Is there a way mix in the Ordered trait for a covariant generic?
I have the following code:
trait Foo[+T <: Foo[T]] extends Ordered[T] {
def id: Int
override def compare(that : T) : Int = {
this.id compare that.id
}
}
Where I need T covariant and would like ordered to work too. The version above gives the "covariant type in contravariant position error".