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Within LTS Haskell 24.5 (ghc-9.10.2)

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1. mapMaybeOccEnv :: (a -> Maybe b) -> OccEnv a -> OccEnv b

   ghc-lib	GHC.Plugins

   mapMaybe for b OccEnv.

2. mapMaybeFvRn :: (a -> RnM (b, FreeVars)) -> Maybe a -> RnM (Maybe b, FreeVars)

   ghc-lib	GHC.Rename.Utils

   No documentation available.

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

   language-c	Language.C.Analysis.TravMonad

   No documentation available.

4. mapMaybeM :: (Monad m, Functor m) => (a -> m (Maybe b)) -> [a] -> m [b]

   monad-extras	Control.Monad.Extra

   A monadic version of mapMaybe :: (a -> Maybe b) -> [a] -> [b].

5. 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.

6. 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.

7. 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.

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. 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.

10. 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.

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