DeadEnd

DeadEnd is a terminal stage that never produces an output value. Every invocation returns Yield.None(Status.Complete), immediately signalling that the pipeline is finished. The yield is pre-built and cached to avoid allocation on each call.

DeadEnd is the natural end-of-stream marker. It is also returned by Countdown(n) when n ≤ 0.

An optional disposal hook can be supplied at construction via DeadEnd(_dispose). The companion object DeadEnd is a default no-op instance.

import h8io.stages.*
import h8io.stages.std.*

DeadEnd("anything")
// res0: Yield[Any, Nothing, Nothing] = None(
//   status = Complete(),
//   evolution = DeadEnd(_dispose = <function0>)
// )
DeadEnd(42)
// res1: Yield[Any, Nothing, Nothing] = None(
//   status = Complete(),
//   evolution = DeadEnd(_dispose = <function0>)
// )