Created
November 29, 2023 10:13
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Stream#evalTapChunk benchmark
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| package fs2 | |
| import cats.Applicative | |
| import cats.effect.{IO, IOApp} | |
| import cats.syntax.all._ | |
| /** https://github.com/typelevel/fs2/pull/3350 */ | |
| object StreamEvalTapChunk extends IOApp.Simple { | |
| implicit class StreamOps[F[_], O](s: Stream[F, O]) { | |
| def evalTapChunkNew[F2[x] >: F[x] : Applicative, O2](f: O => F2[O2]): Stream[F2, O] = { | |
| def tapOutChunk(o: Chunk[O]): Pull[F2, O, Unit] = Pull.eval(o.traverse_(f)) >> Pull.output(o) | |
| s.underlying.unconsFlatMap(tapOutChunk).streamNoScope | |
| } | |
| } | |
| def run: IO[Unit] = { | |
| val s = Stream(List.fill(100)(1): _*).repeatN(10000).covary[IO] | |
| s.evalTapChunkNew(IO.pure).compile.drain.replicateA_(500) >> | |
| IO.println("evalTapChunkNew") >> | |
| s.evalTapChunkNew(IO.pure).compile.drain.timed.map(_._1.toMillis).flatMap(IO.println).replicateA_(10) >> | |
| IO.println("evalTapChunk") >> | |
| s.evalTapChunk(IO.pure).compile.drain.timed.map(_._1.toMillis).flatMap(IO.println).replicateA_(10) | |
| } | |
| } |
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