From: Andrew Walrond <andrew@...>
Date: 2003-06-12T23:02:17+09:00
Subject: Re: does each work on a copy?



Rasputin wrote:
> This has me confused (It's getting to be a frequent experience).
> 
> ----------------8<----------------
> 
> SPACE = 1
> 
> a = Array.new(5)
> b = Array.new(5, SPACE)
> 
> a.each { |el|
>         el = SPACE
> }
> 

el is simply a reference to the array element. by el = SPACE simply 
makes el refer to SPACE instead; it has no effect on the array element

remember that pretty much everything is a reference and you won't go far 
wrong

Andrew Walrond