ref: b4a7a0d4c04ad0fb96d0b279d35da2658d58a0e1
dir: /lib/Data/Functor.hs/
module Data.Functor(
Functor(..),
($>),
(<$>),
(<&>),
unzip,
void,
) where
import Prelude() -- do not import Prelude
import Primitives -- for fixity
import Data.Function
class Functor f where
fmap :: forall a b . (a -> b) -> f a -> f b
(<$) :: forall a b . a -> f b -> f a
(<$) = fmap . const
infixl 4 <$>
(<$>) :: forall f a b . Functor f => (a -> b) -> f a -> f b
(<$>) = fmap
infixl 1 <&>
(<&>) :: Functor f => f a -> (a -> b) -> f b
(<&>) = flip (<$>)
infixl 4 $>
($>) :: Functor f => f a -> b -> f b
($>) = flip (<$)
unzip :: Functor f => f (a, b) -> (f a, f b)
unzip xs = ( (\(a,_)->a) <$> xs,
(\(_,b)->b) <$> xs )
void :: forall f a . Functor f => f a -> f ()
void = fmap (const ())