15%" /> <col width="32%" /> <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">Types</span></tt></td> <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td> <td>Types to inherit from.</td> </tr> <tr><td><tt class="literal"><span class="pre">Node</span></tt></td> <td>Binary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a></td> <td>A derivation metafunction.</td> </tr> <tr><td><tt class="literal"><span class="pre">Root</span></tt></td> <td>A class type</td> <td>A type to be placed at the root of the class hierarchy.</td> </tr> </tbody> </table> </div> <div class="section" id="id1177"> <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> <p>For any <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a> <tt class="literal"><span class="pre">types</span></tt>, binary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a> <tt class="literal"><span class="pre">node</span></tt>, and arbitrary class type <tt class="literal"><span class="pre">root</span></tt>:</p> <pre class="literal-block"> typedef <a href="./inherit-linearly.html" class="identifier">inherit_linearly</a><types,node,root>::type r; </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 type.</p> </td> </tr> <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first">Equivalent to</p> <pre class="last literal-block"> typedef <a href="./fold.html" class="identifier">fold</a><types,root,node>::type r; </pre> </td> </tr> </tbody> </table> </div> <div class="section" id="id1178"> <h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3> <p>Linear. Exactly <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><types>::value</span></tt> applications of <tt class="literal"><span class="pre">node</span></tt>.</p> </div> <div class="section" id="id1179"> <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> <pre class="literal-block"> template< typename T > struct tuple_field { T field; }; template< typename T > inline T& field(tuple_field<T>& t) { return t.field; } typedef <a href="./inherit-linearly.html" class="identifier">inherit_linearly</a>< <a href="./vector.html" class="identifier">vector</a><int,char const*,bool> , <a href="./inherit.html" class="identifier">inherit</a>< <a href="./placeholders.html" class="identifier">_1</a>, tuple_field<<a href="./placeholders.html" class="identifier">_2</a>> > >::type tuple; int main() { tuple t; field<int>(t) = -1; field<char const*>(t) = "text"; field<bool>(t) = false; std::cout << field<int>(t) << 'n' << field<char const*>(t) << 'n' << field<bool>(t) << 'n' ; } </pre> </div> <div class="section" id="id1180"> <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> <p><a class="reference internal" href="./metafunctions.html">Metafunctions</a>, <a class="reference internal" href="./algorithms.html">Algorithms</a>, <a class="reference internal" href="./inherit.html">inherit</a>, <a class="reference internal" href="./empty-base.html">empty_base</a>, <a class="reference internal" href="./fold.html">fold</a>, <a class="reference internal" href="./reverse-fold.html">reverse_fold</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="./inherit.html" class="navigation-link">Prev</a> <a href="./numeric-cast.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./inherit.html" class="navigation-link">Back</a> <a href="./numeric-cast.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./miscellaneous.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>