Control.Comonad.Store

ComonadStore class

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

Minimal complete definition

pos, peek

Methods

pos :: w a -> s

peek :: s -> w a -> a

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

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

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

experiment :: Functor f => (s -> f s) -> w a -> f a

Instances

ComonadStore s w => ComonadStore s (EnvT e w)

Defined in Control.Comonad.Store.Class

Methods

pos :: EnvT e w a -> s

peek :: s -> EnvT e w a -> a

peeks :: (s -> s) -> EnvT e w a -> a

seek :: s -> EnvT e w a -> EnvT e w a

seeks :: (s -> s) -> EnvT e w a -> EnvT e w a

experiment :: Functor f => (s -> f s) -> EnvT e w a -> f a

Comonad w => ComonadStore s (StoreT s w)

Defined in Control.Comonad.Store.Class

Methods

pos :: StoreT s w a -> s

peek :: s -> StoreT s w a -> a

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

seek :: s -> StoreT s w a -> StoreT s w a

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

experiment :: Functor f => (s -> f s) -> StoreT s w a -> f a

(ComonadStore s w, Monoid m) => ComonadStore s (TracedT m w)

Defined in Control.Comonad.Store.Class

Methods

pos :: TracedT m w a -> s

peek :: s -> TracedT m w a -> a

peeks :: (s -> s) -> TracedT m w a -> a

seek :: s -> TracedT m w a -> TracedT m w a

seeks :: (s -> s) -> TracedT m w a -> TracedT m w a

experiment :: Functor f => (s -> f s) -> TracedT m w a -> f a

ComonadStore s w => ComonadStore s (IdentityT w)

Defined in Control.Comonad.Store.Class

Methods

pos :: IdentityT w a -> s

peek :: s -> IdentityT w a -> a

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

seek :: s -> IdentityT w a -> IdentityT w a

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

experiment :: Functor f => (s -> f s) -> IdentityT w a -> f a

The Store comonad

type Store s = StoreT s Identity

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

Create a Store using an accessor function and a stored value

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

The StoreT comonad transformer

data StoreT s w a

Constructors

StoreT (w (s -> a)) s

Instances

ComonadEnv e w => ComonadEnv e (StoreT t w)

Defined in Control.Comonad.Env.Class

Methods

ask :: StoreT t w a -> e

Comonad w => ComonadStore s (StoreT s w)

Defined in Control.Comonad.Store.Class

Methods

pos :: StoreT s w a -> s

peek :: s -> StoreT s w a -> a

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

seek :: s -> StoreT s w a -> StoreT s w a

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

experiment :: Functor f => (s -> f s) -> StoreT s w a -> f a

ComonadTraced m w => ComonadTraced m (StoreT s w)

Defined in Control.Comonad.Traced.Class

Methods

trace :: m -> StoreT s w a -> a

ComonadHoist (StoreT s)

Defined in Control.Comonad.Trans.Store

Methods

cohoist :: (Comonad w, Comonad v) => (forall x. w x -> v x) -> StoreT s w a -> StoreT s v a

ComonadTrans (StoreT s)

Defined in Control.Comonad.Trans.Store

Methods

lower :: Comonad w => StoreT s w a -> w a

(Applicative w, Monoid s) => Applicative (StoreT s w)

Defined in Control.Comonad.Trans.Store

Methods

pure :: a -> StoreT s w a

(<*>) :: StoreT s w (a -> b) -> StoreT s w a -> StoreT s w b

liftA2 :: (a -> b -> c) -> StoreT s w a -> StoreT s w b -> StoreT s w c

(*>) :: StoreT s w a -> StoreT s w b -> StoreT s w b

(<*) :: StoreT s w a -> StoreT s w b -> StoreT s w a

Functor w => Functor (StoreT s w)

Defined in Control.Comonad.Trans.Store

Methods

fmap :: (a -> b) -> StoreT s w a -> StoreT s w b

(<$) :: a -> StoreT s w b -> StoreT s w a

Comonad w => Comonad (StoreT s w)

Defined in Control.Comonad.Trans.Store

Methods

extract :: StoreT s w a -> a

duplicate :: StoreT s w a -> StoreT s w (StoreT s w a)

extend :: (StoreT s w a -> b) -> StoreT s w a -> StoreT s w b

(ComonadApply w, Semigroup s) => ComonadApply (StoreT s w)

Defined in Control.Comonad.Trans.Store

Methods

(<@>) :: StoreT s w (a -> b) -> StoreT s w a -> StoreT s w b

(@>) :: StoreT s w a -> StoreT s w b -> StoreT s w b

(<@) :: StoreT s w a -> StoreT s w b -> StoreT s w a

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

Re-exported modules

module Control.Comonad

module Control.Comonad.Trans.Class