1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Class impl</title> 5<link rel="stylesheet" href="../../../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../../index.html" title="Chapter 1. Boost.Log v2"> 8<link rel="up" href="../mutable_constant.html#idm44984882485184" title="Description"> 9<link rel="prev" href="../mutable_constant.html" title="Class template mutable_constant"> 10<link rel="next" href="../mutable__idm46079579256048.html" title="Class template mutable_constant<T, void, void, void>"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr><td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td></tr></table> 14<hr> 15<div class="spirit-nav"> 16<a accesskey="p" href="../mutable_constant.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../mutable_constant.html#idm44984882485184"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../mutable__idm46079579256048.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 17</div> 18<div class="refentry"> 19<a name="boost.log.attributes.mutable_constant.impl"></a><div class="titlepage"></div> 20<div class="refnamediv"> 21<h2><span class="refentrytitle">Class impl</span></h2> 22<p>boost::log::attributes::mutable_constant::impl — Factory implementation. </p> 23</div> 24<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 25<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.mutable_constant_hpp" title="Header <boost/log/attributes/mutable_constant.hpp>">boost/log/attributes/mutable_constant.hpp</a>> 26 27</span> 28 29<span class="comment">// Factory implementation.</span> 30 31<span class="keyword">class</span> <a class="link" href="impl.html" title="Class impl">impl</a> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">attribute</span><span class="special">::</span><span class="identifier">impl</span> <span class="special">{</span> 32<span class="keyword">public</span><span class="special">:</span> 33 <span class="comment">// <a class="link" href="impl.html#boost.log.attributes.mutable_constant.implconstruct-copy-destruct">construct/copy/destruct</a></span> 34 <span class="keyword">explicit</span> <a class="link" href="impl.html#idm46079579275488-bb"><span class="identifier">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> 35 <span class="keyword">explicit</span> <a class="link" href="impl.html#idm46079579273808-bb"><span class="identifier">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> 36 37 <span class="comment">// <a class="link" href="impl.html#idm46079579285600-bb">private member functions</a></span> 38 <a class="link" href="impl.html#idm46079579285024-bb"><span class="identifier">BOOST_STATIC_ASSERT_MSG</span></a><span class="special">(</span><span class="special">!</span><span class="special">,</span> 39 <span class="string">"Boost.Log: Mutex and both lock types either must not be void or must all be void"</span><span class="special">)</span><span class="special">;</span> 40 41 <span class="comment">// <a class="link" href="impl.html#idm46079579282736-bb">public member functions</a></span> 42 <span class="keyword">virtual</span> <a class="link" href="../../attribute_value.html" title="Class attribute_value">attribute_value</a> <a class="link" href="impl.html#idm46079579282176-bb"><span class="identifier">get_value</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> 43 <span class="keyword">void</span> <a class="link" href="impl.html#idm46079579279840-bb"><span class="identifier">set</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> 44 <span class="keyword">void</span> <a class="link" href="impl.html#idm46079579278304-bb"><span class="identifier">set</span></a><span class="special">(</span><span class="identifier">value_type</span> <span class="special">&&</span><span class="special">)</span><span class="special">;</span> 45 <span class="identifier">value_type</span> <a class="link" href="impl.html#idm46079579276768-bb"><span class="identifier">get</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> 46<span class="special">}</span><span class="special">;</span></pre></div> 47<div class="refsect1"> 48<a name="idm44984882379264"></a><h2>Description</h2> 49<div class="refsect2"> 50<a name="idm44984882378848"></a><h3> 51<a name="boost.log.attributes.mutable_constant.implconstruct-copy-destruct"></a><code class="computeroutput">impl</code> 52 public 53 construct/copy/destruct</h3> 54<div class="orderedlist"><ol class="orderedlist" type="1"> 55<li class="listitem"> 56<pre class="literallayout"><span class="keyword">explicit</span> <a name="idm46079579275488-bb"></a><span class="identifier">impl</span><span class="special">(</span><span class="identifier">value_type</span> <span class="keyword">const</span> <span class="special">&</span> value<span class="special">)</span><span class="special">;</span></pre> 57<p>Initializing constructor </p> 58</li> 59<li class="listitem"> 60<pre class="literallayout"><span class="keyword">explicit</span> <a name="idm46079579273808-bb"></a><span class="identifier">impl</span><span class="special">(</span><span class="identifier">value_type</span> <span class="special">&&</span> value<span class="special">)</span><span class="special">;</span></pre> 61<p>Initializing constructor </p> 62</li> 63</ol></div> 64</div> 65<div class="refsect2"> 66<a name="idm44984882363680"></a><h3> 67<a name="idm46079579285600-bb"></a><code class="computeroutput">impl</code> private member functions</h3> 68<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><pre class="literallayout"> <a name="idm46079579285024-bb"></a><span class="identifier">BOOST_STATIC_ASSERT_MSG</span><span class="special">(</span><span class="special">!</span><span class="special">,</span> 69 <span class="string">"Boost.Log: Mutex and both lock types either must not be void or must all be void"</span><span class="special">)</span><span class="special">;</span></pre></li></ol></div> 70</div> 71<div class="refsect2"> 72<a name="idm44984882355888"></a><h3> 73<a name="idm46079579282736-bb"></a><code class="computeroutput">impl</code> public member functions</h3> 74<div class="orderedlist"><ol class="orderedlist" type="1"> 75<li class="listitem"> 76<pre class="literallayout"><span class="keyword">virtual</span> <a class="link" href="../../attribute_value.html" title="Class attribute_value">attribute_value</a> <a name="idm46079579282176-bb"></a><span class="identifier">get_value</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> 77<p> 78</p> 79<div class="variablelist"><table border="0" class="variablelist compact"> 80<colgroup> 81<col align="left" valign="top"> 82<col> 83</colgroup> 84<tbody><tr> 85<td><p><span class="term">Returns:</span></p></td> 86<td><p>The actual attribute value. It shall not return empty values (exceptions shall be used to indicate errors). </p></td> 87</tr></tbody> 88</table></div> 89</li> 90<li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="idm46079579279840-bb"></a><span class="identifier">set</span><span class="special">(</span><span class="identifier">value_type</span> <span class="keyword">const</span> <span class="special">&</span> value<span class="special">)</span><span class="special">;</span></pre></li> 91<li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="idm46079579278304-bb"></a><span class="identifier">set</span><span class="special">(</span><span class="identifier">value_type</span> <span class="special">&&</span> value<span class="special">)</span><span class="special">;</span></pre></li> 92<li class="listitem"><pre class="literallayout"><span class="identifier">value_type</span> <a name="idm46079579276768-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></li> 93</ol></div> 94</div> 95</div> 96</div> 97<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 98<td align="left"></td> 99<td align="right"><div class="copyright-footer">Copyright © 2007-2019 Andrey Semashev<p> 100 Distributed under the Boost Software License, Version 1.0. (See accompanying 101 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>). 102 </p> 103</div></td> 104</tr></table> 105<hr> 106<div class="spirit-nav"> 107<a accesskey="p" href="../mutable_constant.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../mutable_constant.html#idm44984882485184"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../mutable__idm46079579256048.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 108</div> 109</body> 110</html> 111
