可以在没有宏的情况下在C++20中实现一次log吗？

#include <iostream>
#include <string_view>
#include <utility>

// 定义一个简单的日志级别枚举
enum class LogLevel {
    Info,
    Warning,
    Error
};

// 内联函数，用于输出日志
inline void log(LogLevel level, std::string_view message) {
    switch (level) {
        case LogLevel::Info:
            std::cout << "[INFO] ";
            break;
        case LogLevel::Warning:
            std::cout << "[WARNING] ";
            break;
        case LogLevel::Error:
            std::cout << "[ERROR] ";
            break;
    }
    std::cout << message << std::endl;
}

// 模板函数，用于简化日志记录
template<typename... Args>
inline void log_once(LogLevel level, const char* format, Args&&... args) {
    log(level, fmt::format(format, std::forward<Args>(args)...));
}

int main() {
    // 使用log_once函数记录日志
    log_once(LogLevel::Info, "This is an info message with number: {}", 42);
    log_once(LogLevel::Warning, "A warning occurred!");
    log_once(LogLevel::Error, "An error happened: {}", "File not found");

    return 0;
}