Extract the return type of a function without calling it (using templates?)

Question

I\'m looking for a way in C++ to extract the return type of a function (without calling it). I presume this will require some template magic.

float Foo();
i         


        

Answer 1

As suggested by dribeas, here is the solution I eventually came to:

float Foo();
int Bar();

template<typename T> Monkey(T) {
    boost::function_traits< boost::remove_pointer<T>::type >::result_type var1 = ...;
    // Now do something
}

Monkey(Foo);
Monkey(Bar);

This isn't exactly the form I aimed for with my original question, but it's close enough for me.