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 wants_basic_expr</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.generate_hpp" title="Header <boost/proto/generate.hpp>"> 10<link rel="prev" href="use_basic_expr.html" title="Struct template use_basic_expr"> 11<link rel="next" href="literal.html" title="Struct template literal"> 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="use_basic_expr.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../proto/reference.html#header.boost.proto.generate_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="literal.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="refentry"> 27<a name="boost.proto.wants_basic_expr"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Struct template wants_basic_expr</span></h2> 30<p>boost::proto::wants_basic_expr</p> 31</div> 32<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 33<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.generate_hpp" title="Header <boost/proto/generate.hpp>">boost/proto/generate.hpp</a>> 34 35</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Generator<span class="special">></span> 36<span class="keyword">struct</span> <a class="link" href="wants_basic_expr.html" title="Struct template wants_basic_expr">wants_basic_expr</a> <span class="special">:</span> <span class="keyword"></span> mpl::bool_< <em class="replaceable"><code>true-or-false</code></em> > <span class="special">{</span> 37<span class="special">}</span><span class="special">;</span></pre></div> 38<div class="refsect1"> 39<a name="id-1.3.33.5.31.11.4"></a><h2>Description</h2> 40<p> 41 A Boolean metafunction that tests a generator to see whether 42 it would prefer to be passed instances of 43 <code class="computeroutput"><a class="link" href="basic_expr.html" title="Struct template basic_expr">proto::basic_expr</a><></code> rather than 44 <code class="computeroutput"><a class="link" href="expr.html" title="Struct template expr">proto::expr</a><></code>. 45 </p> 46</div> 47</div> 48<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 49<td align="left"></td> 50<td align="right"><div class="copyright-footer">Copyright © 2008 Eric Niebler<p> 51 Distributed under the Boost Software License, Version 1.0. (See accompanying 52 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>) 53 </p> 54</div></td> 55</tr></table> 56<hr> 57<div class="spirit-nav"> 58<a accesskey="p" href="use_basic_expr.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../proto/reference.html#header.boost.proto.generate_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="literal.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 59</div> 60</body> 61</html> 62
