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1. maybeC :: forall (m :: Type -> Type) i o a . Monad m => ConduitT i o m (Maybe a) -> ConduitT i o (MaybeT m) a

   conduit	Data.Conduit.Lift

   Wrap the base monad in MaybeT Since 1.0.11

2. maybeNew :: MonadIO m => (a -> m (Ptr b)) -> Maybe a -> m (Ptr b)

   unliftio	UnliftIO.Foreign

   Lifted maybeNew.

3. maybePeek :: MonadUnliftIO m => (Ptr a -> m b) -> Ptr a -> m (Maybe b)

   unliftio	UnliftIO.Foreign

   Unlifted maybePeek.

4. maybeWith :: MonadIO m => (a -> (Ptr b -> m c) -> m c) -> Maybe a -> (Ptr b -> m c) -> m c

   unliftio	UnliftIO.Foreign

   Lifted maybeWith.

5. maybeM :: Monad m => m b -> (a -> m b) -> m (Maybe a) -> m b

   extra	Control.Monad.Extra

   Monadic generalisation of maybe.

6. maybeToEither :: a -> Maybe b -> Either a b

   extra	Data.Either.Extra

   Given a Maybe, convert it to an Either, providing a suitable value for the Left should the value be Nothing.

   \a b -> maybeToEither a (Just b) == Right b
   \a -> maybeToEither a Nothing == Left a
   

7. maybeM :: Monad m => m b -> (a -> m b) -> m (Maybe a) -> m b

   extra	Extra

   Monadic generalisation of maybe.

8. maybeToEither :: a -> Maybe b -> Either a b

   extra	Extra

   Given a Maybe, convert it to an Either, providing a suitable value for the Left should the value be Nothing.

   \a b -> maybeToEither a (Just b) == Right b
   \a -> maybeToEither a Nothing == Left a
   

9. maybeLeft :: Either a b -> Maybe a

   utility-ht	Data.Either.HT

   No documentation available.

10. maybeRight :: Either a b -> Maybe b

    utility-ht	Data.Either.HT

    No documentation available.

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