True, for those who don't agree, read about rule-of-zero for some expansions on this. If you have to write the same type of clean up code in multiple destructor

True, for those who don't agree, read about rule-of-zero for some expansions on this. If you have to write the same type of clean up code in multiple destructors you are doing it wrong, wrap that resource in a class that has the responsibility of managing that type of resource and forget about the destructors elsewhere.