From: Martin DeMello <martindemello@...>
Date: 2008-08-29T06:48:29+09:00
Subject: Re: Please don't flame me...why is there no "++" in Ruby again ?

On Thu, Aug 28, 2008 at 2:43 PM, Robert Dober <robert.dober@gmail.com> wrote:
> One could define ++ if one wanted, but it can only work on mutable objects
>
> class MyInteger
>  def initialize int;  @int = int end
>  define_method "++" do @int += 1 end
>  def to_s; @int.to_s end
> end
>
> m = MyInteger.new 41
> puts m
> m.send "++"
> puts m

Also note that this will not do what you expect from other languages

m = MyInteger.new 41
n = m
puts m
puts n
m.send "++"
puts m
puts n

martin