Note above, the “delete” operator is safe to call on nullptr values, and it is also not necessary to set pointers to nullptr in destructors (since the object is

Note above, the “delete” operator is safe to call on nullptr values, and it is also not necessary to set pointers to nullptr in destructors (since the object is going away anyway). The example above therefore could just say “delete [] mem;” in the destructor with nothing else. Yet this is also a good example of why you wouldn’t need “delete” or a destructor at all, if “mem” changes to std::unique_ptr<int[]> type. And even then, you should probably seriously consider std::vector or std::array before trying a unique_ptr array.