How can I have multiple parameter packs in a variadic template?

Question

Function one() accepts one parameter pack. Function two() accepts two. Each pack is constrained to be wrapped in types A and B. Why is it

Answer 1

The compiler needs a way to know where is the barrier between the two variadic templates. A clean way of doing this is to define one pack of arguments for an object and the second pack for a static member function. This can be appied to more than two variadic templates by nesting multiple structs in eachother. (keeping the last level as a function)

#include 

template
struct Obj
{
    template
    static void Func()
    {
        std::cout << sizeof...(First) << std::endl;
        std::cout << sizeof...(Second) << std::endl;
    }
};

int main()
{
    Obj::Func();
    return 0;
}