From: Sam Sungshik Kong <ssk@...>
Date: 2004-06-22T14:08:13+09:00
Subject: Re: A question about Class and Object

With your help, my brain starts building up concepts...:)
Thank you.

For those who have same problems as mine, read the following link.
http://rubyforge.org/docman/view.php/251/96/ChrisPine_UROM.ppt
It's great.

kong

"Mehr, Assaph (Assaph)" <assaph@avaya.com> wrote in message
news:338366A6D2E2CA4C9DAEAE652E12A1DE166E16@au3010avexu1.global.avaya.com...
> > Object.class is Class.
> > Object is type of Class.
>
> > I'm still confused with class and object and metaclass...
>
> Try to think about it this way:
> Object is a concept ("a thing")
> Class is a concept ("a representation in ruby of realworld concepts")
>
> In ruby, we use objects (things) of kind 'Class' to represent the
> concepts. Thus the thingy 'Object' is of kind 'Class' and is used to
> represent the concept of object. The thingy 'Class' is again of type
> 'Class' and is used to represent the ruby concept of a "concept that
> represents the concept of 'concept'" (This makes it a meta-concept).
>
> Thus in Ruby "Object" and "Class" are concept thingies, represented as
> objects (thingies) of kind "Class". As for the number of methods, the
> class-concept is a bit more specific than the generic "thingy" concept,
> and therefore has an extra method.
>
> I have probably confused you more. See the 'ruby object model"
> presentation on "WhyRuby.rubyforge.org".
>
> HTH,
> Assaph
>
>
>
>
>