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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)
}
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