public member function

std::basic_ifstream::swap

void swap (basic_ifstream& x);

Swap internals

Exchanges all internal data between x and *this.

Internally, the function calls basic_istream::swap and then calls the member swap of the associated basic_filebuf object.

Parameters

x: Another basic_ifstream object of the same type (i.e., with the same template parameters charT and traits).

Return Value

none

Example

// swapping ifstream objects
#include <iostream>     // std::cout
#include <fstream>      // std::ifstream

int main () {
  std::ifstream foo;
  std::ifstream bar ("test.txt");

  foo.swap(bar);

  char c = foo.get();

  while (foo.good()) {
    std::cout << c;
    c = foo.get();
  }

  foo.close();

  return 0;
}