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  1. contramapMaybe :: (Profunctor p, Semigroupal (->) Either Either Either p) => (a -> Maybe b) -> p b x -> p a x

    monoidal-functors Data.Bifunctor.Monoidal.Specialized

    No documentation available.

  2. subtractMaybe :: Ord a => MultiSet a -> MultiSet a -> Maybe (MultiSet a)

    monoidmap-examples Data.MonoidMap.Examples.MultiSet

    No documentation available.

  3. TypedValueMaybe :: Maybe TypeValue -> TypeValue

    morpheus-graphql-code-gen-utils Data.Morpheus.CodeGen.Internal.AST

    No documentation available.

  4. parseMaybe :: (Ord e, Stream s) => Parsec e s a -> s -> Maybe a

    network-uri-template Network.URI.Template.Internal.Parse

    parseMaybe p input runs the parser p on input and returns the result inside Just on success and Nothing on failure. This function also parses eof, so if the parser doesn't consume all of its input, it will fail. The function is supposed to be useful for lightweight parsing, where error messages (and thus file names) are not important and entire input should be consumed. For example, it can be used for parsing of a single number according to a specification of its format.

  5. hoistMaybe :: forall e (es :: [Type]) m a . (MonadError (Variant es) m, CouldBe es e) => e -> Maybe a -> m a

    oops Control.Monad.Oops

    When the expression of type 'Maybe a' evaluates to Nothing, throw the specified value, otherwise return a.

  6. binaryspecMaybeFields :: WithNulls Binaryspec a b -> Binaryspec (MaybeFields a) (MaybeFields b)

    opaleye Opaleye.Adaptors

    No documentation available.

  7. distinctspecMaybeFields :: WithNulls Distinctspec a b -> Distinctspec (MaybeFields a) (MaybeFields b)

    opaleye Opaleye.Adaptors

    No documentation available.

  8. eqPPMaybeFields :: EqPP a b -> EqPP (MaybeFields a) (MaybeFields b)

    opaleye Opaleye.Adaptors

    No documentation available.

  9. fromFieldsMaybeFields :: FromFields fields haskells -> FromFields (MaybeFields fields) (Maybe haskells)

    opaleye Opaleye.Adaptors

    No documentation available.

  10. ifPPMaybeFields :: IfPP a b -> IfPP (MaybeFields a) (MaybeFields b)

    opaleye Opaleye.Adaptors

    No documentation available.

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