Re^4: Solving compositional problems with Perl 6 roles

[dragonchild]

in reply to Re^3: Solving compositional problems with Perl 6 roles
in thread Solving compositional problems with Perl 6 roles

Actually, I think that your attempt at humor was actually a good idea, in disguise. I can see where one would like roles to be exclusionary - if $foo does X, that means you cannot have $foo does Y, so there should be a way of specifying that in the definitions of X and Y. But, as I said earlier, this is starting to sound like Prolog. (Not necessarily a bad thing, mind you ...)