From: Simon Strandgaard <neoneye@...>
Date: 2004-02-26T00:29:46+09:00
Subject: Re: Operators +, += and = in Ruby 2

On Wed, 25 Feb 2004 16:12:16 +0100, Robert Klemme wrote:
[snip] 
> What do others think?  Did I overlook something?
> 

It would be really nice to be able to overload '+=', so that #close can be
invoked correct.

server> ruby a.rb
0
1
server> expand -t2 a.rb 
class A
  @@count = 0
  def initialize(value=nil)
    @value = value || 0
    @@count += 1
  end
  attr_reader :value
  def close
    @@count -= 1
  end
  def A.count
    @@count
  end
  def +(value)
    A.new(@value + value)
  end
end

p A.count
a = A.new
a += 5
a.close
p A.count
server>

--
Simon Strandgaard