Scala example source code file (t1027.scala)

This example Scala source code file (t1027.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, boolean, boolean, comparable, comparable, string, t, t, t1027

The Scala t1027.scala source code

object T1027 extends App {
  trait Comparable[T <: Comparable[T]] { this: T =>
    def < (that: T): Boolean
    def <=(that: T): Boolean = this < that || this == that
    def > (that: T): Boolean = that < this
    def >=(that: T): Boolean = that <= this
  }
  class A(val x: String) extends Comparable[A]{
    def < (that: A) = this.x < that.x
  }
  val a = new A("a")
  val b = new A("b")
  println(a < b)
  println(a > b)
  println(a <= b)
  println(a >= b)
  println("Comparable traits : " + (new A("x") > new A("y")).toString)
 }