libstdc++
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Public Member Functions | |
sentry (basic_ostream< _CharT, _Traits > &__os) | |
~sentry () | |
operator bool () const | |
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.
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explicit |
The constructor performs preparatory work.
__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.
References std::ios_base::failbit, std::basic_ios< _CharT, _Traits >::good(), std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::setstate(), and std::basic_ios< _CharT, _Traits >::tie().
Referenced by std::basic_ostream< char >::operator<<(), std::basic_ostream< char >::put(), and std::basic_ostream< char >::write().
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inline |
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inlineexplicit |