Scala example source code file (bug3683b.scala)

This example Scala source code file (bug3683b.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

bar, bar, foo, foo, int, main, w, w, x, x, xx, y, z

The Scala bug3683b.scala source code

sealed trait Foo
sealed trait Bar extends Foo
sealed trait W[T >: Bar <: Foo]
case class X() extends W[Foo]
case class XX() extends W[Bar]
case class Y() extends W[Bar]
case class Z[T >: Bar <: Foo](
  z1: W[T]
) extends W[T]

object Main {  
  // should fail for including X()
  def f1(w: W[Bar]): Int = {
    w match {
      case X() => 1
      case XX() => 2
      case Y() => 1
      case Z(z) => f1(z)
    }
  }
}