> I'm not sure if it's a good idea to let an item disappear from your > inventory by a weak reference disappearing. It seems a little shaky > to not know where your objects are being referenced, but that's yout > decision.
OK, imagine a MUD, where players can "dig out" new rooms. Room A has a door that holds reference to newly created room B. By "using" a door, player is transported to room B. At later time someone destroys room B. Using strong references, I have to remove room B from list of rooms, and also remove door to room B, as it holds reference to room B. To do that, I have to keep list of doors that lead to room B. Using weak references, I don't have to worry about removing all doors to room B. They all now have a dead reference, which better models actual situation. If part of mine collapses, or if a module on space station is destroyed, the passage to that location does not magically vanish - it's just obstructed. Can you please tell me if there's something wrong with my reasoning? -- http://mail.python.org/mailman/listinfo/python-list
