How can I convert an NSDictionary to an NSMutableDictionary?

Question

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"; } 

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

Answer 1

Use -mutableCopy.

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

Note that -mutableCopy returns id (Any in Swift) so you will want to assign / cast to the right type. It creates a shallow copy of the original dictionary.

Answer 2

In case of Swift

var tempDic: NSMutableDictionary = yourDictionary.mutableCopy() as NSMutableDictionary