module Maybe ( isJust, isNothing , fromJust, fromMaybe, listToMaybe, maybeToList , catMaybes, mapMaybe -- ... and what the Prelude exports , Maybe(Nothing,Just) , maybe ) where import IsJust import IsNothing import FromJust import FromMaybe import ListToMaybe import MaybeToList import CatMaybes import MapMaybe