Hoogle Search

Within LTS Haskell 24.32 (ghc-9.10.3)

Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.

Exact lookup

1. mapAsWord128 :: ByteArray bs => (Word128 -> Word128) -> bs -> bs

   memory	Data.ByteArray.Mapping

   map blocks of 128 bits of a bytearray, creating a new bytestring of equivalent size where each blocks has been mapped through f no length checking is done. unsafe

2. mapAsWord64 :: ByteArray bs => (Word64 -> Word64) -> bs -> bs

   memory	Data.ByteArray.Mapping

   map blocks of 64 bits of a bytearray, creating a new bytestring of equivalent size where each blocks has been mapped through f no length checking is done. unsafe

3. mapParseError :: Ord e' => (e -> e') -> ParseError s e -> ParseError s e'

   megaparsec	Text.Megaparsec.Error

   Modify the custom data component in a parse error. This could be done via fmap if not for the Ord constraint.

4. mapMaybeM :: Monad m => (a -> m (Maybe b)) -> [a] -> m [b]

   extra	Control.Monad.Extra

   A version of mapMaybe that works with a monadic predicate.

5. mapLeft :: (a -> c) -> Either a b -> Either c b

   extra	Data.Either.Extra

   The mapLeft function takes a function and applies it to an Either value iff the value takes the form Left _.

   mapLeft show (Left 1) == Left "1"
   mapLeft show (Right True) == Right True
   

6. mapRight :: (b -> c) -> Either a b -> Either a c

   extra	Data.Either.Extra

   The mapRight function takes a function and applies it to an Either value iff the value takes the form Right _.

   mapRight show (Left 1) == Left 1
   mapRight show (Right True) == Right "True"
   

7. mapLeft :: (a -> c) -> Either a b -> Either c b

   extra	Extra

   The mapLeft function takes a function and applies it to an Either value iff the value takes the form Left _.

   mapLeft show (Left 1) == Left "1"
   mapLeft show (Right True) == Right True
   

8. mapMaybeM :: Monad m => (a -> m (Maybe b)) -> [a] -> m [b]

   extra	Extra

   A version of mapMaybe that works with a monadic predicate.

9. mapRight :: (b -> c) -> Either a b -> Either a c

   extra	Extra

   The mapRight function takes a function and applies it to an Either value iff the value takes the form Right _.

   mapRight show (Left 1) == Left 1
   mapRight show (Right True) == Right "True"
   

10. mappend :: Monoid a => a -> a -> a

    validity	Data.Validity

    An associative operation NOTE: This method is redundant and has the default implementation mappend = (<>) since base-4.11.0.0. Should it be implemented manually, since mappend is a synonym for (<>), it is expected that the two functions are defined the same way. In a future GHC release mappend will be removed from Monoid.

Page 119 of many | Previous | Next