c++ - Function References

Question

So I was just working with function pointers and I remembered that you could do this:

void Foo()
{
}

int main()
{
    void(& func)() = Foo;

    func(); //::Foo();
}

The obvious advantage being that references reference valid objects (unless they're misused), or functions in this case.

The obvious disadvantages being that you can't store an array of references and can't use them for member function pointers (at least as far as I can tell).

My question: does anyone use them (i.e., function references, not function pointers), and if so, in what scenarios have you found them useful/helpful?

The only place I can see them being useful off the bat is binding a reference to a certain function when working with conditional compilation.

Answer 1

I've used them before to add customization to classes by passing them to the constructor in a way like the strategy pattern