Next.Producer.State

State actions

null :: forall action item. Monad action => StateT (Producer action item) action Bool

Test whether the state is an empty stream

head :: forall action item. Monad action => StateT (Producer action item) action (Step item)

Peek at the first item in the stream state

push :: forall up action item. Monad action => item -> StateT (ProducerPlus up action item) action ()

Add an item to the front of the stream state

pop :: forall action item. Monad action => StateT (Producer action item) action (Step item)

Take the first item from the stream