Control.Functor.Zap

Dual (bi)Functors

Documentation

class Zap f g | f -> g, g -> f where

Minimum definition: zapWith

Methods

zapWith :: (a -> b -> c) -> f a -> g b -> c

zap :: f (a -> b) -> g a -> b

Instances

Zap Identity Identity

Zap ((->) e) ((,) e)

Zap (Reader e) (Coreader e)

(>$<) :: Zap f g => f (a -> b) -> g a -> b

class Bizap p q | p -> q, q -> p where

Minimum definition: bizapWith

Methods

bizapWith :: (a -> c -> e) -> (b -> d -> e) -> p a b -> q c d -> e

bizap :: p (a -> c) (b -> c) -> q a b -> c

Instances

Bizap Either (,)

Bizap (,) Either

(Bizap p q, Zap f g, Zap i j) => Bizap (Biff p f i) (Biff q g j)

(>>$<<) :: Bizap p q => p (a -> c) (b -> c) -> q a b -> c