From: "ara.t.howard" <ara.t.howard@...>
Date: 2007-10-28T23:27:19+09:00
Subject: Re: JRuby disabling ObjectSpace: what implications?


On Oct 28, 2007, at 1:16 AM, Charles Oliver Nutter wrote:

>
> Are there other places _id2ref is used?

i use it quite often as a way to have meta-programming 'storage'  
without polluting instances:

foo = method :foo

module_eval <<-code
  def foo(*a, &b)
    ObjectSpace._id2ref(#{ foo.id }).bind(self).call(*a, &b)
  end
code

which is fabricated - but you get the concept: string in eval maps to  
live object at run time.  when #define_method takes a block this  
won't be used much i think though...

cheers.

a @ http://codeforpeople.com/
--
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