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-<h2><span class="refentrytitle">Macro BOOST_PROTO_EXTENDS_USING_ASSIGN_NON_DEPENDENT</span></h2>
-<p>BOOST_PROTO_EXTENDS_USING_ASSIGN_NON_DEPENDENT &#8212; For exposing in classes that inherit from
- <code class="computeroutput"><a class="link" href="boost/proto/extends.html" title="Struct template extends">proto::extends&lt;&gt;</a></code>
- the overloaded assignment operators defined therein. Unlike the
- <code class="computeroutput"><a class="link" href="BOOST_PROTO__1_3_33_5_10_8.html" title="Macro BOOST_PROTO_EXTENDS_USING_ASSIGN">BOOST_PROTO_EXTENDS_USING_ASSIGN</a>()</code> macro,
- <code class="computeroutput">BOOST_PROTO_EXTENDS_USING_ASSIGN_NON_DEPENDENT()</code> is for use in non-dependent
- contexts.
- </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.extends_hpp" title="Header &lt;boost/proto/extends.hpp&gt;">boost/proto/extends.hpp</a>&gt;
-
-</span>BOOST_PROTO_EXTENDS_USING_ASSIGN_NON_DEPENDENT(Derived)</pre></div>
-<div class="refsect1">
-<a name="id-1.3.33.5.12.13.4"></a><h2>Description</h2>
-<p>
- The standard usage of
- <code class="computeroutput"><a class="link" href="boost/proto/extends.html" title="Struct template extends">proto::extends&lt;&gt;</a></code>
- is to define a class template that inherits from it. The derived class template automatically gets a
- compiler-generated assignment operator that hides the ones defined in
- <code class="computeroutput"><a class="link" href="boost/proto/extends.html" title="Struct template extends">proto::extends&lt;&gt;</a></code>.
- Using <code class="computeroutput">BOOST_PROTO_EXTENDS_USING_ASSIGN()</code> in the derived class solves this problem.
- </p>
-<p>
- However, if the expression extension is an ordinary class and not a class template, the usage of
- <code class="computeroutput">BOOST_PROTO_EXTENDS_USING_ASSIGN()</code> is in a so-called non-dependent context. In plain English,
- it means it is illegal to use <code class="computeroutput">typename</code> in some places where it is required in a class template.
- In those cases, you should use <code class="computeroutput">BOOST_PROTO_EXTENDS_USING_ASSIGN_NON_DEPENDENT()</code> instead.
- </p>
-<p>
- See also:
- </p>
-<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
-<li class="listitem"><code class="computeroutput"><a class="link" href="boost/proto/extends.html" title="Struct template extends">proto::extends&lt;&gt;</a></code></li>
-<li class="listitem"><code class="computeroutput"><a class="link" href="BOOST_PROTO__1_3_33_5_10_8.html" title="Macro BOOST_PROTO_EXTENDS_USING_ASSIGN">BOOST_PROTO_EXTENDS_USING_ASSIGN</a>()</code></li>
-</ul></div>
-<p>
- </p>
-</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>
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