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1. mapMaybe :: forall (m :: Type -> Type) a b . Functor m => (a -> Maybe b) -> SourceT m a -> SourceT m b

   servant	Servant.Types.SourceT

   Filter values.

   >>> toList $ mapMaybe (\x -> if odd x then Just x else Nothing) (source [0..10]) :: [Int]
   [1,3,5,7,9]
   

   >>> mapMaybe (\x -> if odd x then Just x else Nothing) (source [0..2]) :: SourceT Identity Int
   fromStepT (Effect (Identity (Skip (Yield 1 (Skip Stop)))))
   

   Illustrates why we need Skip.

2. mapMaybeStep :: forall (m :: Type -> Type) a b . Functor m => (a -> Maybe b) -> StepT m a -> StepT m b

   servant	Servant.Types.SourceT

   No documentation available.

3. mapMG :: (ModSummary -> ModSummary) -> ModuleGraph -> ModuleGraph

   ghc	GHC

   Map a function f over all the ModSummaries. To preserve invariants f can't change the isBoot status.

4. mapMap :: (a -> v) -> LabelMap a -> LabelMap v

   ghc	GHC.Cmm.Dataflow.Label

   No documentation available.

5. mapMapWithKey :: (Label -> a -> v) -> LabelMap a -> LabelMap v

   ghc	GHC.Cmm.Dataflow.Label

   No documentation available.

6. mapMember :: Label -> LabelMap a -> Bool

   ghc	GHC.Cmm.Dataflow.Label

   No documentation available.

7. mapMaybeDTyConEnv :: (a -> Maybe b) -> DTyConEnv a -> DTyConEnv b

   ghc	GHC.Core.TyCon.Env

   No documentation available.

8. mapMaybeBag :: (a -> Maybe b) -> Bag a -> Bag b

   ghc	GHC.Data.Bag

   No documentation available.

9. mapMaybeBagM :: Monad m => (a -> m (Maybe b)) -> Bag a -> m (Bag b)

   ghc	GHC.Data.Bag

   No documentation available.

10. mapMaybeFsEnv :: (elt1 -> Maybe elt2) -> FastStringEnv elt1 -> FastStringEnv elt2

    ghc	GHC.Data.FastString.Env

    No documentation available.

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