Safe Haskell | Safe |
---|---|
Language | Haskell2010 |
Control.Functor.Polyvariant.Quadcontravariant
Documentation
class Quadcontravariant t where Source #
Minimal complete definition
Methods
quadcontramap :: (b -> a) -> (d -> c) -> (f -> e) -> (h -> g) -> t a c e g -> t b d f h Source #