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  1. listToMaybeLast :: [a] -> Maybe a

    test-framework Test.Framework.Providers.API

    No documentation available.

  2. hoistMaybe :: MonadPlus m => Maybe a -> m a

    optparse-applicative Options.Applicative.Internal

    No documentation available.

  3. fuseBothMaybe :: forall (m :: Type -> Type) a b r1 c r2 . Monad m => ConduitT a b m r1 -> ConduitT b c m r2 -> ConduitT a c m (Maybe r1, r2)

    conduit Data.Conduit

    Like fuseBoth, but does not force consumption of the Producer. In the case that the Producer terminates, the result value is provided as a Just value. If it does not terminate, then a Nothing value is returned. One thing to note here is that "termination" here only occurs if the Producer actually yields a Nothing value. For example, with the Producer mapM_ yield [1..5], if five values are requested, the Producer has not yet terminated. Termination only occurs when the sixth value is awaited for and the Producer signals termination. Since 1.2.4

  4. mapOutputMaybe :: forall (m :: Type -> Type) o1 o2 i r . Monad m => (o1 -> Maybe o2) -> ConduitT i o1 m r -> ConduitT i o2 m r

    conduit Data.Conduit

    Same as mapOutput, but use a function that returns Maybe values. Since 0.5.0

  5. fuseBothMaybe :: forall (m :: Type -> Type) a b r1 c r2 . Monad m => ConduitT a b m r1 -> ConduitT b c m r2 -> ConduitT a c m (Maybe r1, r2)

    conduit Data.Conduit.Internal

    Like fuseBoth, but does not force consumption of the Producer. In the case that the Producer terminates, the result value is provided as a Just value. If it does not terminate, then a Nothing value is returned. One thing to note here is that "termination" here only occurs if the Producer actually yields a Nothing value. For example, with the Producer mapM_ yield [1..5], if five values are requested, the Producer has not yet terminated. Termination only occurs when the sixth value is awaited for and the Producer signals termination. Since 1.2.4

  6. mapOutputMaybe :: forall (m :: Type -> Type) o1 o2 l i u r . Monad m => (o1 -> Maybe o2) -> Pipe l i o1 u m r -> Pipe l i o2 u m r

    conduit Data.Conduit.Internal

    Same as mapOutput, but use a function that returns Maybe values. Since 0.5.0

  7. catMaybesS :: forall (m :: Type -> Type) a . Monad m => StreamConduit (Maybe a) m a

    conduit Data.Conduit.Internal.List.Stream

    No documentation available.

  8. mapMaybeMS :: Monad m => (a -> m (Maybe b)) -> StreamConduit a m b

    conduit Data.Conduit.Internal.List.Stream

    No documentation available.

  9. mapMaybeS :: forall (m :: Type -> Type) a b . Monad m => (a -> Maybe b) -> StreamConduit a m b

    conduit Data.Conduit.Internal.List.Stream

    No documentation available.

  10. runMaybeC :: forall (m :: Type -> Type) i o r . Monad m => ConduitT i o (MaybeT m) r -> ConduitT i o m (Maybe r)

    conduit Data.Conduit.Lift

    Run MaybeT in the base monad Since 1.0.11

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