[boost] Weak pointers owning object

From: Bruno Martínez (br1_at_[hidden])
Date: 2003-06-16 22:39:06

Hi,
I was wondering if it was possible to have two weak pointers that together 
own an object. That is, if one of the two is destroyed the other fails to 
construct a shared_ptr, but as long as both exist the object is not 
destroyed, even if no other weak/shared ptr exists. This would come handy 
for implementing association classes.

Thanks 

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