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Within LTS Haskell 24.39 (ghc-9.10.3)
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showNumMaybe :: (SqlContext c, Num a, IsString b) => Record c (Maybe a) -> Record c (Maybe b)relational-schemas Database.Custom.SQLite3 Unsafely show number into string-like type in records.
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relational-schemas Database.Custom.SQLite3 Aggregation function SUM.
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.
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strict-base-types Data.Maybe.Strict Analogous to catMaybes in Data.Maybe.
fromMaybe :: a -> Maybe a -> astrict-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.
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strict-base-types Data.Maybe.Strict Analogous to listToMaybe in Data.Maybe.
mapMaybe :: (a -> Maybe b) -> [a] -> [b]strict-base-types Data.Maybe.Strict Analogous to mapMaybe in Data.Maybe.
hoistMaybe :: forall (m :: Type -> Type) x a . Monad m => x -> Maybe a -> EitherT x m atransformers-either Control.Monad.Trans.Either liftMaybeK :: forall (m :: Type -> Type) a . Applicative m => MaybeK a -> MaybeKT m aunification-fd Control.Monad.MaybeK Lift an MaybeK into an MaybeKT.
lowerMaybeK :: Applicative m => MaybeKT m a -> m (MaybeK a)unification-fd Control.Monad.MaybeK Lower an MaybeKT into an MaybeK.