Toestand.Watches

data Watches a

Constructors

• Watches Int (Map Int (Listener a))

watches :: forall a. Watches a

Create a new Watches from a should notify predicate.

listen :: forall a. Listener a -> Watches a -> (Tuple Int (Watches a))

Add a change listener effect. Returns a key that can be used to unlisten along with modified watches.

notify :: forall a. Watches a -> Change a -> Effect (Change a)

Call back all the listeners with a change

unlisten :: forall a. Watches a -> Int -> Watches a

Remove the provided