libs/log/doc/html/boost/log/basic_settings_section.html


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<title>Class template basic_settings_section</title>
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<div class="refentry">
<a name="boost.log.basic_settings_section"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2><span class="refentrytitle">Class template basic_settings_section</span></h2>
<p>boost::log::basic_settings_section &#8212; The class represents a reference to the settings container section. </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: &lt;<a class="link" href="../../utilities.html#header.boost.log.utility.setup.settings_hpp" title="Header &lt;boost/log/utility/setup/settings.hpp&gt;">boost/log/utility/setup/settings.hpp</a>&gt;

</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> CharT<span class="special">&gt;</span> 
<span class="keyword">class</span> <a class="link" href="basic_settings_section.html" title="Class template basic_settings_section">basic_settings_section</a> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
  <span class="comment">// <a class="link" href="basic_settings_section.html#boost.log.basic_settings_sectiontypes">types</a></span>
  <span class="keyword">typedef</span> <span class="identifier">CharT</span>                                                  <a name="boost.log.basic_settings_section.char_type"></a><span class="identifier">char_type</span><span class="special">;</span>           <span class="comment">// Character type. </span>
  <span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span> <span class="identifier">char_type</span> <span class="special">&gt;</span>                         <a name="boost.log.basic_settings_section.string_type"></a><span class="identifier">string_type</span><span class="special">;</span>         <span class="comment">// String type. </span>
  <span class="keyword">typedef</span> <span class="identifier">property_tree</span><span class="special">::</span><span class="identifier">basic_ptree</span><span class="special">&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">,</span> <span class="identifier">string_type</span> <span class="special">&gt;</span> <a name="boost.log.basic_settings_section.property_tree_type"></a><span class="identifier">property_tree_type</span><span class="special">;</span>  <span class="comment">// Property tree type. </span>
  <span class="keyword">typedef</span> <span class="identifier">property_tree_type</span><span class="special">::</span><span class="identifier">path_type</span>                          <a name="boost.log.basic_settings_section.path_type"></a><span class="identifier">path_type</span><span class="special">;</span>           <span class="comment">// Property tree path type. </span>
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span>                                 <a class="link" href="basic_settings_section.html#boost.log.basic_settings_section.const_reference"><span class="identifier">const_reference</span></a><span class="special">;</span>   
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span>                                 <a class="link" href="basic_settings_section.html#boost.log.basic_settings_section.reference"><span class="identifier">reference</span></a><span class="special">;</span>         
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span>                                 <a class="link" href="basic_settings_section.html#boost.log.basic_settings_section.const_iterator"><span class="identifier">const_iterator</span></a><span class="special">;</span>    
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span>                                 <a class="link" href="basic_settings_section.html#boost.log.basic_settings_section.iterator"><span class="identifier">iterator</span></a><span class="special">;</span>          

  <span class="comment">// <a class="link" href="basic_settings_section.html#boost.log.basic_settings_sectionconstruct-copy-destruct">construct/copy/destruct</a></span>
  <a class="link" href="basic_settings_section.html#idp46865344-bb"><span class="identifier">basic_settings_section</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="basic_settings_section.html#idp46866096-bb"><span class="identifier">basic_settings_section</span></a><span class="special">(</span><a class="link" href="basic_settings_section.html" title="Class template basic_settings_section">basic_settings_section</a> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">explicit</span> <a class="link" href="basic_settings_section.html#idp46868512-bb"><span class="identifier">basic_settings_section</span></a><span class="special">(</span><span class="identifier">property_tree_type</span> <span class="special">*</span><span class="special">)</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="basic_settings_section.html#idp46822032-bb">public member functions</a></span>
  <span class="keyword">explicit</span> <a class="link" href="basic_settings_section.html#idp46822592-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="basic_settings_section.html#idp46824432-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="identifier">iterator</span> <a class="link" href="basic_settings_section.html#idp46826000-bb"><span class="identifier">begin</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="basic_settings_section.html#idp46827312-bb"><span class="identifier">end</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">const_iterator</span> <a class="link" href="basic_settings_section.html#idp46828624-bb"><span class="identifier">begin</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">const_iterator</span> <a class="link" href="basic_settings_section.html#idp46830208-bb"><span class="identifier">end</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">reverse_iterator</span> <a class="link" href="basic_settings_section.html#idp46831792-bb"><span class="identifier">rbegin</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">reverse_iterator</span> <a class="link" href="basic_settings_section.html#idp46833104-bb"><span class="identifier">rend</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">const_reverse_iterator</span> <a class="link" href="basic_settings_section.html#idp46834416-bb"><span class="identifier">rbegin</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">const_reverse_iterator</span> <a class="link" href="basic_settings_section.html#idp46836000-bb"><span class="identifier">rend</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">bool</span> <a class="link" href="basic_settings_section.html#idp46837584-bb"><span class="identifier">empty</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">reference</span> <a class="link" href="basic_settings_section.html#idp46839184-bb"><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">const_reference</span> <a class="link" href="basic_settings_section.html#idp46842480-bb"><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">reference</span> <a class="link" href="basic_settings_section.html#idp46846048-bb"><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span></a><span class="special">(</span><span class="keyword">const</span> <span class="keyword">char</span> <span class="special">*</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">const_reference</span> <a class="link" href="basic_settings_section.html#idp46849344-bb"><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span></a><span class="special">(</span><span class="keyword">const</span> <span class="keyword">char</span> <span class="special">*</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">property_tree_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> <a class="link" href="basic_settings_section.html#idp46852912-bb"><span class="identifier">property_tree</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">property_tree_type</span> <span class="special">&amp;</span> <a class="link" href="basic_settings_section.html#idp46854496-bb"><span class="identifier">property_tree</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">bool</span> <a class="link" href="basic_settings_section.html#idp46855792-bb"><span class="identifier">has_section</span></a><span class="special">(</span><span class="identifier">string_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">bool</span> <a class="link" href="basic_settings_section.html#idp46858784-bb"><span class="identifier">has_parameter</span></a><span class="special">(</span><span class="identifier">string_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">string_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="basic_settings_section.html#idp46862912-bb"><span class="identifier">swap</span></a><span class="special">(</span><a class="link" href="basic_settings_section.html" title="Class template basic_settings_section">basic_settings_section</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idp135277088"></a><h2>Description</h2>
<p>The section refers to a sub-tree of the library settings container. It does not own the referred sub-tree but allows for convenient access to parameters within the subsection. </p>
<div class="refsect2">
<a name="idp135277952"></a><h3>
<a name="boost.log.basic_settings_sectiontypes"></a><code class="computeroutput">basic_settings_section</code> 
        public
       types</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<p>
<span class="keyword">typedef</span> <span class="identifier">implementation_defined</span> <a name="boost.log.basic_settings_section.const_reference"></a><span class="identifier">const_reference</span><span class="special">;</span></p>
<p>Constant reference to the parameter value </p>
</li>
<li class="listitem">
<p>
<span class="keyword">typedef</span> <span class="identifier">implementation_defined</span> <a name="boost.log.basic_settings_section.reference"></a><span class="identifier">reference</span><span class="special">;</span></p>
<p>Mutable reference to the parameter value </p>
</li>
<li class="listitem">
<p>
<span class="keyword">typedef</span> <span class="identifier">implementation_defined</span> <a name="boost.log.basic_settings_section.const_iterator"></a><span class="identifier">const_iterator</span><span class="special">;</span></p>
<p>Constant iterator over nested parameters and subsections </p>
</li>
<li class="listitem">
<p>
<span class="keyword">typedef</span> <span class="identifier">implementation_defined</span> <a name="boost.log.basic_settings_section.iterator"></a><span class="identifier">iterator</span><span class="special">;</span></p>
<p>Mutable iterator over nested parameters and subsections </p>
</li>
</ol></div>
</div>
<div class="refsect2">
<a name="idp135295296"></a><h3>
<a name="boost.log.basic_settings_sectionconstruct-copy-destruct"></a><code class="computeroutput">basic_settings_section</code> 
        public
       construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><a name="idp46865344-bb"></a><span class="identifier">basic_settings_section</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Default constructor. Creates an empty settings container. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idp46866096-bb"></a><span class="identifier">basic_settings_section</span><span class="special">(</span><a class="link" href="basic_settings_section.html" title="Class template basic_settings_section">basic_settings_section</a> <span class="keyword">const</span> <span class="special">&amp;</span> that<span class="special">)</span><span class="special">;</span></pre>
<p>Copy constructor. </p>
</li>
<li class="listitem"><pre class="literallayout"><span class="keyword">explicit</span> <a name="idp46868512-bb"></a><span class="identifier">basic_settings_section</span><span class="special">(</span><span class="identifier">property_tree_type</span> <span class="special">*</span> tree<span class="special">)</span><span class="special">;</span></pre></li>
</ol></div>
</div>
<div class="refsect2">
<a name="idp135313408"></a><h3>
<a name="idp46822032-bb"></a><code class="computeroutput">basic_settings_section</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><span class="keyword">explicit</span> <a name="idp46822592-bb"></a><span class="keyword">operator</span> <span class="keyword">bool</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p>Checks if the section refers to the container. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">bool</span> <a name="idp46824432-bb"></a><span class="keyword">operator</span><span class="special">!</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p>Checks if the section refers to the container. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp46826000-bb"></a><span class="identifier">begin</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Returns an iterator over the nested subsections and parameters. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp46827312-bb"></a><span class="identifier">end</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Returns an iterator over the nested subsections and parameters. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_iterator</span> <a name="idp46828624-bb"></a><span class="identifier">begin</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns an iterator over the nested subsections and parameters. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_iterator</span> <a name="idp46830208-bb"></a><span class="identifier">end</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns an iterator over the nested subsections and parameters. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">reverse_iterator</span> <a name="idp46831792-bb"></a><span class="identifier">rbegin</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Returns a reverse iterator over the nested subsections and parameters. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">reverse_iterator</span> <a name="idp46833104-bb"></a><span class="identifier">rend</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Returns a reverse iterator over the nested subsections and parameters. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_reverse_iterator</span> <a name="idp46834416-bb"></a><span class="identifier">rbegin</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a reverse iterator over the nested subsections and parameters. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_reverse_iterator</span> <a name="idp46836000-bb"></a><span class="identifier">rend</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a reverse iterator over the nested subsections and parameters. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">bool</span> <a name="idp46837584-bb"></a><span class="identifier">empty</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Checks if the container is empty (i.e. contains no sections and parameters). </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">reference</span> <a name="idp46839184-bb"></a><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">const</span> <span class="special">&amp;</span> section_name<span class="special">)</span><span class="special">;</span></pre>
<p>Accessor to a single parameter. This operator should be used in conjunction with the subsequent subscript operator that designates the parameter name.</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">section_name</code></span></p></td>
<td><p>The name of the section in which the parameter resides </p></td>
</tr></tbody>
</table></div></td>
</tr>
<tr>
<td><p><span class="term">Returns:</span></p></td>
<td><p>An unspecified reference type that can be used for parameter name specifying </p></td>
</tr>
</tbody>
</table></div>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_reference</span> <a name="idp46842480-bb"></a><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">const</span> <span class="special">&amp;</span> section_name<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Accessor to a single parameter. This operator should be used in conjunction with the subsequent subscript operator that designates the parameter name.</p>
<p>

</p>
<div class="variablelist"><table border="0" class="variablelist compact">
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<col align="left" valign="top">
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<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">section_name</code></span></p></td>
<td><p>The name of the section in which the parameter resides </p></td>
</tr></tbody>
</table></div></td>
</tr>
<tr>
<td><p><span class="term">Returns:</span></p></td>
<td><p>An unspecified reference type that can be used for parameter name specifying </p></td>
</tr>
</tbody>
</table></div>
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<li class="listitem">
<pre class="literallayout"><span class="identifier">reference</span> <a name="idp46846048-bb"></a><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span><span class="special">(</span><span class="keyword">const</span> <span class="keyword">char</span> <span class="special">*</span> section_name<span class="special">)</span><span class="special">;</span></pre>
<p>Accessor to a single parameter. This operator should be used in conjunction with the subsequent subscript operator that designates the parameter name.</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">section_name</code></span></p></td>
<td><p>The name of the section in which the parameter resides </p></td>
</tr></tbody>
</table></div></td>
</tr>
<tr>
<td><p><span class="term">Returns:</span></p></td>
<td><p>An unspecified reference type that can be used for parameter name specifying </p></td>
</tr>
</tbody>
</table></div>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_reference</span> <a name="idp46849344-bb"></a><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span><span class="special">(</span><span class="keyword">const</span> <span class="keyword">char</span> <span class="special">*</span> section_name<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Accessor to a single parameter. This operator should be used in conjunction with the subsequent subscript operator that designates the parameter name.</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">section_name</code></span></p></td>
<td><p>The name of the section in which the parameter resides </p></td>
</tr></tbody>
</table></div></td>
</tr>
<tr>
<td><p><span class="term">Returns:</span></p></td>
<td><p>An unspecified reference type that can be used for parameter name specifying </p></td>
</tr>
</tbody>
</table></div>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">property_tree_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> <a name="idp46852912-bb"></a><span class="identifier">property_tree</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Accessor for the embedded property tree </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">property_tree_type</span> <span class="special">&amp;</span> <a name="idp46854496-bb"></a><span class="identifier">property_tree</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Accessor for the embedded property tree </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">bool</span> <a name="idp46855792-bb"></a><span class="identifier">has_section</span><span class="special">(</span><span class="identifier">string_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> section_name<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Checks if the specified section is present in the container.</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">section_name</code></span></p></td>
<td><p>The name of the section </p></td>
</tr></tbody>
</table></div></td>
</tr></tbody>
</table></div>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">bool</span> <a name="idp46858784-bb"></a><span class="identifier">has_parameter</span><span class="special">(</span><span class="identifier">string_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> section_name<span class="special">,</span> 
                   <span class="identifier">string_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> param_name<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Checks if the specified parameter is present in the container.</p>
<p>
</p>
<div class="variablelist"><table border="0" class="variablelist compact">
<colgroup>
<col align="left" valign="top">
<col>
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<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">param_name</code></span></p></td>
<td><p>The name of the parameter </p></td>
</tr>
<tr>
<td><p><span class="term"><code class="computeroutput">section_name</code></span></p></td>
<td><p>The name of the section in which the parameter resides </p></td>
</tr>
</tbody>
</table></div></td>
</tr></tbody>
</table></div>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp46862912-bb"></a><span class="identifier">swap</span><span class="special">(</span><a class="link" href="basic_settings_section.html" title="Class template basic_settings_section">basic_settings_section</a> <span class="special">&amp;</span> that<span class="special">)</span><span class="special">;</span></pre>
<p>Swaps two references to settings sections. </p>
</li>
</ol></div>
</div>
</div>
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      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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