From: Nat Pryce <nat.pryce@...13media.com>
Date: 2002-11-26T22:13:27+09:00
Subject: Re: RCR: Stack, Queue alias methods in Array

On Tue, 2002-11-26 at 09:46, Martin DeMello wrote:
> Rationale: Ruby arrays can be easily used as stacks and queues, but it's
> distracting to have to stop and think about which end of the array
> you're working with.
> 
> Proposed aliases:
> 
> top <- last
> enqueue, append <- push
> dequeue <- shift
> head <- [0]
> tail <- last

How about defining these in modules, so that they can be included into
individual arrays or into the entire array class if needed.

E.g.

require 'arrayqueue'
require 'arraystack'

my_queue = [1,2,3]
my_queue.extend ArrayQueue

my_stack = [-1,-2,-3]
my_stack.extend ArrayStack

my_stack.push( my_queue.dequeue )
my_queue.enqueue( my_stack.pop )


Where arraystack.rb would contain:

module ArrayStack
    def push( value )
        ...
    end
    def pop
        ...
    end
    def top
        ...
    end
end

Etc. 

-- 
Nat Pryce <nat.pryce@b13media.com>
B13media