std::emit_on_flush, std::no_emit_on_flush
Defined in header <ostream> | ||
|---|---|---|
template< class CharT, class Traits > std::basic_ostream<CharT, Traits>& emit_on_flush( std::basic_ostream<CharT, Traits>& os ); | (1) | (since C++20) |
template< class CharT, class Traits > std::basic_ostream<CharT, Traits>& no_emit_on_flush( std::basic_ostream<CharT, Traits>& os ); | (2) | (since C++20) |
If os.rdbuf() actually points to a std::basic_syncbuf<CharT, Traits, Allocator> buf, toggles whether it emits (i.e., transmits data to the underlying stream buffer) when flushed:
1) calls
buf.set_emit_on_sync(true)
2) calls
buf.set_emit_on_sync(false)
Otherwise, these manipulators have no effect.
This is an output-only I/O manipulator, it may be called with an expression such as out << std::emit_on_flush for any out of type std::basic_ostream.
Parameters
| os | - | reference to output stream |
Return value
os (reference to the stream after manipulation).
Example
See also
| changes the current emit-on-sync policy (public member function of std::basic_syncbuf<CharT,Traits,Allocator>) |
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