30 Input/output library [input.output]

30.7 Formatting and manipulators [iostream.format]

30.7.5 Output streams [output.streams]

30.7.5.1 Class template basic_­ostream [ostream]

30.7.5.1.1 basic_­ostream constructors [ostream.cons]

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explicit basic_ostream(basic_streambuf<charT, traits>* sb);
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Effects: Constructs an object of class basic_­ostream, initializing the base class subobject with basic_­ios<charT, traits>​::​init(sb) ([basic.ios.cons]).
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Postconditions: rdbuf() == sb.
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basic_ostream(basic_ostream&& rhs);
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Effects: Move constructs from the rvalue rhs.
This is accomplished by default constructing the base class and calling basic_­ios<charT, traits>​::​move(rhs) to initialize the base class.
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virtual ~basic_ostream();
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Effects: Destroys an object of class basic_­ostream.
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Remarks: Does not perform any operations on rdbuf().