Create multiple arrays in one line

Question

I did:

a, b = Array.new(2, [0, 0])
a[0] = 1

I have:

a # => [1, 0]

I have a problem with b, wh

Answer 1

This is mentioned here:

When sending the second parameter (to Array.new), the same object will be used as the value for all the array elements:

So, as @mudasobwa already suggested in the comments, you need to use the block version which uses the result of block for each element:

a, b = Array.new(2) { [0, 0] }
 => [[0, 0], [0, 0]]

a[0] = 1

a
 => [1, 0]

b
 => [0, 0]