1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>HolderGenerator</title> 5<link rel="stylesheet" href="../../boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../index.html" title="Boost.Python Reference Manual"> 8<link rel="up" href="../concepts.html" title="Chapter 1. Concepts"> 9<link rel="prev" href="extractor.html" title="Extractor"> 10<link rel="next" href="resultconverter.html" title="ResultConverter"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr><td valign="top"><img alt="" width="" height="" src="../../images/boost.png"></td></tr></table> 14<hr> 15<div class="spirit-nav"> 16<a accesskey="p" href="extractor.html"><img src="../../images/prev.png" alt="Prev"></a><a accesskey="u" href="../concepts.html"><img src="../../images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../images/home.png" alt="Home"></a><a accesskey="n" href="resultconverter.html"><img src="../../images/next.png" alt="Next"></a> 17</div> 18<div class="section"> 19<div class="titlepage"><div><div><h2 class="title" style="clear: both"> 20<a name="concepts.holdergenerator"></a><a class="link" href="holdergenerator.html" title="HolderGenerator">HolderGenerator</a> 21</h2></div></div></div> 22<div class="toc"><dl class="toc"> 23<dt><span class="section"><a href="holdergenerator.html#concepts.holdergenerator.introduction">Introduction</a></span></dt> 24<dt><span class="section"><a href="holdergenerator.html#concepts.holdergenerator.concept_requirements">Concept 25 Requirements</a></span></dt> 26</dl></div> 27<div class="section"> 28<div class="titlepage"><div><div><h3 class="title"> 29<a name="concepts.holdergenerator.introduction"></a><a class="link" href="holdergenerator.html#concepts.holdergenerator.introduction" title="Introduction">Introduction</a> 30</h3></div></div></div> 31<p> 32 A HolderGenerator is a unary metafunction class which returns types suitable 33 for holding instances of its argument in a wrapped C++ class instance. 34 </p> 35</div> 36<div class="section"> 37<div class="titlepage"><div><div><h3 class="title"> 38<a name="concepts.holdergenerator.concept_requirements"></a><a class="link" href="holdergenerator.html#concepts.holdergenerator.concept_requirements" title="Concept Requirements">Concept 39 Requirements</a> 40</h3></div></div></div> 41<p> 42 In the table below, <code class="computeroutput"><span class="identifier">G</span></code> denotes 43 an type which models <code class="computeroutput"><span class="identifier">HolderGenerator</span></code>, 44 and <code class="computeroutput"><span class="identifier">X</span></code> denotes a class type. 45 </p> 46<div class="informaltable"><table class="table"> 47<colgroup> 48<col> 49<col> 50</colgroup> 51<thead><tr> 52<th> 53 <p> 54 Expression 55 </p> 56 </th> 57<th> 58 <p> 59 Requirements 60 </p> 61 </th> 62</tr></thead> 63<tbody><tr> 64<td> 65 <p> 66 <code class="computeroutput"><span class="identifier">G</span><span class="special">::</span><span class="identifier">apply</span><span class="special"><</span><span class="identifier">X</span><span class="special">>::</span><span class="identifier">type</span></code> 67 </p> 68 </td> 69<td> 70 <p> 71 A concrete subclass of <code class="computeroutput"><span class="identifier">instance_holder</span></code> 72 which can hold objects of type <code class="computeroutput"><span class="identifier">X</span></code>. 73 </p> 74 </td> 75</tr></tbody> 76</table></div> 77</div> 78</div> 79<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 80<td align="left"></td> 81<td align="right"><div class="copyright-footer">Copyright © 2002-2005, 2015 David Abrahams, Stefan Seefeld<p> 82 Distributed under the Boost Software License, Version 1.0. (See accompanying 83 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a> 84 </p> 85</div></td> 86</tr></table> 87<hr> 88<div class="spirit-nav"> 89<a accesskey="p" href="extractor.html"><img src="../../images/prev.png" alt="Prev"></a><a accesskey="u" href="../concepts.html"><img src="../../images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../images/home.png" alt="Home"></a><a accesskey="n" href="resultconverter.html"><img src="../../images/next.png" alt="Next"></a> 90</div> 91</body> 92</html> 93
