On 23 Jul 2012, at 12:57, Andreas Grosam <agro...@onlinehome.de> wrote:

> 
> On 23.07.2012, at 13:09, Mike Abdullah wrote:
> 
>> Aha, now we're talking. You want -initWithDictionary:copyItems:
> 
> No, this is not a deep copy. 
> 
> Suppose, there is an element within the array, whose value is a mutable 
> dictionary. If I change the that mutable dictionary (or its values), the copy 
> and the dictionary would still compare equal to the copy (since children 
> haven't been copied).
> 
> 
> Thus, I need to define a deepCopy method for NSDictionary (and NSArray, too).

You should seriously consider whether your design is a good idea then. Copying 
the objects in an array is rare, but justifiable. Having multiple levels of 
nested dictionaries is rarely so. Sure you're not (ab)using dictionaries to 
avoid defining a new class?


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