<span class="keyword">enum</span> <a name="boost.log.fallback_to_none.@0"></a>@0 <span class="special">{</span> guaranteed_result = = false <span class="special">}</span><span class="special">;</span>
- <span class="comment">// <a class="link" href="fallback_to_none.html#idm45185967160080-bb">public static functions</a></span>
- <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FunT<span class="special">></span> <span class="keyword">static</span> <span class="keyword">bool</span> <a class="link" href="fallback_to_none.html#idm45185967159520-bb"><span class="identifier">apply_default</span></a><span class="special">(</span><span class="identifier">FunT</span> <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> FunT<span class="special">></span> <span class="keyword">static</span> <span class="keyword">bool</span> <a class="link" href="fallback_to_none.html#idm45185967156384-bb"><span class="identifier">apply_default</span></a><span class="special">(</span><span class="identifier">FunT</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
- <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="fallback_to_none.html#idm45185967153248-bb"><span class="identifier">on_invalid_type</span></a><span class="special">(</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_index</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
- <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="fallback_to_none.html#idm45185967150912-bb"><span class="identifier">on_missing_value</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
+ <span class="comment">// <a class="link" href="fallback_to_none.html#idm45711348760800-bb">public static functions</a></span>
+ <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FunT<span class="special">></span> <span class="keyword">static</span> <span class="keyword">bool</span> <a class="link" href="fallback_to_none.html#idm45711348760240-bb"><span class="identifier">apply_default</span></a><span class="special">(</span><span class="identifier">FunT</span> <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> FunT<span class="special">></span> <span class="keyword">static</span> <span class="keyword">bool</span> <a class="link" href="fallback_to_none.html#idm45711348757104-bb"><span class="identifier">apply_default</span></a><span class="special">(</span><span class="identifier">FunT</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
+ <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="fallback_to_none.html#idm45711348753968-bb"><span class="identifier">on_invalid_type</span></a><span class="special">(</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_index</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
+ <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="fallback_to_none.html#idm45711348751632-bb"><span class="identifier">on_missing_value</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="idm46436920687568"></a><h2>Description</h2>
+<a name="idm45554752180448"></a><h2>Description</h2>
<p>The <code class="computeroutput"><a class="link" href="fallback_to_none.html" title="Struct fallback_to_none">fallback_to_none</a></code> policy results in returning an empty value reference if the attribute value cannot be extracted. </p>
<div class="refsect2">
-<a name="idm46436920685472"></a><h3>
-<a name="idm45185967160080-bb"></a><code class="computeroutput">fallback_to_none</code> public static functions</h3>
+<a name="idm45554752178352"></a><h3>
+<a name="idm45711348760800-bb"></a><code class="computeroutput">fallback_to_none</code> public static 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> FunT<span class="special">></span> <span class="keyword">static</span> <span class="keyword">bool</span> <a name="idm45185967159520-bb"></a><span class="identifier">apply_default</span><span class="special">(</span><span class="identifier">FunT</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span></pre>
+<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FunT<span class="special">></span> <span class="keyword">static</span> <span class="keyword">bool</span> <a name="idm45711348760240-bb"></a><span class="identifier">apply_default</span><span class="special">(</span><span class="identifier">FunT</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span></pre>
<p>The method is called in order to apply a function object to the default value. </p>
</li>
<li class="listitem">
-<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FunT<span class="special">></span> <span class="keyword">static</span> <span class="keyword">bool</span> <a name="idm45185967156384-bb"></a><span class="identifier">apply_default</span><span class="special">(</span><span class="identifier">FunT</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span></pre>
+<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> FunT<span class="special">></span> <span class="keyword">static</span> <span class="keyword">bool</span> <a name="idm45711348757104-bb"></a><span class="identifier">apply_default</span><span class="special">(</span><span class="identifier">FunT</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span></pre>
<p>The method is called in order to apply a function object to the default value. </p>
</li>
<li class="listitem">
-<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45185967153248-bb"></a><span class="identifier">on_invalid_type</span><span class="special">(</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_index</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span></pre>
+<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45711348753968-bb"></a><span class="identifier">on_invalid_type</span><span class="special">(</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_index</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span></pre>
<p>The method is called when value extraction failed because the attribute value has different type than requested. </p>
</li>
<li class="listitem">
-<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45185967150912-bb"></a><span class="identifier">on_missing_value</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
+<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45711348751632-bb"></a><span class="identifier">on_missing_value</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>The method is called when value extraction failed because the attribute value was not found. </p>
</li>
</ol></div>
projects / platform / upstream / boost.git / blobdiff