1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>Struct template eval</title> 6<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> 7<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 8<link rel="home" href="../../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> 9<link rel="up" href="../../../proto/reference.html#header.boost.proto.eval_hpp" title="Header <boost/proto/eval.hpp>"> 10<link rel="prev" href="../functional/eval/resul_1_3_33_5_8_2_1_1_1_3.html" title="Struct template result<This(Expr, Context)>"> 11<link rel="next" href="../eval.html" title="Function eval"> 12</head> 13<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 14<table cellpadding="2" width="100%"><tr> 15<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td> 16<td align="center"><a href="../../../../../index.html">Home</a></td> 17<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td> 18<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 19<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 20<td align="center"><a href="../../../../../more/index.htm">More</a></td> 21</tr></table> 22<hr> 23<div class="spirit-nav"> 24<a accesskey="p" href="../functional/eval/resul_1_3_33_5_8_2_1_1_1_3.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../proto/reference.html#header.boost.proto.eval_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="../eval.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="refentry"> 27<a name="boost.proto.result_of.eval"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Struct template eval</span></h2> 30<p>boost::proto::result_of::eval — A metafunction for calculating the return type of <code class="computeroutput"> 31 <a class="link" href="../eval.html" title="Function eval">proto::eval()</a></code> given a 32 certain <code class="computeroutput">Expr</code> and <code class="computeroutput">Context</code> types.</p> 33</div> 34<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 35<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.eval_hpp" title="Header <boost/proto/eval.hpp>">boost/proto/eval.hpp</a>> 36 37</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <a class="link" href="../../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> Context<span class="special">></span> 38<span class="keyword">struct</span> <a class="link" href="eval.html" title="Struct template eval">eval</a> <span class="special">{</span> 39 <span class="comment">// types</span> 40 <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">Context</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">eval</span><span class="special"><</span> <span class="identifier">Expr</span> <span class="special">></span><span class="special">::</span><span class="identifier">result_type</span> <a name="boost.proto.result_of.eval.type"></a><span class="identifier">type</span><span class="special">;</span> 41<span class="special">}</span><span class="special">;</span></pre></div> 42</div> 43<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 44<td align="left"></td> 45<td align="right"><div class="copyright-footer">Copyright © 2008 Eric Niebler<p> 46 Distributed under the Boost Software License, Version 1.0. (See accompanying 47 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>) 48 </p> 49</div></td> 50</tr></table> 51<hr> 52<div class="spirit-nav"> 53<a accesskey="p" href="../functional/eval/resul_1_3_33_5_8_2_1_1_1_3.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../proto/reference.html#header.boost.proto.eval_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="../eval.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 54</div> 55</body> 56</html> 57
