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| <div class="refentry"> |
| <a name="boost.log.type_dispatcher"></a><div class="titlepage"></div> |
| <div class="refnamediv"> |
| <h2><span class="refentrytitle">Class type_dispatcher</span></h2> |
| <p>boost::log::type_dispatcher — A type dispatcher interface. </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: <<a class="link" href="../../utilities.html#header.boost.log.utility.type_dispatch.type_dispatcher_hpp" title="Header <boost/log/utility/type_dispatch/type_dispatcher.hpp>">boost/log/utility/type_dispatch/type_dispatcher.hpp</a>> |
| |
| </span> |
| <span class="keyword">class</span> <a class="link" href="type_dispatcher.html" title="Class type_dispatcher">type_dispatcher</a> <span class="special">{</span> |
| <span class="keyword">public</span><span class="special">:</span> |
| <span class="comment">// member classes/structs/unions</span> |
| <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">></span> |
| <span class="keyword">class</span> <a class="link" href="type_dispatcher/callback.html" title="Class template callback">callback</a> <span class="special">{</span> |
| <span class="keyword">public</span><span class="special">:</span> |
| |
| <span class="comment">// <a class="link" href="type_dispatcher/callback.html#idp47011184-bb">public member functions</a></span> |
| <span class="keyword">void</span> <a class="link" href="type_dispatcher/callback.html#idp47011744-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">T</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <span class="keyword">explicit</span> <a class="link" href="type_dispatcher/callback.html#idp47014720-bb"><span class="keyword">operator</span> <span class="keyword">bool</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span> |
| <span class="keyword">bool</span> <a class="link" href="type_dispatcher/callback.html#idp47016576-bb"><span class="keyword">operator</span><span class="special">!</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span> |
| <span class="special">}</span><span class="special">;</span> |
| <span class="comment">// <a class="link" href="type_dispatcher.html#boost.log.type_dispatcherconstruct-copy-destruct">construct/copy/destruct</a></span> |
| <span class="keyword">explicit</span> <a class="link" href="type_dispatcher.html#idp47019056-bb"><span class="identifier">type_dispatcher</span></a><span class="special">(</span><span class="identifier">get_callback_impl_type</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span> |
| <a class="link" href="type_dispatcher.html#idp47021296-bb"><span class="identifier">type_dispatcher</span></a><span class="special">(</span><a class="link" href="type_dispatcher.html" title="Class type_dispatcher">type_dispatcher</a> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span> <span class="special">=</span> <span class="keyword">default</span><span class="special">;</span> |
| <a class="link" href="type_dispatcher.html" title="Class type_dispatcher">type_dispatcher</a> <span class="special">&</span> <a class="link" href="type_dispatcher.html#idp47022832-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><a class="link" href="type_dispatcher.html" title="Class type_dispatcher">type_dispatcher</a> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span> <span class="special">=</span> <span class="keyword">default</span><span class="special">;</span> |
| <a class="link" href="type_dispatcher.html#idp47021008-bb"><span class="special">~</span><span class="identifier">type_dispatcher</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="type_dispatcher.html#idp47024944-bb">public member functions</a></span> |
| <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">></span> <a class="link" href="type_dispatcher/callback.html" title="Class template callback">callback</a><span class="special"><</span> <span class="identifier">T</span> <span class="special">></span> <a class="link" href="type_dispatcher.html#idp47025504-bb"><span class="identifier">get_callback</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> |
| <span class="special">}</span><span class="special">;</span></pre></div> |
| <div class="refsect1"> |
| <a name="idp136628800"></a><h2>Description</h2> |
| <p>All type dispatchers support this interface. It is used to acquire the visitor interface for the requested type. </p> |
| <div class="refsect2"> |
| <a name="idp136629600"></a><h3> |
| <a name="boost.log.type_dispatcherconstruct-copy-destruct"></a><code class="computeroutput">type_dispatcher</code> |
| public |
| construct/copy/destruct</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">explicit</span> <a name="idp47019056-bb"></a><span class="identifier">type_dispatcher</span><span class="special">(</span><span class="identifier">get_callback_impl_type</span> get_callback_impl<span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre> |
| <p>Initializing constructor </p> |
| </li> |
| <li class="listitem"><pre class="literallayout"><a name="idp47021296-bb"></a><span class="identifier">type_dispatcher</span><span class="special">(</span><a class="link" href="type_dispatcher.html" title="Class type_dispatcher">type_dispatcher</a> <span class="keyword">const</span> <span class="special">&</span> that<span class="special">)</span> <span class="special">=</span> <span class="keyword">default</span><span class="special">;</span></pre></li> |
| <li class="listitem"><pre class="literallayout"><a class="link" href="type_dispatcher.html" title="Class type_dispatcher">type_dispatcher</a> <span class="special">&</span> <a name="idp47022832-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><a class="link" href="type_dispatcher.html" title="Class type_dispatcher">type_dispatcher</a> <span class="keyword">const</span> <span class="special">&</span> that<span class="special">)</span> <span class="special">=</span> <span class="keyword">default</span><span class="special">;</span></pre></li> |
| <li class="listitem"><pre class="literallayout"><a name="idp47021008-bb"></a><span class="special">~</span><span class="identifier">type_dispatcher</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li> |
| </ol></div> |
| </div> |
| <div class="refsect2"> |
| <a name="idp136658464"></a><h3> |
| <a name="idp47024944-bb"></a><code class="computeroutput">type_dispatcher</code> public member functions</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"> |
| <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">></span> <a class="link" href="type_dispatcher/callback.html" title="Class template callback">callback</a><span class="special"><</span> <span class="identifier">T</span> <span class="special">></span> <a name="idp47025504-bb"></a><span class="identifier">get_callback</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> |
| <p>The method requests a callback for the value of type <code class="computeroutput">T</code> </p> |
| <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">Returns:</span></p></td> |
| <td><p>The type-specific callback or an empty value, if the type is not supported </p></td> |
| </tr></tbody> |
| </table></div> |
| </li></ol></div> |
| </div> |
| </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 © 2007-2015 Andrey |
| Semashev<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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