Great stuff. I would add ‘C++’ to the HN title.
I don’t use C++ anymore, and my years with the language were before stdlib. The C++ ecosystem is looking very good, but I am glad to have moved on. I even worked as a C++ mentor and wrote C++ books for McGraw-Hill, but the language was not a good fit for me; I always preferred C for low level stuff and Common Lisp to get work done quickly.