Hi, is there some utility (templated) adapter type class that I could use to construct an adapter such that an (associative) array of (pointers to) objects behaves like an (associative) array of a member variable of the objects? Something like class A { int val; }; std::map<int, shared_ptr<A> > container_type; container_type amap; shared_ptr<A> elem(new A()); amap[2] = elem; amap[4] = elem; amap[6] = elem; selector_adapter<container_type, &A::val> val_container(&amap); std::cout << val_container[4]; // should output amap[4]->val; --nico -- nico galoppo von borries @ address: 105 creel st., chapel hill comp. graphics phd. student @ north carolina, 27516 USA UNC, chapel hill @ phone: +1 (919) 962-1898 (office) @ +1 (919) 942-7609 (home) @ email: nico at cs dot unc dot edu @ homepage: http://www.cs.unc.edu/~nico --- debian linux :: vim powered