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| <h2><span class="refentrytitle">Macro BOOST_TYPE_ERASURE_MEMBER</span></h2> |
| <p>BOOST_TYPE_ERASURE_MEMBER — Defines a primitive concept for a member function. </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: <<a class="link" href="boost_typeerasure/reference.html#header.boost.type_erasure.member_hpp" title="Header <boost/type_erasure/member.hpp>">boost/type_erasure/member.hpp</a>> |
| |
| </span>BOOST_TYPE_ERASURE_MEMBER(qualified_name, member, N)</pre></div> |
| <div class="refsect1"> |
| <a name="idp474306400"></a><h2>Description</h2> |
| <p> |
| The declaration of the concept is </p> |
| <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">Sig</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span> <span class="special">=</span> <span class="identifier">_self</span><span class="special">></span> |
| <span class="keyword">struct</span> <span class="special">::</span><span class="identifier">namespace1</span><span class="special">::</span><span class="identifier">namespace2</span><span class="special">::</span><span class="special">...</span><span class="special">::</span><span class="identifier">concept_name</span><span class="special">;</span> |
| </pre> |
| <p> where Sig is a function type giving the signature of the member function, and T is the object type. T may be const-qualified for const member functions.</p> |
| <p>This macro can only be used in the global namespace.</p> |
| <p>Example:</p> |
| <pre class="programlisting"><span class="identifier">BOOST_TYPE_ERASURE_MEMBER</span><span class="special">(</span><span class="special">(</span><span class="identifier">boost</span><span class="special">)</span><span class="special">(</span><span class="identifier">has_push_back</span><span class="special">)</span><span class="special">,</span> <span class="identifier">push_back</span><span class="special">,</span> <span class="number">1</span><span class="special">)</span> |
| <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_push_back</span><span class="special"><</span><span class="keyword">void</span><span class="special">(</span><span class="keyword">int</span><span class="special">)</span><span class="special">,</span> <span class="identifier">_self</span><span class="special">></span> <span class="identifier">push_back_concept</span><span class="special">;</span> |
| </pre> |
| <div class="note"><table border="0" summary="Note"> |
| <tr> |
| <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../doc/src/images/note.png"></td> |
| <th align="left">Note</th> |
| </tr> |
| <tr><td align="left" valign="top"><p>In C++11 the argument N is ignored and may be omitted. BOOST_TYPE_ERASURE_MEMBER will always define a variadic concept. </p></td></tr> |
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| <p> |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist compact"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody><tr> |
| <td><p><span class="term">Parameters:</span></p></td> |
| <td><div class="variablelist"><table border="0" class="variablelist compact"> |
| <colgroup> |
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| <td><p><span class="term"><code class="computeroutput">N</code></span></p></td> |
| <td><p>is the number of arguments of the function.</p></td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><code class="computeroutput">member</code></span></p></td> |
| <td><p>is the name of the member function. </p></td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><code class="computeroutput">qualified_name</code></span></p></td> |
| <td><p>should be a preprocessor sequence of the form (namespace1)(namespace2)...(concept_name). </p></td> |
| </tr> |
| </tbody> |
| </table></div></td> |
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| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2011-2013 Steven Watanabe<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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