Data.Bifunctor.Swap

Documentation

class Swap p where

Symmetric Bifunctors.

swap . swap = id

If p is a Bifunctor the following property is assumed to hold:

swap . bimap f g = bimap g f . swap

Swap isn't a subclass of Bifunctor, as for example

>>> newtype Bipredicate a b = Bipredicate (a -> b -> Bool)

is not a Bifunctor but has Swap instance

>>> instance Swap Bipredicate where swap (Bipredicate p) = Bipredicate (flip p)

Methods

swap :: p a b -> p b a

Instances

Swap Either

Defined in Data.Bifunctor.Swap

Methods

swap :: Either a b -> Either b a

Swap (,)

Defined in Data.Bifunctor.Swap

Methods

swap :: (a, b) -> (b, a)

Swap ((,,) x)

Defined in Data.Bifunctor.Swap

Methods

swap :: (x, a, b) -> (x, b, a)

Swap ((,,,) x y)

Defined in Data.Bifunctor.Swap

Methods

swap :: (x, y, a, b) -> (x, y, b, a)

Swap ((,,,,) x y z)

Defined in Data.Bifunctor.Swap

Methods

swap :: (x, y, z, a, b) -> (x, y, z, b, a)

Swap ((,,,,,) x y z w)

Defined in Data.Bifunctor.Swap

Methods

swap :: (x, y, z, w, a, b) -> (x, y, z, w, b, a)

Swap ((,,,,,,) x y z w v)

Defined in Data.Bifunctor.Swap

Methods

swap :: (x, y, z, w, v, a, b) -> (x, y, z, w, v, b, a)