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Within LTS Haskell 24.39 (ghc-9.10.3)

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  1. stateZoomMaybe :: forall k m (is :: IxList) t s c . (Is k An_AffineTraversal, Monad m) => Optic' k is t s -> (s -> m (c, s)) -> t -> m (Maybe c, t)

    optics-extra Optics.Extra.Internal.Zoom

    No documentation available.

  2. magnifyMaybe :: forall k (is :: IxList) c . (Magnify m n b a, Is k An_AffineFold) => Optic' k is a b -> m c -> n (Maybe c)

    optics-extra Optics.Zoom

    No documentation available.

  3. zoomMaybe :: forall k (is :: IxList) c . (Zoom m n s t, Is k An_AffineTraversal) => Optic' k is t s -> m c -> n (Maybe c)

    optics-extra Optics.Zoom

    No documentation available.

  4. optionType_maybe :: OptionType a -> OptionType (Maybe a)

    options Options

    Store an option as a Maybe of another type The value will be Nothing if the option is set to an empty string.

  5. queryMaybe' :: MonadQuery m => Relation p r -> m (PlaceHolders p, Record Flat (Maybe r))

    relational-query Database.Relational

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

  6. class ProjectableFlattenMaybe a b

    relational-query Database.Relational.Arrow

    Interface to compose phantom Maybe nested type.

  7. class ProjectableMaybe (p :: Type -> Type)

    relational-query Database.Relational.Arrow

    Interface to control Maybe of phantom type in records.

  8. avgMaybe :: (Num a, Fractional b, AggregatedContext ac, SqlContext ac) => Record Flat (Maybe a) -> Record ac (Maybe b)

    relational-query Database.Relational.Arrow

    Aggregation function AVG.

  9. caseMaybe :: (OperatorContext c, PersistableWidth b) => Record c a -> [(Record c a, Record c (Maybe b))] -> Record c (Maybe b)

    relational-query Database.Relational.Arrow

    Null default version of case'.

  10. caseSearchMaybe :: (OperatorContext c, PersistableWidth a) => [(Predicate c, Record c (Maybe a))] -> Record c (Maybe a)

    relational-query Database.Relational.Arrow

    Null default version of caseSearch.

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