diff options
Diffstat (limited to 'libs/log/doc/html/boost/log/extract_or_thr_idp42466736.html')
-rw-r--r-- | libs/log/doc/html/boost/log/extract_or_thr_idp42466736.html | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/libs/log/doc/html/boost/log/extract_or_thr_idp42466736.html b/libs/log/doc/html/boost/log/extract_or_thr_idp42466736.html new file mode 100644 index 000000000..b1779b59f --- /dev/null +++ b/libs/log/doc/html/boost/log/extract_or_thr_idp42466736.html @@ -0,0 +1,90 @@ +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> +<title>Function template extract_or_throw</title> +<link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> +<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> +<link rel="home" href="../../index.html" title="Chapter 1. Boost.Log v2"> +<link rel="up" href="../../attributes.html#header.boost.log.attributes.value_extraction_hpp" title="Header <boost/log/attributes/value_extraction.hpp>"> +<link rel="prev" href="extract_idp42459712.html" title="Function template extract"> +<link rel="next" href="extract_or_thr_idp42474768.html" title="Function template extract_or_throw"> +</head> +<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> +<table cellpadding="2" width="100%"><tr><td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td></tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="extract_idp42459712.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../attributes.html#header.boost.log.attributes.value_extraction_hpp"><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="extract_or_thr_idp42474768.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> +</div> +<div class="refentry"> +<a name="boost.log.extract_or_thr_idp42466736"></a><div class="titlepage"></div> +<div class="refnamediv"> +<h2><span class="refentrytitle">Function template extract_or_throw</span></h2> +<p>boost::log::extract_or_throw</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: <<a class="link" href="../../attributes.html#header.boost.log.attributes.value_extraction_hpp" title="Header <boost/log/attributes/value_extraction.hpp>">boost/log/attributes/value_extraction.hpp</a>> + +</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> + <a class="link" href="result_of/extract_or_throw.html" title="Struct template extract_or_throw">result_of::extract_or_throw</a><span class="special"><</span> <span class="keyword">typename</span> <span class="identifier">DescriptorT</span><span class="special">::</span><span class="identifier">value_type</span><span class="special">,</span> <span class="identifier">DescriptorT</span> <span class="special">></span><span class="special">::</span><span class="identifier">type</span> + <span class="identifier">extract_or_throw</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="special">;</span></pre></div> +<div class="refsect1"> +<a name="idp110267360"></a><h2>Description</h2> +<p>The function extracts 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 extracted.</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">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 extract. </p></td> +</tr> +</tbody> +</table></div></td> +</tr> +<tr> +<td><p><span class="term">Returns:</span></p></td> +<td><p>The extracted value or a non-empty <code class="computeroutput">value_ref</code> that refers to the value. </p></td> +</tr> +<tr> +<td><p><span class="term">Throws:</span></p></td> +<td>An exception is thrown if the requested value cannot be extracted. </td> +</tr> +</tbody> +</table></div> +</div> +</div> +<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> +<td align="left"></td> +<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>). + </p> +</div></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="extract_idp42459712.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../attributes.html#header.boost.log.attributes.value_extraction_hpp"><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="extract_or_thr_idp42474768.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> +</div> +</body> +</html> |