https://cppcon.org/ https://github.com/CppCon/CppCon2020/blob/main/Presentations/back_to_basics_smart_pointers/back_to_basics_smart_pointers__rainer_grimm__cppcon_2020.pdf

From the library’s perspective, an essential feature in C++11 was smart pointers.

Since C++11, we have four different smart pointer: std::auto_ptr, std::unique_ptr, std::shared_pointer, and std::weak_ptr. With C++17 std::auto_ptr was removed and with C++20, we get an std::atomic＜std::shared_ptr＞, and …