[ruby-talk:04290] Re: ObjectSpace.add_finalizer?

On Tue, 1 Aug 2000, Yukihiro Matsumoto wrote:

> Hi,
> 
Hi and thanks for your reply,

> You have to invoke call_finalizer(obj) to arrange finalizer to be
> called upon which object (I know it's a bad name).  In addition,
> _id2ref(id) may not work, since finalizers are executed AFTER object
> destruction.
> 
LibRef Change proposal to Dave and/or Andy:

IMHO, the example in the Lib reference on ObjectSpace.call_finalizer is
somewhat misleading:

--------
ObjectSpace.add_finalizer Proc.new {|id|
  print "Good bye ", id, "=", ObjectSpace._id2ref(id), "\n"
}
a = "String one"
b = "String two"
ObjectSpace.call_finalizer(a)
ObjectSpace.call_finalizer(b)
print "We exit now...\n"
--------

since _id2ref may not work and the example does not produce the result
you'd expect. ("We exit now..." but not the two "Good bye..." strings...)

Regards,

Robert