如何在nsmutable字典中附加数据

Question

我想添加＆＃34; SAT＆＃34;，＆＃34; SUN＆＃34;在FRI与分隔符逗号之后，在＆＃34;选择_days＆＃34;我该怎么做。是否有可能在NSmutable dictonary

中追加这样的值

   {
        "seleted_days" =     (
            FRI
        );
        timings =     (
                    (
            ),
                    (
            ),
                    (
            ),
                    (
            ),
                    (
                            {
                    "close_time" = "02:00 AM";
                    "open_time" = "01:00 AM";
                    timelist = "01:00 AM , 02:00 AM";
                    timestat = "1,1";
                }
            ),
                    (
            ),
                    (
            )
        );
    }