How to get the element index when mapping an array in Scala?

Question

Let\'s consider a simple mapping example:

  val a = Array(\"One\", \"Two\", \"Three\")
  val b = a.map(s => myFn(s))

What I need is to use

Answer 1

What about this? I think it should be fast and it's pretty. But I'm no expert on Scala speed...

a.foldLeft(0) ((i, x) => {myFn(x, i); i + 1;} )