From: Robert Klemme <bob.news@...>
Date: 2004-05-18T18:13:49+09:00
Subject: Re: Why do #dup and #clone behave differently with respect to instance methods


"ts" <decoux@moulon.inra.fr> schrieb im Newsbeitrag
news:200405180806.i4I86o026601@moulon.inra.fr...
> >>>>> "R" == Robert Klemme <bob.news@gmx.net> writes:
>
> R> Sounds reasonable.  Still *something* strikes me as odd: #class still
> R> returns the original class.  Why doesn't it return the singleton
class?
>
>  #class always return the class of the object.
>
> R> One *could* expect something different here.  Any comments?
>
>    class A
>    end
>
>    a = A.new
>    b = A.new
>
>    class << a
>       def a
>       end
>    end
>
>    p a.class == b.class
>
>
>  Now do you really expect 'false' ?

Well, I don't since I know it's done otherwise in Ruby.  But, one *could*
reasonably.  Still (A === a) == true and (A === b) == true.  I just wanted
to point out that although there is this anonymous class of the instance
it's not accessible in any way I know of (other than iterating through
ObjectSpace maybe).

An alternative would be that "class << a" could return this singleton
class...

Regards

    robert