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1. mapMaybe :: forall s k a b . (a -> Maybe b) -> HashMap s k a -> SomeHashMapWith (SupersetProof 'Hashed s) k b

   refined-containers	Data.HashMap.Refined

   Apply a function to all values in a map and collect only the Just results, returning a potentially smaller map.

2. mapMaybeWithKey :: (Key s k -> a -> Maybe b) -> HashMap s k a -> SomeHashMapWith (SupersetProof 'Hashed s) k b

   refined-containers	Data.HashMap.Refined

   Apply a function to all values in a map, together with their corresponding keys, and collect only the Just results, returning a potentially smaller map.

3. mapMaybe :: forall s k a b . (a -> Maybe b) -> HashMap s k a -> SomeHashMapWith (SupersetProof 'Hashed s) k b

   refined-containers	Data.HashMap.Strict.Refined

   Apply a function to all values in a map and collect only the Just results, returning a potentially smaller map.

4. mapMaybeWithKey :: (Key s k -> a -> Maybe b) -> HashMap s k a -> SomeHashMapWith (SupersetProof 'Hashed s) k b

   refined-containers	Data.HashMap.Strict.Refined

   Apply a function to all values in a map, together with their corresponding keys, and collect only the Just results, returning a potentially smaller map.

5. mapMaybe :: forall s a b . (a -> Maybe b) -> IntMap s a -> SomeIntMapWith (SupersetProof 'Int s) b

   refined-containers	Data.IntMap.Refined

   Apply a function to all values in a map and collect only the Just results, returning a potentially smaller map.

6. mapMaybeWithKey :: (Key s -> a -> Maybe b) -> IntMap s a -> SomeIntMapWith (SupersetProof 'Int s) b

   refined-containers	Data.IntMap.Refined

   Apply a function to all values in a map, together with their corresponding keys, and collect only the Just results, returning a potentially smaller map.

7. mapMaybe :: forall s a b . (a -> Maybe b) -> IntMap s a -> SomeIntMapWith (SupersetProof 'Int s) b

   refined-containers	Data.IntMap.Strict.Refined

   Apply a function to all values in a map and collect only the Just results, returning a potentially smaller map.

8. mapMaybeWithKey :: (Key s -> a -> Maybe b) -> IntMap s a -> SomeIntMapWith (SupersetProof 'Int s) b

   refined-containers	Data.IntMap.Strict.Refined

   Apply a function to all values in a map, together with their corresponding keys, and collect only the Just results, returning a potentially smaller map.

9. mapMaybe :: forall s k a b . (a -> Maybe b) -> Map s k a -> SomeMapWith (SupersetProof 'Regular s) k b

   refined-containers	Data.Map.Refined

   Apply a function to all values in a map and collect only the Just results, returning a potentially smaller map.

10. mapMaybeWithKey :: (Key s k -> a -> Maybe b) -> Map s k a -> SomeMapWith (SupersetProof 'Regular s) k b

    refined-containers	Data.Map.Refined

    Apply a function to all values in a map, together with their corresponding keys, and collect only the Just results, returning a potentially smaller map.

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