From: ts <decoux@...>
Date: 2006-05-11T02:05:03+09:00
Subject: Re: class << my_instance and class variables

>>>>> "R" == Raphael Bauduin <rblists@gmail.com> writes:

R> So methods are added to the object specific class (the metaclass as
R> identified in why's article), but class variables are added to the
R> class of which the object is an instance.

 Well, no. class variables (i.e @@) are added in the class which is
 cuurently in scope.

R> Further on this, if I defined a second instance and try to call test:
R> b=A.new(6)
R> b.test

 When you do this, ruby find the method Kernel#test which is a private
 method. This is why it give a warning.

R> so it seems it was added to A, but marked as private.

 No, it was added to the singleton class of `a', you have just chosen a bad
 name for your method (test) :-)

R> Oh, and about my initial question: how bad is the warning I get?

 ruby is trying to say that the variable @@v will be defined in Object,
 because there is no other class where it can define it.


Guy Decoux