Item 13: Use Objects to Manage Resources

Just use RAII - and don’t let exception leave destructor.

• The newly acquired resource should be immediately turned over to a resource-management object - so that it won’t leak.

• auto_ptr and shared_ptr doesn’t call delete[], meaning, that they cannot manage array objects. (But the code will compile. So if you are not careful and turns an array over to a smarter pointer, your program will have undefined behavior.)

• Like Java, modern C++ should generally avoid using array because array doesn’t mix well with the modern C++ features.

Note: Effective C++ 3rd ed is not up-to-date to C++11 std::unique_ptr that supersedes auto_ptr.