From: Josh Knowles <joshknowles@...>
Date: 2006-03-29T08:09:05+09:00
Subject: Re: Opposite of ||= pattern?

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On 3/28/06, Matthew Moss <matthew.moss.coder@gmail.com> wrote:
>
> You could make a class "Once" to wrap your value.



 class Object
   def once
     @used ? nil : (@used =3D true; self)
   end
 end

test =3D true

3.times { p test.once }
=3D> true
=3D> nil
=3D> nil

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