Provided by: libstdc++6-4.4-doc_4.4.7-8ubuntu1_all 

NAME
std::basic_ostream< _CharT, _Traits >::sentry -
SYNOPSIS
Public Member Functions operator bool () const sentry (basic_ostream< _CharT, _Traits > &__os) ~sentry ()
Detailed Description
template<typename _CharT, typename _Traits = char_traits<_CharT>>class std::basic_ostream< _CharT, _Traits >::sentry Performs setup work for output streams. Objects of this class are created before all of the standard inserters are run. It is responsible for 'exception-safe prefix and suffix operations.' Definition at line 377 of file ostream.
Constructor & Destructor Documentation
template<typename _CharT, typename _Traits = char_traits<_CharT>> std::basic_ostream< _CharT, _Traits >::sentry::sentry (basic_ostream< _CharT, _Traits > &__os) [explicit] The constructor performs preparatory work. Parameters: os The output stream to guard. If the stream state is good (os.good() is true), then if the stream is tied to another output stream, is.tie()->flush() is called to synchronize the output sequences. If the stream state is still good, then the sentry state becomes true ('okay'). Definition at line 47 of file ostream.tcc. template<typename _CharT, typename _Traits = char_traits<_CharT>> std::basic_ostream< _CharT, _Traits >::sentry::~sentry () [inline] Possibly flushes the stream. If ios_base::unitbuf is set in os.flags(), and std::uncaught_exception() is true, the sentry destructor calls flush() on the output stream. Definition at line 405 of file ostream. References std::uncaught_exception(), and std::unitbuf().
Member Function Documentation
template<typename _CharT, typename _Traits = char_traits<_CharT>> std::basic_ostream< _CharT, _Traits >::sentry::operator bool () const [inline] Quick status checking. Returns: The sentry state. For ease of use, sentries may be converted to booleans. The return value is that of the sentry state (true == okay). Definition at line 423 of file ostream.
Author
Generated automatically by Doxygen for libstdc++ from the source code. libstdc++ Thu Mar 20 2std::basic_ostream< _CharT, _Traits >::sentry(3cxx)