From: matz@... (Yukihiro Matsumoto)
Date: 2001-01-18T03:59:47+09:00
Subject: [ruby-talk:9467] Re: Newbie question: call-by-reference

Hi,

In message "[ruby-talk:9466] Newbie question: call-by-reference"
    on 01/01/18, Marc Casaldaliga <casaldaliga@ifae.es> writes:

|Hello there, I�m just stuck on this. I�ve been searching the mailing
|list and found nothing, so it must be too obvious.
|But indeed, how could I get in a method call a reference to the argument
|--instead of the value--so I can modify it inside.

How about wrapping the value by an array?

  def incr(i)
      i[0]+=1
  end

  a = [0]
  incr(a)

Little bit ugly, but call by reference is conceptually ugly I
believe. ;-)

							matz.