Initializing a 2D (multi-dimensional) array in Scala

Question

It\'s easy to initialize a 2D array (or, in fact, any multidimensional array) in Java by putting something like that:

int[][] x = new int[][] {
        { 3,          


        

Answer 1

Personally I'd suck it up and type out (or cut and paste) "Array" a few times for clarity's sake. Include the type annotation for safety, of course. But if you're really running out of e-ink, a quick easy hack would be simply to provide an alias for Array, for example:

val > = Array

val x: Array[Array[Int]] = >(
  >(3, 5, 7),
  >(0, 4, 9),
  >(1, 8, 6)
)

You could also provide a type alias for Array if you want to shorten the annotation:

type >[T] = Array[T]

val x: >[>[Int]] = ...