example for #3506

3506Example.scala

//> using lib "org.typelevel::cats-effect:3.4.8"

import cats.effect.{IO, IOApp}
import cats.effect.std.Dispatcher
import scala.concurrent.duration._

object Example extends IOApp.Simple {

  def run: IO[Unit] =
    Dispatcher.parallel[IO](await = true).use { dispatcher =>
      for {
        _ <- IO(dispatcher.unsafeRunAndForget(IO.print(" Scalar 2023").delayBy(5.millis)))
        _ <- IO(dispatcher.unsafeRunAndForget(IO.print("Hello")))
        // _ <- IO.sleep(100.millis)
      } yield ()
    } *> IO.blocking(System.out.flush())

}