ZIO learning - playing with streams - files list / published by https://github.com/dacr/code-examples-manager #11313cd2-63d7-4125-adcd-5bf489ba9451/c1b635fcfa1383eae73e75b3e563daf9a13f9701

zio-learning-streams-3-ls.sc

// summary : ZIO learning - playing with streams - files list
// keywords : scala, zio, learning, streams, @testable
// publish : gist
// authors : zio
// license : Apache License Version 2.0 (https://www.apache.org/licenses/LICENSE-2.0.txt)
// id : 11313cd2-63d7-4125-adcd-5bf489ba9451
// created-on : 2021-11-05T17:28:20.992Z
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

// ---------------------
//> using scala "3.4.2"
//> using dep "dev.zio::zio:2.0.13"
//> using dep "dev.zio::zio-streams:2.0.13"
// ---------------------

import zio._
import zio.stream._
import java.nio.file.{Paths, Files, Path}

object App extends ZIOAppDefault {

  def ls(directory: String) =
    for
      listFromPath <- ZIO.attempt(Path.of(directory))
      files        <- ZStream.fromJavaStream(Files.list(listFromPath)).runCollect
    yield files

  override def run =
    for
      directory <- ZIO.succeed("/tmp")
      results   <- ls(directory)
      _         <- ZIO.foreach(results)(path => Console.printLine(path))
    yield ()
}

App.main(Array.empty)