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Within LTS Haskell 24.51 (ghc-9.10.3)

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1. uniqueQueryMaybe' :: UniqueRelation p c r -> QueryUnique (PlaceHolders p, Record c (Maybe r))

   relational-schemas	Database.Custom.SQLite3

   Join unique sub-query with place-holder parameter p. Query result is Maybe.

2. catMaybes :: [Maybe a] -> [a]

   strict-base-types	Data.Maybe.Strict

   Analogous to catMaybes in Data.Maybe.

3. fromMaybe :: a -> Maybe a -> a

   strict-base-types	Data.Maybe.Strict

   Given a default value and a Maybe, yield the default value if the Maybe argument is Nothing and extract the value out of the Just otherwise.

4. listToMaybe :: [a] -> Maybe a

   strict-base-types	Data.Maybe.Strict

   Analogous to listToMaybe in Data.Maybe.

5. mapMaybe :: (a -> Maybe b) -> [a] -> [b]

   strict-base-types	Data.Maybe.Strict

   Analogous to mapMaybe in Data.Maybe.

6. hoistMaybe :: forall (m :: Type -> Type) x a . Monad m => x -> Maybe a -> EitherT x m a

   transformers-either	Control.Monad.Trans.Either

   Hoist Maybe a into Right a.

7. liftMaybeK :: forall (m :: Type -> Type) a . Applicative m => MaybeK a -> MaybeKT m a

   unification-fd	Control.Monad.MaybeK

   Lift an MaybeK into an MaybeKT.

8. lowerMaybeK :: Applicative m => MaybeKT m a -> m (MaybeK a)

   unification-fd	Control.Monad.MaybeK

   Lower an MaybeKT into an MaybeK.

9. runMaybeK :: MaybeK a -> Maybe a

   unification-fd	Control.Monad.MaybeK

   Execute the MaybeK and return the concrete Maybe encoding.

10. runMaybeKT :: Applicative m => MaybeKT m a -> m (Maybe a)

    unification-fd	Control.Monad.MaybeK

    Execute a MaybeKT and return the concrete Maybe encoding.

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