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Within LTS Haskell 24.51 (ghc-9.10.3)

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  1. maybeReader :: (String -> Maybe a) -> ReadM a

    optparse-applicative Options.Applicative

    Convert a function producing a Maybe into a reader.

  2. maybeReader :: (String -> Maybe a) -> ReadM a

    optparse-applicative Options.Applicative.Builder

    Convert a function producing a Maybe into a reader.

  3. maybeC :: forall (m :: Type -> Type) i o a . Monad m => ConduitT i o m (Maybe a) -> ConduitT i o (MaybeT m) a

    conduit Data.Conduit.Lift

    Wrap the base monad in MaybeT Since 1.0.11

  4. maybeNew :: MonadIO m => (a -> m (Ptr b)) -> Maybe a -> m (Ptr b)

    unliftio UnliftIO.Foreign

    Lifted maybeNew.

  5. maybePeek :: MonadUnliftIO m => (Ptr a -> m b) -> Ptr a -> m (Maybe b)

    unliftio UnliftIO.Foreign

    Unlifted maybePeek.

  6. maybeWith :: MonadIO m => (a -> (Ptr b -> m c) -> m c) -> Maybe a -> (Ptr b -> m c) -> m c

    unliftio UnliftIO.Foreign

    Lifted maybeWith.

  7. maybeBraces :: Bool -> Doc a -> Doc a

    pretty Text.PrettyPrint.Annotated.HughesPJ

    Apply braces to Doc if boolean is true.

  8. maybeBrackets :: Bool -> Doc a -> Doc a

    pretty Text.PrettyPrint.Annotated.HughesPJ

    Apply brackets to Doc if boolean is true.

  9. maybeDoubleQuotes :: Bool -> Doc a -> Doc a

    pretty Text.PrettyPrint.Annotated.HughesPJ

    Apply doubleQuotes to Doc if boolean is true.

  10. maybeParens :: Bool -> Doc a -> Doc a

    pretty Text.PrettyPrint.Annotated.HughesPJ

    Apply parens to Doc if boolean is true.

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