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[gitmo/Moose.git] / TODO

diff --git a/TODO b/TODO
index 6f953dd..3fde938 100644 (file)
--- a/TODO
+++ b/TODO
@@ -95,6 +95,27 @@ and that if this usage style is used nothing is exported to the namespace.
 ...
 [23:49]        mst     oh, also: method 'has' => sub { ... } could squelch the redefine warning
 
+- Role excludes
+
+[17:00]        stevan  I am reading the new Fortress Spec 
+[17:00]        stevan  http://research.sun.com/projects/plrg/fortress0903.pdf
+[17:00]        stevan  they have traits too
+[17:01]        stevan  and they have one cool feature which we might want to steal
+[17:01]        stevan  traits can "exclude" other traits
+[17:01]        stevan  which means they cannot be combined with other classes/roles which does() that trait
+[17:01]        stevan  the example they give is
+[17:01]        stevan  trait OrganicMolecule extends Molecule 
+[17:01]        stevan      excludes { InorganicMolecule } 
+[17:01]        stevan  end 
+[17:01]        stevan  trait InorganicMolecule extends Molecule 
+[17:01]        stevan  end 
+[17:01]        stevan  this creates a set of mutually exclusive traits
+[17:02]        stevan  so that this:
+[17:02]        stevan  trait ScienceGoo extends { OrganicMolecule, InorganicMolocule } end
+[17:02]        stevan  would fail
+[17:02]        stevan  because OrganicMolecule, InorganicMolocule can never be used together
+[17:03]        stevan  I am thinking this is quite sane 
+
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 TO PONDER
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