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import scala.{specialized => spec}
trait GrandParent[@spec(Int) -A] {
def foo(a: A): Unit
def bar[B <: A](b: B): Unit = println("grandparent got: %s" format b)
}
trait Parent[@spec(Int) -A] extends GrandParent[A] {
def foo(a: A) = bar(a)
}
class IntChild extends Parent[Int] {
override def bar[B <: Int](b: B): Unit = println("int child got: %s" format b)
}
class AnyChild extends Parent[Any] {
override def bar[B <: Any](b: B): Unit = println("any child got: %s" format b)
}
object Test {
def main(args: Array[String]) {
new IntChild().foo(33)
new AnyChild().foo(33)
}
}
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