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+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<title>Struct template unexpr</title>
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+</div>
+<div class="refentry">
+<a name="boost.proto.unexpr"></a><div class="titlepage"></div>
+<div class="refnamediv">
+<h2><span class="refentrytitle">Struct template unexpr</span></h2>
+<p>boost::proto::unexpr &#8212; Lets you inherit the interface of an expression while hiding from Proto the fact that
+ the type is a Proto expression.</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: &lt;<a class="link" href="../../proto/reference.html#header.boost.proto.expr_hpp" title="Header &lt;boost/proto/expr.hpp&gt;">boost/proto/expr.hpp</a>&gt;
+
+</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">&gt;</span>
+<span class="keyword">struct</span> <a class="link" href="unexpr.html" title="Struct template unexpr">unexpr</a> <span class="special">:</span> <span class="keyword"></span> Expr <span class="special">{</span>
+ <span class="comment">// <a class="link" href="unexpr.html#boost.proto.unexprconstruct-copy-destruct">construct/copy/destruct</a></span>
+ <a class="link" href="unexpr.html#id1496708-bb"><span class="identifier">unexpr</span></a><span class="special">(</span><span class="identifier">Expr</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+<span class="special">}</span><span class="special">;</span></pre></div>
+<div class="refsect1">
+<a name="id2723001"></a><h2>Description</h2>
+<p>
+ For an expression type <code class="computeroutput">E</code>,
+ <code class="computeroutput">
+ <a class="link" href="is_expr.html" title="Struct template is_expr">proto::is_expr</a>&lt;E&gt;::value
+ </code> is <code class="computeroutput">true</code>, but
+ <code class="computeroutput">
+ <a class="link" href="is_expr.html" title="Struct template is_expr">proto::is_expr</a>&lt;proto::unexpr&lt;E&gt; &gt;::value
+ </code> is <code class="computeroutput">false</code>.
+ </p>
+<div class="refsect2">
+<a name="id2723056"></a><h3>
+<a name="boost.proto.unexprconstruct-copy-destruct"></a><code class="computeroutput">unexpr</code>
+ public
+ construct/copy/destruct</h3>
+<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><pre class="literallayout"><a name="id1496708-bb"></a><span class="identifier">unexpr</span><span class="special">(</span><span class="identifier">Expr</span> <span class="keyword">const</span> <span class="special">&amp;</span> expr<span class="special">)</span><span class="special">;</span></pre></li></ol></div>
+</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 &#169; 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>
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