I have done C++ for 15 years, its the only choice in the HFT domain I used to work in. There is nothing that can replace it right now because of its performance

I have done C++ for 15 years, its the only choice in the HFT domain I used to work in. There is nothing that can replace it right now because of its performance, the quality of the compilers and the available library eco-system. But that does not mean that some of C++ corners are not inexcusably obtuse. Co-routines is a new one.