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Within LTS Haskell 24.21 (ghc-9.10.3)

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1. maybeDoubleQuotes :: Bool -> Doc -> Doc

   pretty	Text.PrettyPrint.HughesPJ

   Apply doubleQuotes to Doc if boolean is true.

2. maybeParens :: Bool -> Doc -> Doc

   pretty	Text.PrettyPrint.HughesPJ

   Apply parens to Doc if boolean is true.

3. maybeQuotes :: Bool -> Doc -> Doc

   pretty	Text.PrettyPrint.HughesPJ

   Apply quotes to Doc if boolean is true.

4. maybeM :: Monad m => m b -> (a -> m b) -> m (Maybe a) -> m b

   extra	Control.Monad.Extra

   Monadic generalisation of maybe.

5. maybeToEither :: a -> Maybe b -> Either a b

   extra	Data.Either.Extra

   Given a Maybe, convert it to an Either, providing a suitable value for the Left should the value be Nothing.

   \a b -> maybeToEither a (Just b) == Right b
   \a -> maybeToEither a Nothing == Left a
   

6. maybeM :: Monad m => m b -> (a -> m b) -> m (Maybe a) -> m b

   extra	Extra

   Monadic generalisation of maybe.

7. maybeToEither :: a -> Maybe b -> Either a b

   extra	Extra

   Given a Maybe, convert it to an Either, providing a suitable value for the Left should the value be Nothing.

   \a b -> maybeToEither a (Just b) == Right b
   \a -> maybeToEither a Nothing == Left a
   

8. maybeLeft :: Either a b -> Maybe a

   utility-ht	Data.Either.HT

   No documentation available.

9. maybeRight :: Either a b -> Maybe b

   utility-ht	Data.Either.HT

   No documentation available.

10. maybePrefixOf :: Eq a => [a] -> [a] -> Maybe [a]

    utility-ht	Data.List.HT

    maybePrefixOf xs ys is Just zs if xs is a prefix of ys, where zs is ys without the prefix xs. Otherwise it is Nothing. It is the same as stripPrefix.

    >>> maybePrefixOf "abc" "abcdef"
    Just "def"
    
    >>> maybePrefixOf "def" "abcdef"
    Nothing
    

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