The following code example is taken from the book
C++ Templates - The Complete Guide
by David Vandevoorde and Nicolai M. Josuttis, Addison-Wesley, 2002
© Copyright David Vandevoorde and Nicolai M. Josuttis 2002
#include "duo1.hpp"
Duo<float,int> foo ()
{
return make_duo(42,42);
}
int main()
{
if (foo() == make_duo(42,42.0)) {
//...
}
}