ZIO learning - return distinct random numbers / published by https://github.com/dacr/code-examples-manager #48d37087-114f-4c7d-a932-69257a54390e/351473ae99848ce36048fb723e0efdfd66a47a9a

zio-learning-9-random.sc

// summary : ZIO learning - return distinct random numbers
// keywords : scala, zio, learning, pure-functional, @testable
// publish : gist
// authors : David Crosson
// license : Apache License Version 2.0 (https://www.apache.org/licenses/LICENSE-2.0.txt)
// id : 48d37087-114f-4c7d-a932-69257a54390e
// created-on : 2021-04-02T16:22:22+02:00
// 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 "fr.janalyse::zio-worksheet:2.0.13.0"
// ---------------------

import zio.*, zio.worksheet.*

val randomLogic = for {
  n <- ZIO.iterate(Set.empty[Long])(_.size < 5)(s => Random.nextLongBetween(1, 20).map(s + _))
  _ <- Console.printLine("Chosen numbers : " + n.toList.sorted.mkString(", "))
} yield ()

randomLogic.unsafeRun