std::basic_ostream< _CharT, _Traits >::sentry - Performs setup work for output streams.

       Generated automatically by Doxygen for libstdc++ from the source code.

                                                    libstdc++std::basic_ostream<_CharT,_Traits>::sentry(3cxx)

template<typename_CharT,typename_Traits>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).

       References std::ios_base::failbit.

   template<typename_CharT,typename_Traits>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.

template<typename_CharT,typename_Traits>
       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-safeprefixandsuffixoperations.

template<typename_CharT,typename_Traits>std::basic_ostream<_CharT,_Traits>::sentry::operatorbool()const[inline],[explicit]
       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).

       std::basic_ostream< _CharT, _Traits >::sentry - Performs setup work for output streams.

       #include <ostream>

   PublicMemberFunctionssentry (basic_ostream< _CharT, _Traits > &__os)
           The constructor performs preparatory work.
       ~sentry ()
           Possibly flushes the stream.
       operatorbool () const
           Quick status checking.