how to do true deep copy for NSArray and NSDictionary with have nested arrays/dictionary?

Question

Question: Is there a way to use existing objective-c methods to do a full deep copy of a NSDictionary or NSArray, that themselves have nested dictionaries or arrays within t

Answer 1

The easy way for a DEEP copy is to simply use CFPropertyListCreateDeepCopy. Here is example (with ARC):

    NSDictionary *newDictionary =
 (__bridge NSDictionary *)(CFPropertyListCreateDeepCopy(kCFAllocatorDefault,
         (__bridge CFPropertyListRef)(originalDictionary),
          kCFPropertyListImmutable));

my originalDictionary in this example is an NSDictionary

CFPropertyListRef can simply be cast to NSDictionary as long as the top level entity of the CFPropertyListRef is a CFDictionary.