hi, Qzi Difference between reference and weak refence is very similar to the difference between tr1::shared_ptr and tr1::weak_ptr. weak (reference/smart pointer) is necessary for avoiding reference cycle.
Say, A and B are instances of Reference<>(shared_ptr<>). If A hold a reference of B and B hold a reference of A, we call these two objects have an refernce cycle. A and B won't release even if they are out of their life cricle, and this is why we need weak reference. The attachment is an sample of weak_ptr, you can run it and find out why weak_ptr can break reference cycle. And you will get your answer. Regards, hanbo 2010/5/16 Qzi er <hotseason...@gmail.com> > what's the deference between weak reference and hard reference ? > > I can't understande the wiki below ! > > > http://wiki.services.openoffice.org/wiki/Documentation/DevGuide/ProUNO/C%2B%2B/Using_Weak_References > > Is there other core code show what is weak distinguish hard ? > -- > 作智慧的减法 ... > > 体会生活的微妙的富足 ... > > 嗯 ... >
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