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| <h2><span class="refentrytitle">Function template visit</span></h2> |
| <p>boost::log::visit</p> |
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| <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.value_visitation_hpp" title="Header <boost/log/attributes/value_visitation.hpp>">boost/log/attributes/value_visitation.hpp</a>> |
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| <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">typename</span> VisitorT<span class="special">></span> |
| <a class="link" href="visitation_result.html" title="Class visitation_result">visitation_result</a> |
| <span class="identifier">visit</span><span class="special">(</span><span class="identifier">expressions</span><span class="special">::</span><span class="identifier">attribute_keyword</span><span class="special"><</span> <span class="identifier">DescriptorT</span><span class="special">,</span> <span class="identifier">ActorT</span> <span class="special">></span> <span class="keyword">const</span> <span class="special">&</span> keyword<span class="special">,</span> |
| <a class="link" href="attribute_value_set.html" title="Class attribute_value_set">attribute_value_set</a> <span class="keyword">const</span> <span class="special">&</span> attrs<span class="special">,</span> <span class="identifier">VisitorT</span> visitor<span class="special">)</span><span class="special">;</span></pre></div> |
| <div class="refsect1"> |
| <a name="idp110802944"></a><h2>Description</h2> |
| <p>The function applies a visitor to an attribute value from the view. The user has to explicitly specify the type or set of possible types of the attribute value to be visited.</p> |
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| <td><p><span class="term">Parameters:</span></p></td> |
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| <td><p><span class="term"><code class="computeroutput">attrs</code></span></p></td> |
| <td><p>A set of attribute values in which to look for the specified attribute value. </p></td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><code class="computeroutput">keyword</code></span></p></td> |
| <td><p>The keyword of the attribute value to visit. </p></td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><code class="computeroutput">visitor</code></span></p></td> |
| <td><p>A receiving function object to pass the attribute value to. </p></td> |
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| </tbody> |
| </table></div></td> |
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| <td><p><span class="term">Returns:</span></p></td> |
| <td><p>The result of visitation. </p></td> |
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| <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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