From: SpringFlowers AutumnMoon <summercoolness@...>
Date: 2007-09-25T09:40:49+09:00
Subject: Re: object_id 1, 2, 3

Rob Biedenharn wrote:

> I saw a flowchart somewhere (online?) that showed how the least-
> significant bits were used by the interpreter in the implementation
> of some "objects" which were both common and immutable (TrueClass,
> FalseClass, NilClass, Fixnum).
> 
> The LSB=1 is Fixnum (hence the object_id of n would be (n<<1)|0x01 in
> the underlying C code).


you mean the 2002, 2004, 20002, 20004, etc are all for other immutable 
objects?  what are they i wonder...  the negative numbers have their own 
negative object_id's.

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