From: Alex Young <alex@...>
Date: 2007-08-17T01:25:36+09:00
Subject: Re: Does singleton variables have any meaning ?

Arno J. wrote:
> Hello,
> 
> I would like to have a confirmation about the fact that singleton
> variables just don't have any meaning, or an explation about how to use
> them.
> An example to be sure that we are talking about the same thing :
> 
> class A
> 
>   @class_instance_variable
> 
>   class << self  #or class << A
> 
>     @singleton_variable # <- Can this be used/called elsewhere ?
> 
>     def some_method
>       @class_instance_variable
>     end
> 
>   end
> 
> end
> 
> Thanks
class A
   class << self
     @singleton_variable
     attr_accessor :singleton_variable # <----- N.B.
   end
end
irb(main):035:0> A.singleton_variable = :foo
=> :foo
irb(main):037:0> A.singleton_variable
=> :foo

That's how I use them...

-- 
Alex