2006/1/18, Stefan Kost <[EMAIL PROTECTED]>: > Hi, > Uzytkownik wrote: > > I'm so sorry - when should I use weak reference? > > > > I use waek references in the class collaboration hierarchy. Imagine classes > GGroup and GItem, where GGroup has GItems. GItem instances need access to > GGroup, thus they have a GGroup *container element;. When setting the > container > element for an item I use a weak ref to not introduce a circular dependency > (GGroup references GItem and GItem references GGroup). This works as whenever > GGroup gets destroyed it will release all GItems. > So one might ask when I take the weak_ref at all? I something is behaving > wrong > like I unref an GGroup too often, I will access dead memory. When using the > weak_ref the GGroup pointer will be set to NULL and my assertions will trigger > when doing checks like G_IS_GROUP(self->container). > > Hope that this makes any sense for you :) > > Stefan >
Yes. Thank you. Regards
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