> I would expect that the project also uses const iterators (cbegin, cend, etc) which didn't make it into C++11, and probably make_unique<T>, which also never m

> I would expect that the project also uses const iterators (cbegin, cend, etc) which didn't make it into C++11, and probably make_unique<T>, which also never made it into C++11, even though it very well would have (if it had been implemented before the cutoff date). Const iterators in the form of cbegin() and cend() member functions on the standard containers were part of C++11, I'm pretty sure. It's either that or the C++ Primer 5e included some post-C++11 things in it. What was missing from C++11, and probably an oversight, was std::cbegin() and std::cend() free functions, a la std::begin() and std::end(), for overloading and C arrays and so forth.