Replacing key/value in NSDictionary

objective-c nsdictionary key-value
locoboy picture locoboy · Apr 20, 2011 · Viewed 9.6k times · Source

If I have a dictionary with the following key/value "foo"/"bar" and declared [dictionary setObject:@"baz" forKey:@"foo"]; would this replace the current key value pair with "foo"/"baz" and delete "foo"/"bar"?

Answer

jsmp picture jsmp · Apr 20, 2011

The behave of an NSMutableDictionary (as any common hash table) is that if it does not exists it creates a new key/value pair, if it already exits it will replace the existing value with the new one.

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