Haskell: Operators are functions

Haskell implements operators as functions. Just like how you get type signature of a variable, function, you can also get the type signature of an operator by using :t command.

Prelude> :t (+)
(+) :: Num a => a -> a -> a
Prelude> 
Prelude> :t (*)
(*) :: Num a => a -> a -> a
Prelude> 
Prelude> :t (==)
(==) :: Eq a => a -> a -> Bool
Prelude> 
Prelude> :t (&&)
(&&) :: Bool -> Bool -> Bool

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