From: Daniel DeLorme <dan-ml@...42.com>
Date: 2007-06-25T08:06:44+09:00
Subject: Re: Helper to create multi-dimensional arrays

Anthony Martinez wrote:
> I came up with this method really quick to create x*y arrays in Ruby. It
> mimicks Array#new's behavior pretty closely wrt blocks, I hope. What do you all
> think?

What about making it more general than just x*y arrays?

class << Array
   def multi(n, *args, &block)
     if args.empty?
       Array.new(n, &block)
     else
       Array.new(n) do
         Array.multi(*args, &block)
       end
     end
   end
end

?> Array.multi(2){ 0 }
=> [0, 0]
 >> Array.multi(2,2){ 0 }
=> [[0, 0], [0, 0]]
 >> Array.multi(2,2,2){ 0 }
=> [[[0, 0], [0, 0]], [[0, 0], [0, 0]]]
 >> Array.multi(2,2,2,2){ 0 }



hehe, playing around is fun

Daniel