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boost exception [SVN r43485]
2008-03-04 01:41:17 +00:00
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<h1>Boost Exception</h1>
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minor documentation fixes. [SVN r44476]
2008-04-16 22:55:19 +00:00
<!-- Copyright (c) 2006-2008 Emil Dotchevski and Reverge Studios, Inc. -->
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boost exception [SVN r43485]
2008-03-04 01:41:17 +00:00
<div class="RenoIncludeDIV"><h3>error_info</h3>
<div class="RenoIncludeDIV"><p><tt>#include &lt;<span class="RenoLink"><a href="exception_error_info_hpp.html">boost/exception/info.hpp</a></span>&gt;</tt></p>
<pre>namespace
boost
{
<span class="RenoIncludeSPAN"> template &lt;class Tag,class T&gt;
class
<span class="RenoLink"><a href="error_info.html">error_info</a></span>
{
public:
typedef T value_type;
error_info( value_type const &amp; );
private:
---unspecified---
};</span>
}</pre>
</div><h4>Requirements:</h4>
<p><tt>T</tt> must have accessible copy constructor and must not be a reference.</p>
<h4>Description:</h4>
<p>This class template is used to associate a <tt>Tag</tt> type with a value type <tt>T</tt>. Objects of type <tt><span class="RenoLink"><a href="error_info.html">error_info</a></span>&lt;Tag,T&gt;</tt> can be passed to <tt><span class="RenoLink"><a href="operator_shl_exception.html">operator&lt;&lt;</a></span>()</tt> to be stored in objects of type <tt>boost::<span class="RenoLink"><a href="exception.html">exception</a></span></tt>.</p>
<h4>Note:</h4>
<p>The header <tt>&lt;<span class="RenoLink"><a href="exception_error_info_value_hpp.html">boost/exception/error_info.hpp</a></span>&gt;</tt> provides a declaration of the <tt><span class="RenoLink"><a href="error_info.html">error_info</a></span></tt> template, which is sufficient for the purpose of <tt>typedef</tt>ing an instance for specific <tt>Tag</tt> and <tt>T</tt>, like this:</p>
<pre>#include &lt;<span class="RenoLink"><a href="exception_error_info_value_hpp.html">boost/exception/error_info.hpp</a></span>&gt;
typedef boost::<span class="RenoLink"><a href="error_info.html">error_info</a></span>&lt;struct tag_errno,int&gt; errno_info;</pre>
<p>Of course, to actually add an <tt>errno_info</tt> object to exceptions using <tt><span class="RenoLink"><a href="operator_shl_exception.html">operator&lt;&lt;</a></span>()</tt>, or to retrieve it using <tt><span class="RenoLink"><a href="get_error_info.html">get_error_info</a></span>()</tt>, you must first <tt>#include &lt;<span class="RenoLink"><a href="exception_error_info_hpp.html">boost/exception/info.hpp</a></span>&gt;</tt>.</p>
</div><h3>See also:</h3>
<div class="RenoPageList"><a href="BOOST_ERROR_INFO.html">BOOST_ERROR_INFO<br/>
</a><a href="boost-exception.html">Boost Exception<br/>
</a><a href="exception_error_info_value_hpp.html">boost/exception/error_info.hpp<br/>
</a><a href="exception.html">exception<br/>
</a><a href="get_error_info.html">get_error_info<br/>
</a><a href="operator_shl_exception.html">operator&lt;&lt;/exception<br/>
</a><a href="using_enable_error_info.html">Tutorial: Integrating Boost Exception in Existing Exception Class Hierarchies<br/>
</a><a href="logging.html">Tutorial: Logging of boost::exception Objects<br/>
</a></div>
minor documentation fixes. [SVN r44476]
2008-04-16 22:55:19 +00:00
<!-- Copyright (c) 2006-2008 Emil Dotchevski and Reverge Studios, Inc. -->
<!-- Distributed under the Boost Software License, Version 1.0. (See accompanying -->
<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -->
boost exception [SVN r43485]
2008-03-04 01:41:17 +00:00
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