Haskell only allows arithmetic operators on like types, so you cannot add an Int to a Word32, subtract an Int16 from an Int64, or compare an Integer with an Int

Haskell only allows arithmetic operators on like types, so you cannot add an Int to a Word32, subtract an Int16 from an Int64, or compare an Integer with an Int. Operators are defined in typeclass Num, so the type of e.g. addition is (+) :: Num a => a -> a -> a while comparisons are define in typeclasses Eq and Ord, with types like (/=) :: Eq a => a -> a -> Bool (<=) :: Ord a => a -> a -> Bool