如何将NSDictionary转换为NSMutableDictionary？

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问题描述

我有一个现有的NSDictionary具有：

I have an existing NSDictionary that has:

{
    "charts_count" = 2;
    "created_at" = "2010-04-12T16:37:32Z";
    exchange = NASDAQ;
    "followers_count" = 259;
    id = 8404;
    industry = "<null>";
    "messages_count" = 1436;
    ric = "GRPN.O";
    sector = "<null>";
    symbol = GRPN;
    title = Groupon;
    "updated_at" = "2011-09-05T04:17:56Z";
}

如何获取这些内容并将其放入新的NSMutableDictionary？

How can I take these contents and put it into a new NSMutableDictionary?

推荐答案

使用 -mutableCopy 。

NSDictionary *d;
NSMutableDictionary *m = [d mutableCopy];

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