[Haskell-cafe] A newbie question ?

[zaxis]

newtype TypeMap = TypeMap (Map.Map TypeRep Dynamic)

lookup :: Typeable a => TypeMap -> Maybe a
lookup (TypeMap mp) = res
    where res = liftM (fromJust . fromDynamic) $ Map.lookup (typeOf $
fromJust res) mp

It seems that the `res` in  `fromJust res`  has not been defined ?

Sincerely!

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fac n = let {  f = foldr (*) 1 [1..n] } in f 
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