Control.Functor.HigherOrder

Neil Ghani and Particia Johann''s higher order functors from http://crab.rutgers.edu/~pjohann/tlca07-rev.pdf

Documentation

type AlgH f g = Natural (f g) g

type CoAlgH f g = Natural g (f g)

class HFunctor f where

Methods

ffmap :: Functor g => (a -> b) -> f g a -> f g b

hfmap :: Natural g h -> Natural (f g) (f h)

newtype FixH f a

Constructors

InH

Fields

outH :: f (FixH f) a