Sort tuples by first element reverse, second element regular

Question

I have tuples of the form (Boolean, Int, String).

I want to define Ordering which sorts the tuples in the following order:

1. Boolean - revers

Answer 1

You could do something like this.

case class myTuple(t: (Boolean, Int, String)) extends Ordered[myTuple] {
    def compare(that: myTuple):Int = {
        val (x,y,z) =t
        val (x1,y1,z1) = that.t
        if (x.compare(x1) != 0) x.compare(x1)
        else {
          if (y.compare(y1) != 0) if (y.compare(y1) == 1) 0 else 1
          else z.compareTo(z1)
        }
   }
}

val myList = Array((false, 8, "zz"), (false,3, "bb"), (true, 5, "cc"),(false, 3,"dd"))

implicit def tupleToBeordered(t: (Boolean, Int, String)) = new myTuple(t._1,t._2,t._3)

myList.sorted