Scala/Loom example for a medium article

loom.sc

#!/usr/bin/env -S scala-cli shebang --scala-version 3.2.0 -J --enable-preview -J --add-modules=jdk.incubator.concurrent

import scala.util.Using
import java.util.concurrent.ScheduledThreadPoolExecutor
import jdk.incubator.concurrent.StructuredTaskScope

Thread.startVirtualThread(() => println("Hello from virtual thread"))
println("Hello from main thread")


Using(new StructuredTaskScope.ShutdownOnFailure()) { scope =>
  var aFuture = scope.fork(() => {
    println("Hello from structured scope thread 1")
    1
  })

  var bFuture = scope.fork(() => {
    println("Hello from structured scope thread 2")
    2
  })

  scope.join();
  scope.throwIfFailed();
  println("Hello from main thread")
  val a = aFuture.resultNow()
  val b = bFuture.resultNow()
  println(s"a = $a, b = $b")
}