Provide a way to run a handler of e with a given input.

Note: f can be used to alter the return type of the effect handler. If that's unnecessary, use Provider_.

A restricted variant of Provider with unchanged return type of the effect handler.

Run the labeled Provider effect with a given effect handler.

Run the labeled Provider effect with a given effect handler that doesn't change its return type.

Run the effect handler.

Run the effect handler with unchanged return type.

Run the effect handler with a given input.

Run the effect handler that doesn't change its return type with a given input.

Assign a label to an effect.

Note: labeled effects are best used together with the effectful-plugin package, as it significantly improves their usability.

The constructor is for sending labeled operations of a dynamically dispatched effect to the handler:

>>> import Effectful.Dispatch.Dynamic

>>> :{
  data X :: Effect where
    X :: X m Int
  type instance DispatchOf X = Dynamic
:}

>>> :{
  runPureEff . runLabeled @"x" (interpret_ $ \X -> pure 333) $ do
    send $ Labeled @"x" X
:}
333