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Within LTS Haskell 24.4 (ghc-9.10.2)

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1. mapMaybeWithKey :: Ord k => (k -> a -> Maybe b) -> MaxPQueue k a -> MaxPQueue k b

   pqueue	Data.PQueue.Prio.Max

   Map values and collect the Just results.

2. mapMaybeWithKey :: Ord k => (k -> a -> Maybe b) -> MinPQueue k a -> MinPQueue k b

   pqueue	Data.PQueue.Prio.Min

   Map values and collect the Just results.

3. mapMaybeWithKey :: (Int -> a -> Maybe b) -> MonoidalIntMap a -> MonoidalIntMap b

   monoidal-containers	Data.IntMap.Monoidal

   No documentation available.

4. mapMaybeWithKey :: (Int -> a -> Maybe b) -> MonoidalIntMap a -> MonoidalIntMap b

   monoidal-containers	Data.IntMap.Monoidal.Strict

   No documentation available.

5. mapMaybeWithKey :: (k -> a -> Maybe b) -> MonoidalMap k a -> MonoidalMap k b

   monoidal-containers	Data.Map.Monoidal

   No documentation available.

6. mapMaybeWithKey :: (k -> a -> Maybe b) -> MonoidalMap k a -> MonoidalMap k b

   monoidal-containers	Data.Map.Monoidal.Strict

   No documentation available.

7. mapMaybeWithKey :: (Key -> a -> Maybe b) -> NEIntMap a -> IntMap b

   nonempty-containers	Data.IntMap.NonEmpty

   O(n). Map keys/values and collect the Just results. Returns a potentially empty map (IntMap), because the function could potentially return Nothing on all items in the NEIntMap.

   let f k _ = if k < 5 then Just ("key : " ++ (show k)) else Nothing
   mapMaybeWithKey f (fromList ((5,"a") :| [(3,"b")])) == Data.IntMap.singleton 3 "key : 3"
   

8. mapMaybeWithKey :: (k -> a -> Maybe b) -> NEMap k a -> Map k b

   nonempty-containers	Data.Map.NonEmpty

   O(n). Map keys/values and collect the Just results. Returns a potentially empty map (Map), because the function could potentially return Nothing on all items in the NEMap.

   let f k _ = if k < 5 then Just ("key : " ++ (show k)) else Nothing
   mapMaybeWithKey f (fromList ((5,"a") :| [(3,"b")])) == Data.Map.singleton 3 "key : 3"
   

9. mapMaybeM :: Monad m => (a -> m (Maybe b)) -> Vector a -> m (Vector b)

   rebase	Rebase.Data.Vector

   No documentation available.

10. mapMaybeM :: Monad m => (a -> m (Maybe b)) -> Stream m a -> Stream m b

    rebase	Rebase.Data.Vector.Fusion.Stream.Monadic

    Apply monadic function to each element and drop all Nothings

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