NAME

std::basic_filebuf::operator= - std::basic_filebuf::operator=

Synopsis

std::basic_filebuf& operator=( std::basic_filebuf&& rhs ); (since C++11)
std::basic_filebuf& operator=( const std::basic_filebuf& rhs ) =
delete;

Assigns another basic_filebuf object.

1) First calls close() to close the associated file, then moves the contents of rhs
into *this: the put and get buffers, the associated file, the locale, the openmode,
the is_open flag, and any other state. After the move, rhs is not associated with a
file and rhs.is_open() == false.
2) The copy assignment operator is deleted; basic_filebuf is not CopyAssignable.

Parameters

rhs - another basic_filebuf that will be moved from

Return value

*this

Example

// Run this code

#include <fstream>
#include <string>
#include <iostream>

int main()
{

std::ifstream fin("test.in"); // read-only
std::ofstream fout("test.out"); // write-only

std::string s;
getline(fin, s);
std::cout << s << '\n'; // output

*fin.rdbuf() = std::move(*fout.rdbuf());

getline(fin, s);
std::cout << s << '\n'; // empty line

std::cout << std::boolalpha << fout.is_open() << '\n'; // prints "false"

}

See also

constructor constructs a basic_filebuf object
(public member function)
swap swaps two basic_filebuf objects
(C++11) (public member function)