[Scala] hashCode impl test

A.scala

package com.komamitsu.hashcodetest

/**
 * @author komamitsu
 */
case class Foo(id: Int)
case class Bar(id: Int)
class Hoge(foo: Foo, bar: Bar) {
  override def hashCode : Int = foo.## + bar.##
}

object App {
  def main(args : Array[String]) {
    println(new Hoge(Foo(1), Bar(2)).##)
    println(new Hoge(Foo(2), Bar(1)).##)
  }
}

------------------------------------------------
> run
[info] Compiling 1 Scala source to /home/komamitsu/lab/scala/hashcodetest/hashcodetest/target/scala-2.9.1/classes...
[info] Running com.komamitsu.hashcodetest.App
-594061097
-594061097

B.scala

package com.komamitsu.hashcodetest

/**
 * @author komamitsu
 */
case class Foo(id: Int)
case class Bar(id: Int)
case class Hoge(foo: Foo, bar: Bar)

object App {
  def main(args : Array[String]) {
    println(Hoge(Foo(1), Bar(2)).##)
    println(Hoge(Foo(2), Bar(1)).##)
    println(Hoge(Foo(1), Bar(2)).##)
  }
}

------------------------------------------------
> run
[info] Compiling 1 Scala source to /home/komamitsu/lab/scala/hashcodetest/hashcodetest/target/scala-2.9.1/classes...
[info] Running com.komamitsu.hashcodetest.App
-656140924
-2107822807
-656140924