Scala example source code file (tcpoly_overriding.scala)

This example Scala source code file (tcpoly_overriding.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, a, app, app, b, list, list, test, test

The Scala tcpoly_overriding.scala source code

abstract class A[t[x]] {
  def b: t[Int]
}

class B extends A[List] {
    // underlying functionality being tested is overriding, but bugs manifest itself during erasure
    // erasure should generate two methods: one that returns an Object (to implement the method in A)
    // one that is as close as possible to the original method and thus returns a List
    // the problem only manifests itself here -- but it's really a problem with overriding
    // the link between this method and the method in A isn't seen
  def b: List[Int] = List(1)
}

object Test extends App {
  Console.println((new B).b(0))
}