modify something

include/featherlog/log_message_flag.hpp

@@ -1,7 +1,7 @@
-#ifndef FEATHERLOG_LOG_MESSAGE_FLAG_HPP
-#define FEATHERLOG_LOG_MESSAGE_FLAG_HPP
+#pragma once
 
 #include <array>
+#include <limits>
 
 namespace flog
 {
@@ -21,12 +21,11 @@ namespace flog
         _NODISCARD bool isFull() const noexcept { return flagCount >= std::numeric_limits<MessageFlag>::digits; }
         _NODISCARD bool pushable() const noexcept { return !isFull(); }
         _NODISCARD bool isEmpty() const noexcept { return flagCount == 0; }
-        // _NODISCARD
+
+        _NODISCARD bool contains(std::string_view name) const noexcept;
 
     private:
         std::array<std::string, std::numeric_limits<MessageFlag>::digits> m_flagMap{};
         size_t flagCount { 0 };
     };
 }
-
-#endif