From: Intransition <transfire@...>
Date: 2010-12-03T08:18:49+09:00
Subject: Re: Singleton class, metaclass, eigenclass: what do they mean?



On Dec 2, 5:50 pm, Tony Arcieri <tony.arci...@medioh.com> wrote:
> On Thu, Dec 2, 2010 at 11:50 AM, Intransition <transf...@gmail.com> wrote:
> > The terms singleton class, eigenclass and metaclass are. Which I
> > believe was the question.
>
> Yeah, thanks for the clarification everyone. I talked to a Ruby implementer
> who agrees these three terms are interchangeable.
>
> The confusion arose for me from "singleton methods", whose name comes from
> things like rb_define_singleton_method() (in the C API) and the
> singleton_method_callback.
>
> I still see a lot of confusion as to what to call the object which
> represents a class. "Singleton class" made sense to me in that context...
> there is only one object, its class is Class, and as far as I can tell
> singleton methods are instance-specific behaviors of this object.
>
> So what is the proper term for the object (with "singleton methods") that
> represents a class but is not its singleton class/metaclass/eigenclass?
>
> How fucking confusing...

http://www.hokstad.com/ruby-object-model.html