Oh, that's very kind of you, but there's no magic bullet there, and to be honest, I don't really write C++ anymore, I use Python.
I still manage to get some very decent performance out of it. My current research project is something I've wanted to do for decades, a universal recorder, and it records and organizes a large number of high-quality audio streams while carefully skipping silence, and barely registers on my CPU. This is because I'm carefully handing off all the numerical processing to C/C++ libraries like soundfile, sounddevice and of course numpy.
The C++ optimizer is magical. I was once going through code in the debugger and I realized that it wasn't even creating the object that I was doing all the calculations on!, because it kept all the parts in registers and never returned that object! But I had to recompile the code with optimization off and cudgel my brain a bit before I figured it out.
