Question
Maybe it's just my lack of abilities to find stuff here that is the problem, but I can't find anything about how to create multidimensional arrays in Ruby.
Could someone please give me an example on how to do it?
Answer
Strictly speaking it is not possible to create multi dimensional arrays in Ruby. But it is possible to put an array in another array, which is almost the same as a multi dimensional array.
This is how you could create a 2D array in Ruby:
a = [[1,2,3], [4,5,6], [7,8,9]]
As stated in the comments, you could also use NArray which is a Ruby numerical array library:
require 'narray'
b = NArray[ [1,2,3], [4,5,6], [7,8,9] ]
Use a[i][j] to access the elements of the array. Basically a[i] returns
the 'sub array' stored on position i of a and thus a[i][j] returns
element number j from the array that is stored on position i.
