Copying the contents of an NSMutableDictionary into another NSMutableDictionary?
18,435
Solution 1
Check the NSDictionary initWithDictionary:copyItems: method.
It it enables deep copying of elements thru calling copyWithZone: method of item's class. You will have to take care of copying the fields yourself within the method.
Solution 2
You can also jump between mutable and non-mutable dictionaries using copy and mutableCopy.
- (void) someFunc:(NSMutableDictionary *)myDict {
NSDictionary *anotherDict = [myDict copy];
NSMutableDictionary *yetAnotherDict = [anotherDict mutableCopy];
}
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Author by
NSExplorer
Updated on June 04, 2022Comments
-
NSExplorer over 1 year
I have an
NSMutableDictionary
each element of which is another dictionary. What is the best way I can copy its contents into anotherNSMutableDictionary
? I've tried using:firstDictionary = [NSMutableDictionary dictionaryWithDictionary:secondDictionary];
However not sure if this is the best way to do it.