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<h2><span class="refentrytitle">Struct template is_domain</span></h2>
<p>boost::proto::is_domain</p>
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<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.domain_hpp" title="Header &lt;boost/proto/domain.hpp&gt;">boost/proto/domain.hpp</a>&gt;
</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span>
<span class="keyword">struct</span> <a class="link" href="is_domain.html" title="Struct template is_domain">is_domain</a> <span class="special">:</span> <span class="keyword"></span> mpl::bool_&lt; <em class="replaceable"><code>true-or-false</code></em> &gt; <span class="special">{</span>
<span class="special">}</span><span class="special">;</span></pre></div>
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<a name="id2276464"></a><h2>Description</h2>
<p>
A metafunction that returns <code class="computeroutput">mpl::true_</code> if the type
<code class="computeroutput">T</code> is the type of a Proto domain;
<code class="computeroutput">mpl::false_</code> otherwise. If <code class="computeroutput">T</code>
inherits from <code class="computeroutput"><a class="link" href="domain.html" title="Struct template domain">proto::domain&lt;&gt;</a></code>,
<code class="computeroutput">is_domain&lt;T&gt;</code> is <code class="computeroutput">mpl::true_</code>.
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<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>)
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