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

This seems to work OK for me:

template
class Counted
{
  public:
  static int id()
  {
    static int v;
    return (int)&v;
  }
};

#include 

int main()
{
  std::cout<<"Counted::id()="<::id()<::id()="<::id()<