将枚举类型和其文字含义对应的方法

/** Gets a string describing the read result */
        static std::string getResultCodeString( unsigned code )
        {
            return
                code == RESULT_OK              ? "OK" :
                code == RESULT_CANCELED        ? "Read canceled" :
                code == RESULT_NOT_FOUND       ? "Target not found" :
                code == RESULT_SERVER_ERROR    ? "Server reported error" :
                code == RESULT_TIMEOUT         ? "Read timed out" :
                code == RESULT_NO_READER       ? "No suitable ReaderWriter found" :
                code == RESULT_READER_ERROR    ? "ReaderWriter error" :
                code == RESULT_NOT_IMPLEMENTED ? "Not implemented" :
                                                 "Unknown error";
        }