ghc-8.4.0.20171214: The GHC API

Safe Haskell	None
Language	Haskell2010

Pair

Documentation

data Pair a Source #

Constructors

Pair
Fields pFst :: a pSnd :: a

Instances

Functor Pair #
Instance details Methods fmap :: (a -> b) -> Pair a -> Pair b Source # (<$) :: a -> Pair b -> Pair a Source #
Applicative Pair #
Instance details Methods pure :: a -> Pair a Source # (<>) :: Pair (a -> b) -> Pair a -> Pair b Source # liftA2 :: (a -> b -> c) -> Pair a -> Pair b -> Pair c Source # (>) :: Pair a -> Pair b -> Pair b Source # (<*) :: Pair a -> Pair b -> Pair a Source #
Foldable Pair #
Instance details Methods fold :: Monoid m => Pair m -> m Source # foldMap :: Monoid m => (a -> m) -> Pair a -> m Source # foldr :: (a -> b -> b) -> b -> Pair a -> b Source # foldr' :: (a -> b -> b) -> b -> Pair a -> b Source # foldl :: (b -> a -> b) -> b -> Pair a -> b Source # foldl' :: (b -> a -> b) -> b -> Pair a -> b Source # foldr1 :: (a -> a -> a) -> Pair a -> a Source # foldl1 :: (a -> a -> a) -> Pair a -> a Source # toList :: Pair a -> [a] Source # null :: Pair a -> Bool Source # length :: Pair a -> Int Source # elem :: Eq a => a -> Pair a -> Bool Source # maximum :: Ord a => Pair a -> a Source # minimum :: Ord a => Pair a -> a Source # sum :: Num a => Pair a -> a Source # product :: Num a => Pair a -> a Source #
Traversable Pair #
Instance details Methods traverse :: Applicative f => (a -> f b) -> Pair a -> f (Pair b) Source # sequenceA :: Applicative f => Pair (f a) -> f (Pair a) Source # mapM :: Monad m => (a -> m b) -> Pair a -> m (Pair b) Source # sequence :: Monad m => Pair (m a) -> m (Pair a) Source #
Semigroup a => Semigroup (Pair a) #
Instance details Methods (<>) :: Pair a -> Pair a -> Pair a Source # sconcat :: NonEmpty (Pair a) -> Pair a Source # stimes :: Integral b => b -> Pair a -> Pair a Source #
(Semigroup a, Monoid a) => Monoid (Pair a) #
Instance details Methods mempty :: Pair a Source # mappend :: Pair a -> Pair a -> Pair a Source # mconcat :: [Pair a] -> Pair a Source #
Outputable a => Outputable (Pair a) #
Instance details Methods ppr :: Pair a -> SDoc Source # pprPrec :: Rational -> Pair a -> SDoc Source #

unPair :: Pair a -> (a, a) Source #

toPair :: (a, a) -> Pair a Source #

swap :: Pair a -> Pair a Source #

pLiftFst :: (a -> a) -> Pair a -> Pair a Source #

pLiftSnd :: (a -> a) -> Pair a -> Pair a Source #