On 10/2/06, Jonathan Lang <[EMAIL PROTECTED]> wrote:
This notion of exclusionary roles is an interesting one, though.  I'd
like to hear about what kinds of situations would find this notion
useful; but for the moment, I'll take your word that such situations
exist and go from there.

Well to be honest, I haven't found a real-world usage for it yet (at
least in my travels so far), but the Fortress example was this:

 trait OrganicMolecule extends Molecule
     excludes { InorganicMolecule }
 end
 trait InorganicMolecule extends Molecule end

And from that I could see that given a large enough set of roles you
would surely create roles which conflicted with one another on a
conceptual level rather then on a methods/attribute (i.e. - more
concrete) level.

- Stevan

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