From: Gavin Sinclair <gsinclair@...>
Date: 2002-10-13T19:29:15+09:00
Subject: Re: Things That Newcomers to Ruby Should Know


----- Original Message -----
From: "Brian Candler" <B.Candler@pobox.com>
> >
> > When I discovered this some time ago, I wondered deeply what might be
occupying
> > id #s 2, 4, 6, ...
>
> Other objects. A few predefined ones:
>
> irb(main):001:0> false.id
> 0
> irb(main):002:0> true.id
> 2
> irb(main):003:0> nil.id
> 4
>
> and others dynamically allocated, where the id is (I presume) a pointer to
> the data structure. I haven't looked at the source, but I posted a guessed
> explanation of why fixnums have odd ids at ruby-talk:53040.

All my objects seem to start somewhere around 13000000!

It was interesting, but I don't see how the ID of an object can be a pointer,
in the traditional sense.  I imagine a lookup table.  I'm interested in this,
and this might give me my first reason to examine the source code.

>
> Brian.

Gavin