Menu
How do I create an array of multiple dimensions?
For example, I want an integer or double matrix, something like double[][] in Java.
I know for a fact that arrays changed in Scala 2.8 and that the old arrays are deprecated, but are there multiple ways to do it now and if yes, which is best?
516
You can create a multidimensional array by creating a 2-D matrix first, and then extending it. For example, first define a 3-by-3 matrix as the first page in a 3-D array. Now add a second page. To do this, assign another 3-by-3 matrix to the index value 2 in the third dimension.
Scala programming language has defined an inbuilt method ofDim() to create a multidimensional array.
Like so:
scala> Array.ofDim[Double](2, 2, 2)
res2: Array[Array[Array[Double]]] = Array(Array(Array(0.0, 0.0), Array(0.0, 0.0)), Array(Array(0.0, 0.0), Array(0.0, 0.0)))
scala> {val (x, y) = (2, 3); Array.tabulate(x, y)( (x, y) => x + y )}
res3: Array[Array[Int]] = Array(Array(0, 1, 2), Array(1, 2, 3))
It's deprecated. Companion object exports factory methods ofDim:
val cube = Array.ofDim[Float](8, 8, 8)
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
