> For `constexpr` replace `std::string` with `const char *`. Or string_view [1], since it's a literal. [1] https://en.cppreference.com/w/cpp/string/basic_stri

> For `constexpr` replace `std::string` with `const char *`. Or string_view [1], since it's a literal. [1] https://en.cppreference.com/w/cpp/string/basic_string_view https://en.cppreference.com/w/cpp/string/basic_string_view