I've been writing in a certain C++17-like subset of C++20. I like designated initializers, and there are probably some other syntax and library conveniences fro

I've been writing in a certain C++17-like subset of C++20. I like designated initializers, and there are probably some other syntax and library conveniences from C++20 that I'm taking advantage of without knowing (std::string_view::starts_with?), but the rest is just C++17. One notable exception is that I did a project with C++20's coroutines recently.