From: lostboard2001@... (gene tan)
Date: 2004-11-23T16:38:02+09:00
Subject: immed. values, classes w/o new(), non-marshallables

Posted to Rubyforum, I thought I'd try here too.  I'm trying to
understand what, if anything, these three groups of slippery objects
have in common:

- Immediate values (Fixnum, SYmbol, true, false, nil), that
ObjectSpace doesn't see

- objects e.g. literal strings that don't construct thru Class#new
(meaning they don't run new() in overriden form or super() form
either)

- objects that can't be marshalled: proc/method objects, singleton and
IO objs, etc, see page 535 of pickaxe 2.

Gene