case-like-eg.scala

scala> new Foo(1, "one")
res0: Foo = Foo(1,one)

scala> new Foo(1, "one").hashCode
res1: Int = 113585

scala> new Foo(1, "one").hashCode
res2: Int = 113585

scala> new Foo(1, "one") == new Foo(1, "one")
res3: Boolean = true

scala> new Foo(1, "one") == new Foo(1, "one!")
res4: Boolean = false

scala> new Foo(1, "one") eq new Foo(1, "one") 
res5: Boolean = false

scala> new Foo(1, "one").toString            
res6: String = Foo(1,one)

scala> Set(new Foo(1, "one"), new Foo(2, "two"), new Foo(1, "one"), new Foo(2, "two"))
res7: scala.collection.immutable.Set[Foo] = Set(Foo(1,one), Foo(2,two))