From: Robert Klemme <shortcutter@...>
Date: 2007-06-07T00:35:10+09:00
Subject: Re: #<Object:0x2c1c8f0> <--- why is the displayed number == object_id*2

On 06.06.2007 17:10, Meinrad Recheis wrote:
> irb(main):001:0> VERSION
> => "1.8.5"
> irb(main):002:0> o=Object.new
> => #<Object:0x2c1c8f0>
> irb(main):003:0> ObjectSpace._id2ref 0x2c1c8f0
> RangeError: 0x2c1c8f0 is not id value
>        from (irb):3:in `_id2ref'
>        from (irb):3
> irb(main):004:0> ObjectSpace._id2ref 0x2c1c8f0/2
> => #<Object:0x2c1c8f0>
> irb(main):005:0>
> 
> I think that is pretty confusing. I am sure there is a good reason for
> this. But, don't you think it'd be better to display the real
> object_id instead of the doubled value?

The output of #inspect is not meant to give you any means to get at the 
original object although it may seem so at times.  Having said that, 
#object_id and #inspect are completely unrelated and it's just an 
implementation artifact that some classes actually return something that 
resembles the object id.

As far as I remember this list you are the first one that mentions this. 
  So it's probably not that big an issue (at least not as confusing as 
"singleton class" :-))

Kind regards

	robert