Cleaning up an STL list/vector of pointers

Question

What is the shortest chunk of C++ you can come up with to safely clean up a std::vector or std::list of pointers? (assuming you have to call delet

Answer 1

The following hack deletes the pointers when your list goes out of scope using RAII or if you call list::clear().

template 
class Deleter {
public:
  Deleter(T* pointer) : pointer_(pointer) { }
  Deleter(const Deleter& deleter) {
    Deleter* d = const_cast(&deleter);
    pointer_ = d->pointer_;
    d->pointer_ = 0;
  }
  ~Deleter() { delete pointer_; }
  T* pointer_;
};

Example:

std::list > foo_list;
foo_list.push_back(new Foo());
foo_list.clear();