namespace std {
template <class charT, class traits = char_traits<charT>>
class basic_iostream
: public basic_istream<charT, traits>,
public basic_ostream<charT, traits> {
public:
using char_type = charT;
using int_type = typename traits::int_type;
using pos_type = typename traits::pos_type;
using off_type = typename traits::off_type;
using traits_type = traits;
explicit basic_iostream(basic_streambuf<charT, traits>* sb);
virtual ~basic_iostream();
protected:
basic_iostream(const basic_iostream& rhs) = delete;
basic_iostream(basic_iostream&& rhs);
basic_iostream& operator=(const basic_iostream& rhs) = delete;
basic_iostream& operator=(basic_iostream&& rhs);
void swap(basic_iostream& rhs);
};
}
The class template basic_iostream inherits a number of functions that allow reading input and writing output to sequences controlled by a stream buffer.
30.7.4.6.1 basic_iostream constructors [iostream.cons]explicit basic_iostream(basic_streambuf<charT, traits>* sb);
Postconditions: rdbuf() == sb and gcount() == 0.
basic_iostream(basic_iostream&& rhs);
Effects: Move constructs from the rvalue rhs by constructing the basic_istream base class with move(rhs).
30.7.4.6.2 basic_iostream destructor [iostream.dest]virtual ~basic_iostream();
Effects: Destroys an object of class basic_iostream.
Remarks: Does not perform any operations on rdbuf().
30.7.4.6.3 basic_iostream assign and swap [iostream.assign]basic_iostream& operator=(basic_iostream&& rhs);
Effects: As if by swap(rhs).
void swap(basic_iostream& rhs);
Effects: Calls basic_istream<charT, traits>::swap(rhs).
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