Scala: how can I sort an array of tuples by their second element?

Question

is there a way in Scala to sort an array of tuples using and arbitrary comparison function? In particular I need to sort and array of tuples by their second element, but I wante

Answer 1

On Scala 2.8 (yes, again :), you can also do this:

val v = Array(('a', 2), ('b', 1))
scala.util.Sorting.stableSort(v)(manifest[(Char, Int)], Ordering.by(_._2))

In the specific case of pairs, this can also work to sort first by the second element, and then by the first:

scala.util.Sorting.stableSort(v)(manifest[(Char, Int)], Ordering.by(_.swap))