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Re: ARC and NSFastEnumeration
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Re: ARC and NSFastEnumeration


  • Subject: Re: ARC and NSFastEnumeration
  • From: Greg Parker <email@hidden>
  • Date: Mon, 19 Sep 2011 12:46:49 -0700

On Sep 19, 2011, at 3:33 AM, Devraj Mukherjee wrote:
> I am trying to implement fast enumeration for a wrapper object that
> has an NSArray, following this tutorial
> http://cocoawithlove.com/2008/05/implementing-countbyenumeratingwithstat.html
>
> Obviously ARC doesn't like the way
>
> - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState
> *)state objects:(id *)stackbuf count:(NSUInteger)len
>
> is implemented.
>
> Does anyone have any examples of ARC and NSFastEnumeration they can refer me to?

Try declaring it like this (as seen in protocol NSFastEnumeration from NSEnumerator.h)

    - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id __unsafe_unretained []) stackbuf count:(NSUInteger)len;

That should tell ARC what to do with the contents of stackbuf.


--
Greg Parker     email@hidden     Runtime Wrangler


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References: 
 >ARC and NSFastEnumeration (From: Devraj Mukherjee <email@hidden>)

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