27 Input/output library [input.output]

27.9 File-based streams [file.streams]

27.9.4 Class template basic_ofstream [ofstream]

27.9.4.1 basic_ofstream constructors [ofstream.cons]

basic_ofstream();

1

Effects: Constructs an object of class basic_ofstream<charT, traits>, initializing the base class with basic_ostream(&sb) and initializing sb with basic_filebuf<charT, traits>()) ([ostream.cons], [filebuf.cons]).

explicit basic_ofstream(const char* s, ios_base::openmode mode = ios_base::out);

2

Effects: Constructs an object of class basic_ofstream<charT, traits>, initializing the base class with basic_ostream(&sb) and initializing sb with basic_filebuf<charT, traits>()) ([ostream.cons], [filebuf.cons]), then calls rdbuf()->open(s, mode | ios_base::out). If that function returns a null pointer, calls setstate(failbit).

explicit basic_ofstream(const string& s, ios_base::openmode mode = ios_base::out);

3

Effects: The same as basic_ofstream(s.c_str(), mode).

basic_ofstream(basic_ofstream&& rhs);

4

Effects: Move constructs from the rvalue rhs. This is accomplished by move constructing the base class, and the contained basic_filebuf. Next basic_ostream<charT, traits>::set_rdbuf(&sb) is called to install the contained basic_filebuf.