As has been true throughout the history of C++, nobody uses every single feature. You just pick what you want (foreach loops, yay!) and write code. All your old

As has been true throughout the history of C++, nobody uses every single feature. You just pick what you want (foreach loops, yay!) and write code. All your old code still works. It's the best time to be a C++ programmer, because if there's something that annoyed you about C++03, there's probably a better way to do it in C++11/14/17.