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I am aware of boost ptr_containers for 1D: http://www.boost.org/doc/libs/1_46_1/libs/ptr_container/doc/reference.html
Should I extend to 2D using a vector<ptr_vector<BaseClass> > ?
Yes, using a
vectorofptr_containersis easy and safe. I don’t believe there’s a special class for 2D polymorphic container anywhere.