Prelude> ((++) [1,2] [3,4]) [1,2,3,4] Prelude> ((:) 1 [2,3]) [1,2,3] Prelude> ((head) [1,2,3,4]) 1 Prelude> ((tail) [1,2,3,4]) [2,3,4] Prelude> import Data.List Prelude Data.List> ((\\) [1,2,3,4] [1,4]) [2,3] Prelude Data.List>