[Haskell-cafe] ANNOUNCE: pqueue-mtl, stateful-mtl

Louis Wasserman wasserman.louis at gmail.com
Mon Feb 16 12:36:57 EST 2009

Is there a way of exploiting functional dependencies in the following

class Foo a b | a -> b where...

data Foo a b => Bar a = B a b

This is not ambiguous, because the functional dependency ensures a unique b
if one exists.  Can this be done without mentioning b as a type variable in

Louis Wasserman
wasserman.louis at gmail.com
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