| Type | Defined where? | Header | in C++98 containers? |
|---|---|---|---|
| std::auto_ptr | C++98 (deprecated) | <memory> | no (not copyable) |
| std::unique_ptr | C++11 | <memory> | no (C++11) |
| std::shared_ptr | C++11 | <memory> | no (C++11) |
| std::weak_ptr | C++11 | <memory> | no (C++11) |
| boost::scoped_ptr | Boost | <boost/scoped_ptr.hpp> | no (not copyable) |
| boost::shared_ptr | Boost | <boost/shared_ptr.hpp> | yes |
| boost::weak_ptr | Boost | <boost/weak_ptr.hpp> | yes |
| boost::intrusive_ptr | Boost | <boost/intrusive_ptr.hpp> | (?) |
Note the existence of boost::scoped_array and boost::shared_array if the pointer is created with new [] and released with delete [].