std::basic_ostream::sentry
From cppreference.com
< cpp | io | basic ostream
| Defined in header
<ostream>
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| template< class CharT, class Traits = std::char_traits<CharT> >
class std::basic_istream<charT,traits>::sentry |
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An object of class basic_ostream::sentry is constructed in local scope at the beginning of each member function of std::basic_ostream that performs output (both formatted and unformatted). Its constructor prepares the output stream: checks if the stream is already in a failed state, flushes the tie()'d output streams, and performs other implementation-defined tasks if necessary. Implementation-defined cleanup, as well as flushing of the output stream if necessary, is performed in the destructor, so that it is guaranteed to happen if exceptions are thrown during output.
[edit] Member functions
| constructs the sentry object. All the preparation tasks are done here (public member function) |
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| finalizes the stream object after formatted output or after exception, if necessary (public member function) |
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| operator= |
the assignment operator is deleted (public member function) |
| checks if the preparation of the stream object was successful (public member function) |
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[edit] Example
| This section is incomplete Reason: no example |
[edit] See also
| inserts formatted data (public member function) |
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