Context.View

Documentation

data View ctx

A View provides a read-only view into a Store. View trades the Store ability to register new context for the ability to arbitrarily transform context values locally to the View.

Since: 0.1.1.0

Instances

Functor View

Defined in Context.Internal

Methods

fmap :: (a -> b) -> View a -> View b

(<$) :: a -> View b -> View a

view :: (MonadIO m, MonadThrow m) => View ctx -> m ctx

Provide the calling thread a view of its current context from the specified View. Throws a NotFoundException when the calling thread has no registered context.

Since: 0.1.1.0

viewMay :: MonadIO m => View ctx -> m (Maybe ctx)

Provide the calling thread a view of its current context from the specified View, if present.

Since: 0.1.1.0

toView :: Store ctx -> View ctx

Create a View from the provided Store.

Since: 0.1.1.0