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< h1 > Boost Exception< / h1 >
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<!-- Copyright (c) 2006 - 2008 Emil Dotchevski and Reverge Studios, Inc. -->
<!-- Distributed under the Boost Software License, Version 1.0. (See accompanying -->
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< div class = "RenoIncludeDIV" > < p > < span class = "RenoEscape" > # <!-- <wiki>`#</wiki> --> < / span > include < < span class = "RenoLink" > < a href = "exception_error_info_hpp.html" > boost/exception/info.hpp< / a > < / span > > < / p >
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< pre > namespace
boost
{
< span class = "RenoIncludeSPAN" > template < class Tag,class T>
class
< span class = "RenoLink" > < a href = "error_info.html" > error_info< / a > < / span >
{
public:
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typedef T value_type;
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error_info( value_type const & );
};< / span >
}< / pre >
< / div > < h4 > Requirements:< / h4 >
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< p > T must have accessible copy constructor and must not be a reference (there is no requirement that T's copy constructor does not throw.)< / p >
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< h4 > Description:< / h4 >
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< p > This class template is used to associate a Tag type with a value type T. Objects of type < span class = "RenoLink" > < a href = "error_info.html" > error_info< / a > < / span > < Tag,T> can be passed to < span class = "RenoLink" > < a href = "operator_shl_exception.html" > operator< < < / a > < / span > to be stored in objects of type boost::< span class = "RenoLink" > < a href = "exception.html" > exception< / a > < / span > .< / p >
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< h4 > Note:< / h4 >
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< p > The header < < span class = "RenoLink" > < a href = "exception_error_info_value_hpp.html" > boost/exception/error_info.hpp< / a > < / span > > provides a declaration of the < span class = "RenoLink" > < a href = "error_info.html" > error_info< / a > < / span > template, which is sufficient for the purpose of typedefing an instance for specific Tag and T, like this:< / p >
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< pre > #include < < span class = "RenoLink" > < a href = "exception_error_info_value_hpp.html" > boost/exception/error_info.hpp< / a > < / span > >
typedef boost::< span class = "RenoLink" > < a href = "error_info.html" > error_info< / a > < / span > < struct tag_errno,int> errno_info;< / pre >
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< p > Of course, to actually add an < span class = "RenoLink" > < a href = "error_info.html" > error_info< / a > < / span > object to < span class = "RenoLink" > < a href = "exception.html" > exceptions< / a > < / span > using < span class = "RenoLink" > < a href = "operator_shl_exception.html" > operator< < < / a > < / span > , or to retrieve it using < span class = "RenoLink" > < a href = "get_error_info.html" > get_error_info< / a > < / span > , you must first #include < < span class = "RenoLink" > < a href = "exception_error_info_hpp.html" > boost/exception/info.hpp< / a > < / span > > .< / p >
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< h3 > See Also:< / h3 >
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< div class = "RenoPageList" > < a href = "boost-exception.html" > Boost Exception< br / >
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< / a > < a href = "exception_error_info_value_hpp.html" > boost/exception/error_info.hpp< br / >
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< / a > < a href = "exception_exception_hpp.html" > boost/exception/exception.hpp< br / >
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< / a > < a href = "exception_error_info_hpp.html" > boost/exception/info.hpp< br / >
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< / a > < a href = "diagnostic_information.html" > diagnostic_information< br / >
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< / a > < a href = "exception.html" > exception< br / >
< / a > < a href = "get_error_info.html" > get_error_info< br / >
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< / a > < a href = "tutorial_enable_error_info.html" > Integrating Boost Exception in Existing Exception Class Hierarchies< br / >
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< / a > < a href = "operator_shl_exception.html" > operator< < /exception< br / >
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< / a > < a href = "operator_shl_tuple.html" > operator< < /tuple< br / >
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< / a > < / div >
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< / div >
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<!-- Copyright (c) 2006 - 2008 Emil Dotchevski and Reverge Studios, Inc. -->
<!-- Distributed under the Boost Software License, Version 1.0. (See accompanying -->
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