From: Julian 'Julik' Tarkhanov <listbox@...>
Date: 2006-08-28T00:57:38+09:00
Subject: Re: Keep track of all instances of a class without losing GC?


On 27-aug-2006, at 16:45, Jez Stephens wrote:

> I want to be able to keep track of all instances of a class using
> something simple like this:
>
> Class Thing
>     @@allthings = []
>
>     def initialize
>         @@allthings.push self
>     end
> end

weakref might be of help indeed, you also can use lookups (3 extra  
lines):

class Thing
    @@things = []
     def self.things
         @@things.map{ | id | ObjectSpace._id2ref(id) }
     end

     def initialize
         @@things << self.object_id
     end
end

After that you might get lost references when object get garbage  
collected, but if you don't need that - what's the point ? :-)

-- 
Julian 'Julik' Tarkhanov
please send all personal mail to
me at julik.nl