VarargTest.scala

object VarargTest {
 
  abstract class OptionBase
  case class Width(s: String) extends OptionBase
  case object HasSearch extends OptionBase
  case class Title(s: String) extends OptionBase
  implicit def strToOption(s:String) : OptionBase = Title(s)
 
  def func(options: OptionBase*) {
    options.foreach(o => println("option = [%s]".format(o)))
  }
 
  def main(args: Array[String]) {
    func()
    func("String promoted to Title()")
    func(Title("My title"))
    func(Title("Another title"), HasSearch)
    func(Width("100px"))
  }
 
}