[lsh123]

Very good summary. I understand the reason why Google has these restrictions: they have a lot of old C++ code and they try to play it safe, maintain the same code style, etc. However, the modern C++ is a much nicer language than it was 15 years ago. By imposing these restrictions, Google limits the developers productivity and quality of the code. I've had experience integrating large old C/C++ project into the modern C++ world and while it is not a simple task, it can be done with relatively low pain (the biggest challenge was related to making the code exception safe).