From: Christoph Rippel <crippel@...>
Date: 2000-12-21T03:32:53+09:00
Subject: [ruby-talk:7784] Re: Some private_instance_method are not private_methods?

> -----Original Message-----
> From: Yukihiro Matsumoto [mailto:matz@zetabits.com]
> Sent: Wednesday, December 20, 2000 08:18 AM
> To: ruby-talk ML
> Subject: [ruby-talk:7774] Re: Some private_instance_method are not
> private_methods?
> 
> 
> Hi,
> 
> In message "[ruby-talk:7766] Some private_instance_method are not 
> private_methods?"
>     on 00/12/20, "Christoph Rippel" <crippel@primenet.com> writes:
> 
> |I am still trying to get a full grasp of the Modulo concept -  running 
> |-------------------------
> |def diff(aModule)
> |    aModule.private_instance_methods- aModule.private_methods
> |end
> 
> You are subtracting set of aModule's private methods from set of
> private instance methods of an instance of a class which includes
> aModule.  The result would be nonsense.  Get it?
> 
> 							matz.
Bingo,
Class.ancestors # [Class, Module, Object, Kernel]

the problem is that Andy & Dave's book states that Class is a sub-class 
of Module which wrong (they have to fix this in the next edition).

Christoph