I didn't plan to translate my own translation of Effective STL, afraid of affecting everyone :), just find some terms can't be found on the Internet, I have to translate myself. --Winter
In context, this clause should not be added, because the container containing ATUO_PTR is originally prohibited in STL. Even if you use it, the compiler will not compile your code. The Standards Committee did not explain why it is not possible. I should not say anything for COAPS, because your compiler should do everything for you, all such similar code should not be compiled.
Read more "Effective STL Terms 8: Don't put auto_ptrs into the container"