std::flush_emit (3) - Linux Man Pages
Defined in header <ostream>
template< class CharT, class Traits > (since C++20)
std::basic_ostream<CharT, Traits>& flush_emit( std::basic_ostream<CharT, Traits>& os );
Flushes the output sequence os as if by calling os.flush(). Then, if os.rdbuf() actually points to a std::basic_syncbuf<CharT, Traits, Allocator> buf, calls buf.emit().
This is an output-only I/O manipulator, it may be called with an expression such as out << std::flush_emit for any out of type std::basic_ostream.
os - reference to output stream
os (reference to the stream after manipulation)
This section is incomplete
Reason: no example
flush (public member function of std::basic_ostream<CharT,Traits>)