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diff --git a/doc/html/boost/type_erasure/any_cast_idp758556752.html b/doc/html/boost/type_erasure/any_cast_idp758556752.html new file mode 100644 index 0000000000..f39b8d1c8b --- /dev/null +++ b/doc/html/boost/type_erasure/any_cast_idp758556752.html @@ -0,0 +1,93 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> +<title>Function any_cast</title> +<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> +<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> +<link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> +<link rel="up" href="../../boost_typeerasure/reference.html#header.boost.type_erasure.any_cast_hpp" title="Header <boost/type_erasure/any_cast.hpp>"> +<link rel="prev" href="any_Concept___idp758446800.html" title="Class template any<Concept, T &&>"> +<link rel="next" href="dynamic_binding.html" title="Class template dynamic_binding"> +</head> +<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> +<table cellpadding="2" width="100%"><tr> +<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td> +<td align="center"><a href="../../../../index.html">Home</a></td> +<td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td> +<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> +<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> +<td align="center"><a href="../../../../more/index.htm">More</a></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="any_Concept___idp758446800.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../boost_typeerasure/reference.html#header.boost.type_erasure.any_cast_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="dynamic_binding.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> +</div> +<div class="refentry"> +<a name="boost.type_erasure.any_cast_idp758556752"></a><div class="titlepage"></div> +<div class="refnamediv"> +<h2><span class="refentrytitle">Function any_cast</span></h2> +<p>boost::type_erasure::any_cast</p> +</div> +<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> +<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../boost_typeerasure/reference.html#header.boost.type_erasure.any_cast_hpp" title="Header <boost/type_erasure/any_cast.hpp>">boost/type_erasure/any_cast.hpp</a>> + +</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> Concept<span class="special">,</span> <span class="keyword">typename</span> Tag<span class="special">></span> + <span class="identifier">T</span> <span class="identifier">any_cast</span><span class="special">(</span><a class="link" href="../any.html" title="Class any">any</a><span class="special"><</span> <span class="identifier">Concept</span><span class="special">,</span> <span class="identifier">Tag</span> <span class="special">></span> <span class="special">&</span> arg<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> Concept<span class="special">,</span> <span class="keyword">typename</span> Tag<span class="special">></span> + <span class="identifier">T</span> <span class="identifier">any_cast</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../any.html" title="Class any">any</a><span class="special"><</span> <span class="identifier">Concept</span><span class="special">,</span> <span class="identifier">Tag</span> <span class="special">></span> <span class="special">&</span> arg<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> Concept<span class="special">,</span> <span class="keyword">typename</span> Tag<span class="special">></span> + <span class="identifier">T</span> <span class="identifier">any_cast</span><span class="special">(</span><a class="link" href="../any.html" title="Class any">any</a><span class="special"><</span> <span class="identifier">Concept</span><span class="special">,</span> <span class="identifier">Tag</span> <span class="special">></span> <span class="special">*</span> arg<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> Concept<span class="special">,</span> <span class="keyword">typename</span> Tag<span class="special">></span> + <span class="identifier">T</span> <span class="identifier">any_cast</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../any.html" title="Class any">any</a><span class="special"><</span> <span class="identifier">Concept</span><span class="special">,</span> <span class="identifier">Tag</span> <span class="special">></span> <span class="special">*</span> arg<span class="special">)</span><span class="special">;</span></pre></div> +<div class="refsect1"> +<a name="idp564984624"></a><h2>Description</h2> +<p>Attempts to extract the object that <code class="computeroutput">arg</code> holds. If casting to a pointer fails, <code class="computeroutput"><a class="link" href="any_cast_idp758556752.html" title="Function any_cast">any_cast</a></code> returns a null pointer. Casting to <code class="computeroutput">void*</code> always succeeds and returns the address of stored object.</p> +<pre class="programlisting"><span class="identifier">any</span><span class="special"><</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">typeid_</span><span class="special"><</span><span class="special">></span><span class="special">,</span> <span class="identifier">copy_constructible</span><span class="special"><</span><span class="special">></span> <span class="special">></span> <span class="special">></span> <span class="identifier">x</span><span class="special">(</span><span class="number">1</span><span class="special">)</span><span class="special">;</span> +<span class="identifier">any_cast</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span><span class="special">(</span><span class="identifier">x</span><span class="special">)</span><span class="special">;</span> <span class="comment">// returns 1</span> +<span class="identifier">any_cast</span><span class="special"><</span><span class="keyword">int</span><span class="special">&</span><span class="special">></span><span class="special">(</span><span class="identifier">x</span><span class="special">)</span><span class="special">;</span> <span class="comment">// returns a reference to the contents of x</span> +<span class="identifier">any_cast</span><span class="special"><</span><span class="keyword">double</span><span class="special">></span><span class="special">(</span><span class="identifier">x</span><span class="special">)</span><span class="special">;</span> <span class="comment">// throws bad_any_cast</span> +<span class="identifier">any_cast</span><span class="special"><</span><span class="keyword">int</span><span class="special">*</span><span class="special">></span><span class="special">(</span><span class="special">&</span><span class="identifier">x</span><span class="special">)</span><span class="special">;</span> <span class="comment">// returns a pointer to the contents of x</span> +<span class="identifier">any_cast</span><span class="special"><</span><span class="keyword">void</span><span class="special">*</span><span class="special">></span><span class="special">(</span><span class="special">&</span><span class="identifier">x</span><span class="special">)</span><span class="special">;</span> <span class="comment">// returns a pointer to the contents of x</span> +<span class="identifier">any_cast</span><span class="special"><</span><span class="keyword">double</span><span class="special">*</span><span class="special">></span><span class="special">(</span><span class="special">&</span><span class="identifier">x</span><span class="special">)</span><span class="special">;</span> <span class="comment">// returns NULL</span> +</pre> +<p> + +</p> +<div class="variablelist"><table border="0" class="variablelist compact"> +<colgroup> +<col align="left" valign="top"> +<col> +</colgroup> +<tbody> +<tr> +<td><p><span class="term">Requires:</span></p></td> +<td> +<p>if <code class="computeroutput">arg</code> is a pointer, <code class="computeroutput">T</code> must be a pointer type. </p> +<p><code class="computeroutput">Concept</code> must contain typeid_<code class="computeroutput"></code><Tag>.</p> +</td> +</tr> +<tr> +<td><p><span class="term">Throws:</span></p></td> +<td> +<a class="link" href="../bad_any_cast.html" title="Class bad_any_cast">bad_any_cast</a> if <code class="computeroutput">arg</code> doesn't contain an object of type <code class="computeroutput">T</code> and we're casting to a value or reference. </td> +</tr> +</tbody> +</table></div> +</div> +</div> +<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> +<td align="left"></td> +<td align="right"><div class="copyright-footer">Copyright © 2011-2013 Steven Watanabe<p> + Distributed under the Boost Software License, Version 1.0. (See accompanying + 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>) + </p> +</div></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="any_Concept___idp758446800.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../boost_typeerasure/reference.html#header.boost.type_erasure.any_cast_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="dynamic_binding.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> +</div> +</body> +</html> |