Control.Effect.Map.Lazy

Lazy interpretations of the Map' effect.

If you don't require disambiguation of multiple map effects (i.e., you only have one map effect in your monadic context), you usually need the untagged interpretations.

Interpreter Type

data LazyMap k v m a

The lazy interpreter of the map effect. This type implements the Map' type class in a lazy manner.

When interpreting the effect, you usually don't interact with this type directly, but instead use one of its corresponding interpretation functions.

Instances

(Monad m, Ord k2) => Map' (tag :: k1) k2 v (LazyMap k2 v m)

Defined in Control.Effect.Map.Lazy

Methods

clear' :: LazyMap k2 v m ()

lookup' :: k2 -> LazyMap k2 v m (Maybe v)

update' :: k2 -> Maybe v -> LazyMap k2 v m ()

MonadBase b m => MonadBase b (LazyMap k v m)

Defined in Control.Effect.Map.Lazy

Methods

liftBase :: b α -> LazyMap k v m α

MonadBaseControl b m => MonadBaseControl b (LazyMap k v m)

Defined in Control.Effect.Map.Lazy

Associated Types

type StM (LazyMap k v m) a

Methods

liftBaseWith :: (RunInBase (LazyMap k v m) b -> b a) -> LazyMap k v m a

restoreM :: StM (LazyMap k v m) a -> LazyMap k v m a

MonadTrans (LazyMap k v)

Defined in Control.Effect.Map.Lazy

Methods

lift :: Monad m => m a -> LazyMap k v m a

MonadTransControl (LazyMap k v)

Defined in Control.Effect.Map.Lazy

Associated Types

type StT (LazyMap k v) a

Methods

liftWith :: Monad m => (Run (LazyMap k v) -> m a) -> LazyMap k v m a

restoreT :: Monad m => m (StT (LazyMap k v) a) -> LazyMap k v m a

Monad m => Monad (LazyMap k v m)

Defined in Control.Effect.Map.Lazy

Methods

(>>=) :: LazyMap k v m a -> (a -> LazyMap k v m b) -> LazyMap k v m b

(>>) :: LazyMap k v m a -> LazyMap k v m b -> LazyMap k v m b

return :: a -> LazyMap k v m a

Functor m => Functor (LazyMap k v m)

Defined in Control.Effect.Map.Lazy

Methods

fmap :: (a -> b) -> LazyMap k v m a -> LazyMap k v m b

(<$) :: a -> LazyMap k v m b -> LazyMap k v m a

Monad m => Applicative (LazyMap k v m)

Defined in Control.Effect.Map.Lazy

Methods

pure :: a -> LazyMap k v m a

(<*>) :: LazyMap k v m (a -> b) -> LazyMap k v m a -> LazyMap k v m b

liftA2 :: (a -> b -> c) -> LazyMap k v m a -> LazyMap k v m b -> LazyMap k v m c

(*>) :: LazyMap k v m a -> LazyMap k v m b -> LazyMap k v m b

(<*) :: LazyMap k v m a -> LazyMap k v m b -> LazyMap k v m a

MonadIO m => MonadIO (LazyMap k v m)

Defined in Control.Effect.Map.Lazy

Methods

liftIO :: IO a -> LazyMap k v m a

type StT (LazyMap k v) a

Defined in Control.Effect.Map.Lazy

type StT (LazyMap k v) a = StT (StateT (Map k v)) a

type StM (LazyMap k v m) a

Defined in Control.Effect.Map.Lazy

type StM (LazyMap k v m) a = StM (StateT (Map k v) m) a

Tagged Interpretations

runMap'

Arguments

:: forall tag k v m a. Monad m

=> (Map' tag k v `Via` LazyMap k v) m a

The program whose map effect should be handled.

-> m a

The program with its map effect handled.

Runs the map effect, initialized with an empty map.

Untagged Interpretations

runMap :: Monad m => (Map k v `Via` LazyMap k v) m a -> m a

The untagged version of runMap'.