module Maybe ( -- * Maybe Maybe(..) , maybe , maybeM , isJust , isNothing , fromMaybe , listToMaybe , maybeToList , catMaybes , mapMaybe -- ** Prisms , _Just , _Nothing -- ** Newtypes , Option(..) , option , First(..) , Last(..) ) where import Control.Lens.Prism (_Just, _Nothing) import Control.Monad.Extra (maybeM) import Data.Maybe import Data.Monoid import Data.Semigroup (Option(..), option)