C++ template programming

gistfile1.cpp

#include <iostream>

template <typename F, typename T1, typename T2>
void flip2(F f, T1 &&t1, T2 &&t2)
{
  f(t2, t1);
}

void g(int &&i, int &j)
{
  cout << i << " " << j << endl;
}

int main(void)
{
  int i = 1;
  flip2(g, i, 42);
}