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<a name="boost.log.expressions.attribute_keyword"></a><div class="titlepage"></div>
</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> DescriptorT<span class="special">,</span> <span class="keyword">template</span><span class="special"><</span> <span class="keyword">typename</span> <span class="special">></span> <span class="keyword">class</span> ActorT<span class="special">></span>
<span class="keyword">struct</span> <a class="link" href="attribute_keyword.html" title="Struct template attribute_keyword">attribute_keyword</a> <span class="special">{</span>
- <span class="comment">// <a class="link" href="attribute_keyword.html#idm45185965963712-bb">public static functions</a></span>
- <span class="keyword">static</span> <span class="identifier">attribute_name</span> <a class="link" href="attribute_keyword.html#idm45185965963152-bb"><span class="identifier">get_name</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
- <span class="keyword">static</span> <span class="identifier">or_none_result_type</span> <a class="link" href="attribute_keyword.html#idm45185965961728-bb"><span class="identifier">or_none</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
- <span class="keyword">static</span> <span class="identifier">or_throw_result_type</span> <a class="link" href="attribute_keyword.html#idm45185965960256-bb"><span class="identifier">or_throw</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
+ <span class="comment">// <a class="link" href="attribute_keyword.html#idm45711347564272-bb">public static functions</a></span>
+ <span class="keyword">static</span> <span class="identifier">attribute_name</span> <a class="link" href="attribute_keyword.html#idm45711347563712-bb"><span class="identifier">get_name</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
+ <span class="keyword">static</span> <span class="identifier">or_none_result_type</span> <a class="link" href="attribute_keyword.html#idm45711347562288-bb"><span class="identifier">or_none</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
+ <span class="keyword">static</span> <span class="identifier">or_throw_result_type</span> <a class="link" href="attribute_keyword.html#idm45711347560816-bb"><span class="identifier">or_throw</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> DefaultT<span class="special">></span>
<span class="keyword">static</span> <a class="link" href="attribute_actor.html" title="Class template attribute_actor">attribute_actor</a><span class="special"><</span> <span class="identifier">value_type</span><span class="special">,</span> <span class="identifier">fallback_to_default</span><span class="special"><</span> <span class="identifier">DefaultT</span> <span class="special">></span><span class="special">,</span> <span class="identifier">descriptor_type</span><span class="special">,</span> <span class="identifier">ActorT</span> <span class="special">></span>
- <a class="link" href="attribute_keyword.html#idm45185965958784-bb"><span class="identifier">or_default</span></a><span class="special">(</span><span class="identifier">DefaultT</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
+ <a class="link" href="attribute_keyword.html#idm45711347559344-bb"><span class="identifier">or_default</span></a><span class="special">(</span><span class="identifier">DefaultT</span> <span class="keyword">const</span> <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="idm46436912328176"></a><h2>Description</h2>
+<a name="idm45554743821344"></a><h2>Description</h2>
<p>This class implements an expression template keyword. It is used to start template expressions involving attribute values. </p>
<div class="refsect2">
-<a name="idm46436912327360"></a><h3>
-<a name="idm45185965963712-bb"></a><code class="computeroutput">attribute_keyword</code> public static functions</h3>
+<a name="idm45554743820528"></a><h3>
+<a name="idm45711347564272-bb"></a><code class="computeroutput">attribute_keyword</code> public static functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
-<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">attribute_name</span> <a name="idm45185965963152-bb"></a><span class="identifier">get_name</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Returns attribute name. </li>
+<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">attribute_name</span> <a name="idm45711347563712-bb"></a><span class="identifier">get_name</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Returns attribute name. </li>
<li class="listitem">
-<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">or_none_result_type</span> <a name="idm45185965961728-bb"></a><span class="identifier">or_none</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Generates an expression that extracts the attribute value or a default value. </li>
+<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">or_none_result_type</span> <a name="idm45711347562288-bb"></a><span class="identifier">or_none</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Generates an expression that extracts the attribute value or a default value. </li>
<li class="listitem">
-<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">or_throw_result_type</span> <a name="idm45185965960256-bb"></a><span class="identifier">or_throw</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Generates an expression that extracts the attribute value or throws an exception. </li>
+<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">or_throw_result_type</span> <a name="idm45711347560816-bb"></a><span class="identifier">or_throw</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Generates an expression that extracts the attribute value or throws an exception. </li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> DefaultT<span class="special">></span>
<span class="keyword">static</span> <a class="link" href="attribute_actor.html" title="Class template attribute_actor">attribute_actor</a><span class="special"><</span> <span class="identifier">value_type</span><span class="special">,</span> <span class="identifier">fallback_to_default</span><span class="special"><</span> <span class="identifier">DefaultT</span> <span class="special">></span><span class="special">,</span> <span class="identifier">descriptor_type</span><span class="special">,</span> <span class="identifier">ActorT</span> <span class="special">></span>
- <a name="idm45185965958784-bb"></a><span class="identifier">or_default</span><span class="special">(</span><span class="identifier">DefaultT</span> <span class="keyword">const</span> <span class="special">&</span> def_val<span class="special">)</span><span class="special">;</span></pre>Generates an expression that extracts the attribute value or a default value. </li>
+ <a name="idm45711347559344-bb"></a><span class="identifier">or_default</span><span class="special">(</span><span class="identifier">DefaultT</span> <span class="keyword">const</span> <span class="special">&</span> def_val<span class="special">)</span><span class="special">;</span></pre>Generates an expression that extracts the attribute value or a default value. </li>
</ol></div>
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