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Message: [QUOTE="Victor Bazarov, post: 1547388"] To determine whether some decision (design decision included) is bad or good, one needs to know the motivation behind the decision. Why do you think you need them to behave differently? The copy-construction or copy-assignment have the "copy" as their key word. You implement them both. So, you must have a compelling reason to make them different, otherwise, if you asked a lay person, they'd just say, "Hey, you're making a copy either way, right? So, it should be the same thing." If your goal is to implement "lazy copying" or "copy-on-write" sort of thing, then both should essentially do it, and you need to employ some variation of reference counting. If that's not your goal, then what? V [/QUOTE]