I wrote a tool that tested a compiler for what it says it supports a while back. It's probably not full up to date with the C++20 ones but should be once we kn

I wrote a tool that tested a compiler for what it says it supports a while back. It's probably not full up to date with the C++20 ones but should be once we know the final set. I haven't found any false positives so far, but def some false negatives(Apple Clang) where they don't report what they support. This may also be due to not fully supporting them. https://github.com/beached/cpp_feature_flags https://github.com/beached/cpp_feature_flags