From: Lex Williams <etaern@...>
Date: 2008-08-28T14:48:37+09:00
Subject: Re: how to avoid passing by reference and how to copy objects

> create some NEW pointers but which point to the same memory space. If i 
> edit one of the members it will be reflected in both a and b. However if 
> i substitute it for a totally different member im guessing new memory 
> space is allocated and a pointer points to that new memory space. Hence 
> the change is reflected in only one array.
> 
> to get a copy where new memory space for duplicate objects is creted, 
> you look towards marshall..
> 
> am i right (roughly) ... hmmm pointers in C was always tricky.

Here is a little example

class XTest

   attr_accessor :test

   def initialize
      @test = 2
   end


end

first  = XTest.new
first.test = 10
second = first.clone
second.test = 11
puts first.test

So , If you want to preserve your parameters , clone them.
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