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1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

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

   refined-containers	Data.Map.Strict.Refined

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

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

   refined-containers	Data.Map.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.

8. flattenMaybe :: ProjectableMaybe p => p (Maybe (Maybe a)) -> p (Maybe a)

   relational-record	Database.Relational.Documentation

   Compose nested Maybe phantom type on record.

9. fromMaybe :: (OperatorContext c, HasColumnConstraint NotNull r) => Record c r -> Record c (Maybe r) -> Record c r

   relational-record	Database.Relational.Documentation

   Operator from maybe type using record extended isNull.

10. negateMaybe :: (OperatorContext c, Num a) => Record c (Maybe a) -> Record c (Maybe a)

    relational-record	Database.Relational.Documentation

    Number negate uni-operator corresponding SQL -.

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