🚀 go-pugleaf

> Nah, you can do it with straight Modula-2 and a bit of indirection.  I
> wrote an IBM technical report on this but I don't know if they are
> available externally.

So you can but was this the question?

> DEFINITION MODULE Stack;
> TYPE
>   T (*Opaque*);
> PROCEDURE Push (stack: T;
>                 item: CARDINAL);
> PROCEDURE Pop (stack: T): CARDINAL;
> END Stack;

That is dangerous. Push(thing); would be ok and hides whatever is going on in 
the stack module.

Is the bottom line a need for OOP? Throw something at the stack and let it 
sort it out but runtime or compiletime?

You have shown a runtime solution, now show a compiletime solution. :-)

  TC. 
    E-mail: tchannon@black.demon.co.uk or tchannon@cix.compulink.co.uk