import Data.List (nub) :t nubBy import Data.List (nubBy) :t nub :m +Data.List :m -Data.List :t nub :t nubBy import Data.List hiding (nub) :t nub import qualified Data.List as L :t nub :t L.nub :m +Data.List :t L.nub :m -Data.List :t L.nub :m Prelude :t nub