From: Yohanes Santoso <ysantoso@...>
Date: 2002-11-09T08:35:17+09:00
Subject: Re: Multi-dimensional (like 2) arrays in Ruby

"Ted" <ted@datacomm.com> writes:

> All of the replies say the same thing -- this is good.
> My learning project for Ruby is implementing a turning grille cipher. I want to allocate a n*m matrix where n and m are read from stdin.
> 
> I have the n[] (the rows) array, no sweat.  But the m part (the columns) is rather elusive.
> 
> Here's my latest code:
> 
> @m = Array.new(@rows)
> @M = @m.each {|row|                #=> warning, 'row' is always nil here
>      @m[row] =                     #=> == @m[nil] which is invalid
>         Array.new(@cols)}

matrix=Array.new(@rows)
0.upto(@rows-1) {|i| matrix[i] = Array.new(@cols)}

YS.