Random team pick

pick_random.scala

import scala.util.Random
import scala.util.Try
import scala.collection.immutable.Stream

object PickRandom extends App {
  def picksValid(picksStr: String) =
    Try(picksStr.toInt).filter(_ > 0).isSuccess

  override def main(args: Array[String]) {
    val picksRequired = args.toList match {
      case picksStr :: _ if picksValid(picksStr) => picksStr.toInt
      case _ => 1
    }
    val winOptions = Set("Home", "Away")
    val winBy = Random.nextInt(30)
    val picks = Stream.continually(Random.shuffle(winOptions).head)
                      .take(picksRequired)

    // e.g.
    // scala pick_random.scala 3
    // 3 Away Away Home
    println(s"${winBy} "+picks.mkString(" "))
  }
}