Joe O'Pecko jopecko
jopecko
/ auxpattern.scala
Created
July 6, 2021 02:08
— forked from gigiigig/auxpattern.scala
Aux Pattern
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| import shapeless._ | |
| import scalaz._ | |
| import Scalaz._ | |
| object console extends App { | |
| trait Foo[A] { | |
| type B | |
| def value: B |
jopecko
/ showProcessedCount.scala
Last active
July 27, 2022 18:05
— forked from kubukoz/showProcessedCount.scala
Periodically show the amount of elements produced by an fs2 stream
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| def showProcessedCount[F[_]: Concurrent: Timer, A]: Pipe[F, A, A] = stream => | |
| fs2.Stream.eval(Ref[F].of(0)).flatMap { count => | |
| stream.chunks | |
| .evalMap { chunk => | |
| count.update(_ + chunk.size).as(chunk) | |
| } | |
| .flatMap(fs2.Stream.chunk) | |
| .concurrently( | |
| fs2.Stream |
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