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diff --git a/doc/html/boost/proto/is_proto_expr.html b/doc/html/boost/proto/is_proto_expr.html new file mode 100755 index 0000000000..5a3781efe0 --- /dev/null +++ b/doc/html/boost/proto/is_proto_expr.html @@ -0,0 +1,79 @@ +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> +<title>Struct is_proto_expr</title> +<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> +<meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> +<link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> +<link rel="up" href="../../proto/reference.html#header.boost.proto.extends_hpp" title="Header <boost/proto/extends.hpp>"> +<link rel="prev" href="unexpr.html" title="Struct template unexpr"> +<link rel="next" href="extends.html" title="Struct template extends"> +</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="unexpr.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../proto/reference.html#header.boost.proto.extends_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="extends.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> +</div> +<div class="refentry"> +<a name="boost.proto.is_proto_expr"></a><div class="titlepage"></div> +<div class="refnamediv"> +<h2><span class="refentrytitle">Struct is_proto_expr</span></h2> +<p>boost::proto::is_proto_expr — Empty type to be used as a dummy template parameter of POD expression wrappers. It allows + argument-dependent lookup to find Proto's operator overloads.</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="../../proto/reference.html#header.boost.proto.extends_hpp" title="Header <boost/proto/extends.hpp>">boost/proto/extends.hpp</a>> + +</span> +<span class="keyword">struct</span> <a class="link" href="is_proto_expr.html" title="Struct is_proto_expr">is_proto_expr</a> <span class="special">{</span> +<span class="special">}</span><span class="special">;</span></pre></div> +<div class="refsect1"> +<a name="id2723415"></a><h2>Description</h2> +<p> + <code class="computeroutput">proto::is_proto_expr</code> allows argument-dependent lookup to find Proto's operator overloads. For example: + </p> +<p> + </p> +<pre class="programlisting"> <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">Dummy</span> <span class="special">=</span> <a class="link" href="is_proto_expr.html" title="Struct is_proto_expr">proto::is_proto_expr</a><span class="special">></span> + <span class="keyword">struct</span> <span class="identifier">my_terminal</span> + <span class="special">{</span> + <a class="link" href="../../BOOST_PROTO_BASIC_EXTENDS.html" title="Macro BOOST_PROTO_BASIC_EXTENDS">BOOST_PROTO_BASIC_EXTENDS</a><span class="special">(</span> + <span class="keyword">typename</span> <a class="link" href="terminal.html" title="Struct template terminal">proto::terminal</a><span class="special"><</span><span class="identifier">T</span><span class="special">></span><span class="special">::</span><span class="identifier">type</span> + <span class="special">,</span> <span class="identifier">my_terminal</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> + <span class="special">,</span> <a class="link" href="default_domain.html" title="Struct default_domain">proto::default_domain</a> + <span class="special">)</span> + <span class="special">}</span><span class="special">;</span> + + <span class="comment">// ...</span> + <span class="identifier">my_terminal</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">_1</span><span class="special">,</span> <span class="identifier">_2</span><span class="special">;</span> + <span class="identifier">_1</span> <span class="special">+</span> <span class="identifier">_2</span><span class="special">;</span> <span class="comment">// OK, uses proto::operator+</span></pre> +<p> + </p> +<p> + Without the second <code class="computeroutput">Dummy</code> template parameter, Proto's operator overloads + would not be considered by name lookup. + </p> +</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 © 2008 Eric Niebler<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="unexpr.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../proto/reference.html#header.boost.proto.extends_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="extends.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> +</div> +</body> +</html> |