Scala example source code file (bug1843.scala)

This example Scala source code file (bug1843.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

a, crash, integerupdatetype, integerupdatetype, list, nil, nil, requires, stateupdate, stateupdate, updatetype, updatetype

The Scala bug1843.scala source code

/**
* Scala Compiler Will Crash On this File
* ... Or Will It?
*
*/

object Crash {
  trait UpdateType[A]
  case class StateUpdate[A](updateType : UpdateType[A], value : A)
  case object IntegerUpdateType extends UpdateType[Integer]

  //However this method will cause a crash
  def crash(updates: List[StateUpdate[_]]) {
    updates match {
      case Nil =>
      case u::us =>
        u match {
          //Line below seems to be the crashing line
          case StateUpdate(key, newValue) if (key == IntegerUpdateType) =>
            println("Requires a statement to induce the crash")
          case _ =>
        }
    }
  }
}