I understand your point, but the language is evolving to be more powerful and expressive. There were certain rules in the past, and there are some new rules in

I understand your point, but the language is evolving to be more powerful and expressive. There were certain rules in the past, and there are some new rules in C++11 and beyond. With regard to your example, that's why you need to use universal references like "for (auto&& x : container)" [1]. It's just a new way of doing things, but it's hardly ambiguous. [1] https://isocpp.org/blog/2012/11/universal-references-in-c11-scott-meyers https://isocpp.org/blog/2012/11/universal-references-in-c11-...