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| <a name="boost.log.attributes.attribute_value_impl"></a><div class="titlepage"></div> |
| <div class="refnamediv"> |
| <h2><span class="refentrytitle">Class template attribute_value_impl</span></h2> |
| <p>boost::log::attributes::attribute_value_impl — Basic attribute value implementation class. </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="../../../attributes.html#header.boost.log.attributes.attribute_value_impl_hpp" title="Header <boost/log/attributes/attribute_value_impl.hpp>">boost/log/attributes/attribute_value_impl.hpp</a>> |
| |
| </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="attribute_value_impl.html" title="Class template attribute_value_impl">attribute_value_impl</a> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">attribute_value</span><span class="special">::</span><span class="identifier">impl</span> <span class="special">{</span> |
| <span class="keyword">public</span><span class="special">:</span> |
| <span class="comment">// types</span> |
| <span class="keyword">typedef</span> <span class="identifier">T</span> <a name="boost.log.attributes.attribute_value_impl.value_type"></a><span class="identifier">value_type</span><span class="special">;</span> <span class="comment">// Value type. </span> |
| |
| <span class="comment">// <a class="link" href="attribute_value_impl.html#boost.log.attributes.attribute_value_implconstruct-copy-destruct">construct/copy/destruct</a></span> |
| <span class="keyword">explicit</span> <a class="link" href="attribute_value_impl.html#idp41775296-bb"><span class="identifier">attribute_value_impl</span></a><span class="special">(</span><span class="identifier">value_type</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">explicit</span> <a class="link" href="attribute_value_impl.html#idp41776992-bb"><span class="identifier">attribute_value_impl</span></a><span class="special">(</span><span class="identifier">value_type</span> <span class="special">&&</span><span class="special">)</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="attribute_value_impl.html#idp41766224-bb">public member functions</a></span> |
| <span class="keyword">virtual</span> <span class="keyword">bool</span> <a class="link" href="attribute_value_impl.html#idp41766784-bb"><span class="identifier">dispatch</span></a><span class="special">(</span><span class="identifier">type_dispatcher</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">virtual</span> <span class="identifier">type_info_wrapper</span> <a class="link" href="attribute_value_impl.html#idp41770928-bb"><span class="identifier">get_type</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <span class="identifier">value_type</span> <span class="keyword">const</span> <span class="special">&</span> <a class="link" href="attribute_value_impl.html#idp41773168-bb"><span class="identifier">get</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <span class="special">}</span><span class="special">;</span></pre></div> |
| <div class="refsect1"> |
| <a name="idp105733264"></a><h2>Description</h2> |
| <p>This class can be used as a boilerplate for simple attribute values. The class implements all needed interfaces of attribute values and allows to store a single value of the type specified as a template parameter. The stored value can be dispatched with type dispatching mechanism. </p> |
| <div class="refsect2"> |
| <a name="idp105734240"></a><h3> |
| <a name="boost.log.attributes.attribute_value_implconstruct-copy-destruct"></a><code class="computeroutput">attribute_value_impl</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="idp41775296-bb"></a><span class="identifier">attribute_value_impl</span><span class="special">(</span><span class="identifier">value_type</span> <span class="keyword">const</span> <span class="special">&</span> v<span class="special">)</span><span class="special">;</span></pre> |
| <p>Constructor with initialization of the stored value </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">explicit</span> <a name="idp41776992-bb"></a><span class="identifier">attribute_value_impl</span><span class="special">(</span><span class="identifier">value_type</span> <span class="special">&&</span> v<span class="special">)</span><span class="special">;</span></pre> |
| <p>Constructor with initialization of the stored value </p> |
| </li> |
| </ol></div> |
| </div> |
| <div class="refsect2"> |
| <a name="idp105749344"></a><h3> |
| <a name="idp41766224-bb"></a><code class="computeroutput">attribute_value_impl</code> public member functions</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">virtual</span> <span class="keyword">bool</span> <a name="idp41766784-bb"></a><span class="identifier">dispatch</span><span class="special">(</span><span class="identifier">type_dispatcher</span> <span class="special">&</span> dispatcher<span class="special">)</span><span class="special">;</span></pre> |
| <p>Attribute value dispatching method.</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">Parameters:</span></p></td> |
| <td><div class="variablelist"><table border="0" class="variablelist compact"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody><tr> |
| <td><p><span class="term"><code class="computeroutput">dispatcher</code></span></p></td> |
| <td><p>The dispatcher that receives the stored value</p></td> |
| </tr></tbody> |
| </table></div></td> |
| </tr> |
| <tr> |
| <td><p><span class="term">Returns:</span></p></td> |
| <td><p><code class="computeroutput">true</code> if the value has been dispatched, <code class="computeroutput">false</code> otherwise </p></td> |
| </tr> |
| </tbody> |
| </table></div> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">virtual</span> <span class="identifier">type_info_wrapper</span> <a name="idp41770928-bb"></a><span class="identifier">get_type</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> |
| <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 attribute value type </p></td> |
| </tr></tbody> |
| </table></div> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="identifier">value_type</span> <span class="keyword">const</span> <span class="special">&</span> <a name="idp41773168-bb"></a><span class="identifier">get</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> |
| <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>Reference to the contained value. </p></td> |
| </tr></tbody> |
| </table></div> |
| </li> |
| </ol></div> |
| </div> |
| </div> |
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| <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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