comonads-fd-1.7: Comonad transformers using functional dependencies

Portabilitynon-portable (fundeps, MPTCs)
Stabilityexperimental
MaintainerEdward Kmett <ekmett@gmail.com>

Control.Comonad.Store.Memo

Contents

Description

 

Synopsis

ComonadStore class

class Comonad w => ComonadStore s w | w -> s whereSource

Methods

pos :: w a -> sSource

peek :: s -> w a -> aSource

peeks :: (s -> s) -> w a -> aSource

seek :: s -> w a -> w aSource

seeks :: (s -> s) -> w a -> w aSource

The Store comonad

type Store s = StoreT s Identity

store :: (s -> a) -> s -> Store s a

runStore :: Store s a -> (s -> a, s)

The StoreT comonad transformer

data StoreT s w a

Instances

storeT :: Functor w => w (s -> a) -> s -> StoreT s w a

runStoreT :: StoreT s w a -> (w (s -> a), s)

Re-exported modules