What is the "correct" way to write the Copy/Move/operator= trio in C++11?

Question

At this point, writing the copy constructor and assignment operator pair is well-defined; a quick search will lead you to plenty of hits on how to properly code these.

Now that the move constructor has entered the mix, is there a new "best" way?

Answer 1

Preferably, they'll just be = default;, since the member types should be of resource managing types that hide the move details from you, like std::unique_ptr. Only the implementors of those "low level" types should bother with dealing with that.

Remember that you only need to bother with move semantics if you're holding an external (to your object) resource. It's completely useless for "flat" types.