Re: ARC Extending Lifetime of Objects
Re: ARC Extending Lifetime of Objects
- Subject: Re: ARC Extending Lifetime of Objects
- From: Mike Abdullah <email@hidden>
- Date: Mon, 23 Jul 2012 13:04:24 +0100
On 23 Jul 2012, at 12:57, Andreas Grosam <email@hidden> 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?
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden