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| <h2><span class="refentrytitle">Concept PolymorphicFunctionObject</span></h2> |
| <p>PolymorphicFunctionObject</p> |
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| <div class="refsect1"> |
| <a name="id2457328"></a><h2>Description</h2> |
| <p> |
| A type that can be called and that follows the TR1 ResultOf |
| protocol for return type calculation. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a name="id2457337"></a><h2>Associated types</h2> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"> |
| <p><span class="bold"><strong>result_type</strong></span></p> |
| <pre class="literallayout">result_of<Fn(A0,...An)>::type</pre> |
| <p> |
| </p> |
| <p>The result of calling the Polymorphic Function Object.</p> |
| <p> |
| </p> |
| </li></ul></div> |
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| <div class="refsect1"> |
| <a name="id2457362"></a><h2>Notation</h2> |
| <div class="variablelist"><dl> |
| <dt><span class="term">Fn</span></dt> |
| <dd>A type playing the role of polymorphic-function-object-type in the <a class="link" href="PolymorphicFunctionObject.html" title="Concept PolymorphicFunctionObject">PolymorphicFunctionObject</a> concept.</dd> |
| <dt><span class="term"><code class="varname">fn</code></span></dt> |
| <dd>Object of type Fn</dd> |
| <dt><span class="term"><code class="varname">a0,...an</code></span></dt> |
| <dd>Object of type A0,...An</dd> |
| </dl></div> |
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| <div class="refsect1"> |
| <a name="id2457398"></a><h2>Valid expressions</h2> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th>Name</th> |
| <th>Expression</th> |
| <th>Type</th> |
| <th>Semantics</th> |
| </tr></thead> |
| <tbody><tr> |
| <td><p>Function Call</p></td> |
| <td><p>fn(a0,...an)</p></td> |
| <td><p><span class="type">result_type</span></p></td> |
| <td><p>Calls the function object.</p></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="id2457435"></a><h2>Models</h2> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><span class="simplelist"><span class="type">std::plus<int></span></span></li></ul></div> |
| </div> |
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| <td align="right"><div class="copyright-footer">Copyright © 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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