Efficient iteration with index in Scala

Question

Since Scala does not have old Java style for loops with index,

// does not work
val xs = Array(\"first\", \"second\", \"third\")
for (i=0; i<         


        

Answer 1

A simple and efficient way, inspired from the implementation of transform in SeqLike.scala

    var i = 0
    xs foreach { el =>
      println("String #" + i + " is " + xs(i))
      i += 1
    }