Create and populate two-dimensional array in Scala

Question

What's the recommended way of creating a pre-populated two-dimensional array in Scala? I've got the following code:

val map = for {
    x <- (1 to size).toList
} yield for {
        y <- (1 to size).toList
    } yield (x, y)

How do I make an array instead of list? Replacing .toList with .toArray doesn't compile. And is there a more concise or readable way of doing this than the nested for expressions?

Answer 1

On Scala 2.7, use Array.range:

for {
  x <- Array.range(1, 3)
} yield for {
  y <- Array.range(1, 3)
} yield (x, y)

On Scala 2.8, use Array.tabulate:

Array.tabulate(3,3)((x, y) => (x, y))