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{-# LANGUAGE MultiParamTypeClasses, FunctionalDependencies #-}
module Prog where
class AddName i d | d->i where
addName :: d -> d
class Rec rec struct | rec->struct where
mapRec :: (struct->struct) -> rec -> rec
-- We got a very bogus siguature for addNameRec in thc 7.6rc1
-- addNameRec :: forall rec struct.
-- Recursive.Rec rec struct
-- -> DefinedNames.AddName (GHC.Prim.Any *) struct
-- -> rec
-- -> rec
addNameRec x = mapRec addName x
instance AddName Int Bool where
addName = error "urk"
instance AddName Float Char where
addName = error "urk"
instance Rec Char Bool where
mapRec = error "urk"
instance Rec Bool Char where
mapRec = error "urk"
foo1 :: Char -> Char
foo1 = addNameRec
foo2 :: Bool -> Bool
foo2 = addNameRec
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