From: James Edward Gray II <james@...>
Date: 2006-08-16T22:08:05+09:00
Subject: Re: Nooby question : multidimensional arrays.

On Aug 16, 2006, at 4:37 AM, marinho.tobolla@syncity.de wrote:

> Well am I right, that in Ruby there are only one dimensional  
> arrays, and that i have to add an array into an array to get  
> multidimensional arrays, or is there a simpler more ruby like way  
> to create them ?

Others have given you great answers, but it's also worth pointing out  
that you can make a multidimensional Array, if you like:

 >> class Array2D
 >>   def initialize(width, height)
 >>     @data = Array.new(width) { Array.new(height) }
 >>   end
 >>   def [](x, y)
 >>     @data[x][y]
 >>   end
 >>   def []=(x, y, value)
 >>     @data[x][y] = value
 >>   end
 >> end
=> nil
 >> arr = Array2D.new(3, 2)
=> #<Array2D:0x31d0b0 @data=[[nil, nil], [nil, nil], [nil, nil]]>
 >> arr[1, 1] = "Hello"
=> "Hello"
 >> arr
=> #<Array2D:0x31d0b0 @data=[[nil, nil], [nil, "Hello"], [nil, nil]]>
 >> arr[1, 1]
=> "Hello"

James Edward Gray II