It seems like the support for printing arrays is somewhat lacking in Scala. If you print one, you get the default garbage you'd get in Java:
scala> val array = Array.fill(2,2)(0)
array: Array[Array[Int]] = Array(Array(0, 0), Array(0, 0))
scala> println(array)
[[I@d2f01d
Furthermore, you cannot use the Java toString/deepToString methods from the java.util.Arrays class: (or at least I cannot figure it out)
scala> println(java.util.Arrays.deepToString(array))
<console>:7: error: type mismatch;
found : Array[Array[Int]]
required: Array[java.lang.Object]
println(java.util.Arrays.deepToString(array))
The best solution I could find for printing a 2D array is to do the following:
scala> println(array.map(_.mkString(" ")).mkString("\n"))
0 0
0 0
Is there a more idiomatic way of doing this?