I know NSDictionaries as something where you need a key in order to get a value. But how can I iterate over all keys and values in a NSDictionary, so that I know what keys there are, and what values there are? I know there is something called a for-in-loop in JavaScript. Is there something … Read more
I have a simple Dictionary which is defined like: var dict : NSDictionary = [ 1 : “abc”, 2 : “cde”] Now I want to add an element into this dictionary: 3 : “efg” How can I append 3 : “efg” into this existing dictionary? 20 Answers 20
I am finding some difficulty in accessing mutable dictionary keys and values in Objective-C. Suppose I have this: NSMutableDictionary *xyz=[[NSMutableDictionary alloc] init]; I can set keys and values. Now, I just want to access each key and value, but I don’t know the number of keys set. In PHP it is very easy, something as … Read more
