TODO: C++ STL comparator adapter

generic-comparator-adapter.cc

// external
struct Object;
bool compare(Object& l, Object& r);
std::vector<Object*> objects;

// <TODO>
template<class T, class Comparator>
Comparator<T*> adaptToPtr(Comparator<T&> cmp) {
  // adapt comparator of T& to T*
  // must work for both functions and functors
}
// </TODO>

// this should work
std::sort(objects.begin(), objects.end(), adaptToPtr(compare));


// and so should this

struct Compare {
  bool operator()(Object& l, Object& r);
};

std::sort(objects.begin(), objects.end(), adaptToPtr(Compare));