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object Days extends Enumeration {
type Day = DayValue
val Mon, Tue, Wed, Thu, Fri, Sat, Sun = new DayValue // DayValue
protected class DayValue extends Val {
def isWeekday: Boolean =
this match {
case Sun => false
case Sat => false
case _ => true
}
}
}
object Test extends App {
def dayElementsShouldBeNamed(): List[String] =
Days.values.toList.sorted.map(x => x.toString)
def nameOfMon(): String = {
import Days._
val d: Day = Mon
d.toString
}
def nameOfTue(): String = {
import Days._
val d: Day = Tue
d.toString
}
println(dayElementsShouldBeNamed())
println(nameOfMon())
println(nameOfTue())
println(nameOfMon())
}
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