31 Input/output library [input.output]

31.7 Formatting and manipulators [iostream.format]

31.7.6 Output streams [output.streams]

31.7.6.5 Standard basic_ostream manipulators [ostream.manip]

1
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Each instantiation of any of the function templates specified in this subclause is a designated addressable function ([namespace.std]).
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template<class charT, class traits> basic_ostream<charT, traits>& endl(basic_ostream<charT, traits>& os);
2
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Effects: Calls os.put(os.widen('\n')), then os.flush().
3
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Returns: os.
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template<class charT, class traits> basic_ostream<charT, traits>& ends(basic_ostream<charT, traits>& os);
4
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Effects: Inserts a null character into the output sequence: calls os.put(charT()).
5
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Returns: os.
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template<class charT, class traits> basic_ostream<charT, traits>& flush(basic_ostream<charT, traits>& os);
6
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Effects: Calls os.flush().
7
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Returns: os.
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template<class charT, class traits> basic_ostream<charT, traits>& emit_on_flush(basic_ostream<charT, traits>& os);
8
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Effects: If os.rdbuf() is a basic_syncbuf<charT, traits, Allocator>*, called buf for the purpose of exposition, calls buf->set_emit_on_sync(true).
Otherwise this manipulator has no effect.
[Note 1: 
To work around the issue that the Allocator template argument cannot be deduced, implementations can introduce an intermediate base class to basic_syncbuf that manages its emit-on-sync flag.
— end note]
9
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Returns: os.
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template<class charT, class traits> basic_ostream<charT, traits>& noemit_on_flush(basic_ostream<charT, traits>& os);
10
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Effects: If os.rdbuf() is a basic_syncbuf<charT, traits, Allocator>*, called buf for the purpose of exposition, calls buf->set_emit_on_sync(false).
Otherwise this manipulator has no effect.
11
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Returns: os.
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template<class charT, class traits> basic_ostream<charT, traits>& flush_emit(basic_ostream<charT, traits>& os);
12
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Effects: Calls os.flush().
Then, if os.rdbuf() is a basic_syncbuf<charT, traits, Allocator>*, called buf for the purpose of exposition, behaves as an unformatted output function ([ostream.unformatted]) of os.
After constructing a sentry object, calls buf->emit().
If that call returns false, calls os.setstate(ios_base​::​badbit).
13
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Returns: os.