C++, move aside?

I recently read Nicolai Josuttis's book about C++ move semantics . It's an excellent book. Detailed, well organized, and full of good explanations and thoughfully arranged diagrams that present all the intricate details of C++ move semantics as clearly as possible. I didn't expect it, but I would even say that I enjoyed reading this book of about 250 pages about a single C++ feature. I will forever remember that moved-from objects are "in a valid but unspecified state". I also learned to appreciate the diff