Function Log

10.15-logFunction1/main.cpp:12–23

#A Log function taking function, line, and variadic arguments

// #A Log function taking function, line, and variadic arguments
void Log(LogLevel             level,
         std::source_location location,
         std::string_view     fmt,
         const auto&... args)
{
  std::clog << std::format("{}:{}:{}: ",
                           static_cast<unsigned int>(level),
                           location.function_name(),
                           location.line())
            << std::vformat(fmt, std::make_format_args(args...))
            << '\n';
}

// #B Macro wrapper to call Log
#define LOG(level, fmt, ...)                                   \