sjcatoxliu.net·Jun 29, 2023Check your MSVC version if you having errors when using new feature in C++ 20Getting this error while compiling an open-source code. error C2039: 'format_string': is not a member of 'std' Google results will tell you to make sure you're using C++20 flag in the compiler since it's a new feature. I'm pretty sure it's not the is...1 like·79 readsC++