> >> this approach doesn't do anything beyond what Java does
> >
> >Actually, it does.  It lets you inherit behavior, as well as interfaces.
> 
> It only lets you inherit behaviour to new subclasses

Not that it matters, but...  Yes, that's right.  In systems like
these, that's how you "add functionality to already existing classes";
you mix them with the new functionality into a new type.

Bill

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