[ofstream.swap]

31 Input/output library [input.output]

31.10 File-based streams [file.streams]

31.10.5 Class template basic_ofstream [ofstream]

31.10.5.3 Swap [ofstream.swap]

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void swap(basic_ofstream& rhs);

1

Effects: Exchanges the state of *this and rhs by calling basic_ostream<charT, traits>​::​swap(rhs) and sb.swap(rhs.sb).

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template<class charT, class traits> void swap(basic_ofstream<charT, traits>& x, basic_ofstream<charT, traits>& y);

2

Effects: Equivalent to x.swap(y).