Create two-dimensional arrays and access sub-arrays in Ruby

Question

I wonder if there\'s a possibility to create a two dimensional array and to quickly access any horizontal or vertical sub array in it?

I believe we can access a hor

Answer 1

Here is an easy way to create a "2D" array.

2.1.1 :004 > m=Array.new(3,Array.new(3,true))

=> [[true, true, true], [true, true, true], [true, true, true]]