Compile-time constant id

Question

Given the following:

template
class A
{
public:
    static const unsigned int ID = ?;
};

I want ID to generate a unique c

Answer 1

Use the memory address of a static function.

template
class A  {
public:
    static void ID() {}
}; 

(&(A::ID)) will be different from (&(A::ID)) and so on.