opAssign and template class

[dbjdbj]

>
> You can't. Classes are reference types. This just doesn't make 
> sense: x2 = x_; does not create any new objects.

*object_alive* is what I mentioned, not object_create

therefore it does "make sense" ...  so  here it is again:

auto x_ = new X() , // created:1 , alive: 1
      x2 = x_      ; // created:1 , alive: 2

I tried (in all of my D innocence) to implement simple but 
effective counter from C++ side of the "wall" ... using the CRTP 
idiom ...