to ask an container instance to suicide
Diez B. Roggisch
deets at nospam.web.de
Mon Nov 20 15:30:33 CET 2006
jm.suresh at no.spam.gmail.com wrote:
> I have containers to hold geometrical objects. The members in these
> containers can again be containers them self. Now, In the program I
> would be moving objects from one container to another. In this process,
> If the number of members in one of the containers becomes just one, I
> want to delete that container and have only its only member in place of
> it in the parent container.
> I have implemented setting and getting the container members using
> Right now, I am planning to do this this way:
> Maintain a reference to parent container in each container.
> When the condition is detected, do self.parent.deleteObject(self) .
> def deleteObject(self,memberId):
> index = self._members.index(memberId)
> self._members[index] = memberId._members
> del memberId
> Will this work. Or is there any other simple way to do this?
I wouldn't implement it this way. I'd rather have a reducer in place - it is
benefitial to have a way of visiting you tree of objects. Then you could
employ a reducing-scheme that will replace childnodes of a node with their
single child as optimization.
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