Deep copy of 2D array in Scala?

Question

How do I do a deep copy of a 2D array in Scala?

For example

val a = Array[Array[Int]](2,3)
a(1,0) = 12

I want val b to copy values of a but without pointing to the same array.

Answer 1

You can use the clone method of the Array class. For a multi-dimensional Array, use map on the extra dimensions. For your example, you get

val b = a.map(_.clone)