From: Cameron McBride <cameron.mcbride@...>
Date: 2008-02-04T21:18:07+09:00
Subject: Re: creating a 2d array

On Feb 2, 2008 12:55 PM, Adam Akhtar <adamtemporary@gmail.com> wrote:
> Hi im just coming to ruby from C albeit after many years of no
> programming. Im trying the simple matrix problem to get used to dealing
> with arrays in ruby.

There is a matrix class in the stdlib.  But if you're doing anything
numeric, I'd recommend using NArray.

> How do you create a blank 2d array?
>
> I want to ask the user for the number of rows and columns and then
> create a blank 2d array using those dimensions. From there I'd populate
> it with the users desired data.

Todd's suggestion will work, but I prefer:
rows, cols = 2,3
mat = Array.new(rows) { Array.new(cols) }

Cameron