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I'm currently enumerating through NSMutableArray (or NSMutableSet) elements to find duplicates and remove them.
For example, if array/set has values [@"a", @"b", @"b", @"c"], the end result should be [@"a", @"b", @"c"].
Since I'm comparing NSStrings, I'm using isEqualTo: method to check if strings are equal.
Is there a more efficient way to do remove duplicate entries than to loop through all of them and check if duplicate exists?