Template Specialization for T -> std::vector

Question

I have a template class method

template
T pop();

Now I want to do a template specialization as follows,

Answer 1

Off the top of my head, I usually get around it by using a one-member struct:

template 
struct pop_impl {
    static T pop(classname& x); // normal function
};

template 
struct pop_impl> {
    static std::vector pop(classname& x); // specialized for std::vector
};

template 
T classname::pop() { return pop_impl::pop(*this); }