From: Florian Frank <flori@...>
Date: 2007-08-03T09:41:24+09:00
Subject: Re: finalizer not getting called

Florian Frank wrote:
> Another possibility is to use a binding, that doesn't

Ahmmm. Let's continue here: ...contain the value, perhaps
TOPLEVEL_BINDING and evaluate a string in this context:

class A
   def initialize
      ObjectSpace.define_finalizer(self,
       eval('proc{|id| puts "finalizing #{id}"}', TOPLEVEL_BINDING))
   end
end

def foo
   a = A.new
end
foo # don't taint the toplevel
GC.start
sleep(5)
puts 'exiting'

Like I said, it's not pretty to use finalizers in Ruby and you perhaps
shouldn't. Using the yield pattern mentioned by Alex Young is perhaps a
better solution to your problem.

-- 
Florian Frank