From: Christoph <swap@...> (news_chr)
Date: 2003-07-26T07:02:51+09:00
Subject: Re: Trouble with inherited

"Steve Tuckner" <STUCKNER@MULTITECH.COM> wrote
....
> In my case, I am interested in getting a string that would be specific to
> that class (and not the class name). I am using this name as a hash key
from
> the name to the class.
>
> Now I can simply save the class in a list and then when the hash would be
> used later, I can simply generate the hash at that time for each request.
> This seems not as elegant but probably is not much of a real speed
penalty.
>
> Is there a better more elegant way of doing this?

Basically you have to delay things until the information in your
subclass becomes available. For example you could define a thread
in inherited which checks for this information at fixed time intervals
or something like this

---
class A
  def self.singleton_method_added(sym)
    super
    unless self.equal?(A) or sym != :my_name
      name = self.my_name
      puts "the inheriting classes name is '#{name}'"
    end
  end
end

class B < A
 class << self
   def my_name
        "the B class"
   end
 end
end
---

(This probably doesn't work with 1.6 ..)


/Christoph