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<div class="titlepage"><div><div><h3 class="title">
<a name="boost_typetraits.reference.has_nothrow_assign"></a><a class="link" href="has_nothrow_assign.html" title="has_nothrow_assign"> has_nothrow_assign</a>
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<pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span>
<span class="keyword">struct</span> <span class="identifier">has_nothrow_assign</span> <span class="special">:</span> <span class="keyword">public</span> <em class="replaceable"><code><a class="link" href="integral_constant.html" title="integral_constant">true_type</a>-or-<a class="link" href="integral_constant.html" title="integral_constant">false_type</a></code></em> <span class="special">{};</span>
</pre>
<p>
<span class="bold"><strong>Inherits:</strong></span> If T is a (possibly cv-qualified)
type with a non-throwing assignment-operator then inherits from <a class="link" href="integral_constant.html" title="integral_constant">true_type</a>,
otherwise inherits from <a class="link" href="integral_constant.html" title="integral_constant">false_type</a>.
Type <code class="computeroutput"><span class="identifier">T</span></code> must be a complete
type.
</p>
<p>
<span class="bold"><strong>Compiler Compatibility:</strong></span> If the compiler
does not support partial-specialization of class templates, then this template
can not be used with function types.
</p>
<p>
Without some (as yet unspecified) help from the compiler, <code class="computeroutput"><span class="identifier">has_nothrow_assign</span></code>
will never report that a class or struct has a non-throwing assignment-operator;
this is always safe, if possibly sub-optimal. Currently (May 2005) only Visual
C++ 8 has the necessary compiler support to ensure that this trait "just
works".
</p>
<p>
<span class="bold"><strong>Header:</strong></span> <code class="computeroutput"> <span class="preprocessor">#include</span>
<span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_nothrow_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>
or <code class="computeroutput"> <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>
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Marcus, Itay Maman, John Maddock, Alexander Nasonov, Thorsten Ottosen, Robert
Ramey and Jeremy Siek<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
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