Template class methods definition with enable_if as template parameter

Question

I asked this question earlier where a solution was presented. The solution is great as far as the question is concerned, but now I am confused on how I would define the methods

Answer 1

From the looks of it, you want to do something along the lines of this:

template ::value>::type >
struct Foo;

template 
struct Foo {
    Foo();
};

template 
Foo::Foo() {
}

This sneakily takes advantage of the default argument in a few places: don't get confused, there is an implicit void sitting in several locations.