From: Barca Junior <wuzhengchun@...>
Date: 2008-01-06T00:07:26+09:00
Subject: Re: Fixnums can have instance variables?  Cool.


> 
> class Fixnum
>    attr_accessor :note
> end
> 
> 13.note = "a baker's dozen"
> 25.note = "5 squared"
> 
> notes = [13, 21, 25].collect { |x| x.note }    # ["a baker's dozen",
> nil, "5 squared"]
> 


It's really cool.
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