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Re: confused by what seems to be a recursive declaration/definition
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Re: confused by what seems to be a recursive declaration/definition


  • Subject: Re: confused by what seems to be a recursive declaration/definition
  • From: Jim Correia <email@hidden>
  • Date: Thu, 11 Aug 2011 20:59:28 -0700

On Aug 11, 2011, at 7:27 PM, William Squires wrote:

> On Aug 11, 2011, at 6:51 PM, Kyle Sluder wrote:
>
>> On Thu, Aug 11, 2011 at 4:26 PM, Jens Alfke <email@hidden> wrote:
>>>
>>> On Aug 11, 2011, at 4:10 PM, Luther Baker wrote:
>>>
>>>> static void *AVPlayerDemoPlaybackViewControllerRateObservationContext = &
>>>> AVPlayerDemoPlaybackViewControllerRateObservationContext;
>>>
>>> It’s initializing the variable to point to itself. Which seems sort of pointless, but I don’t know the context.
>>
>> It's a quick way to initialize a unique pointer when you don't care
>> about the value.
>
> Of course, if you don't care about the value, why would you need a unique one? :)

For KVO contexts, you don't care about the value, but you do care that it is unique.

—Jim

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  • Follow-Ups:
    • Re: confused by what seems to be a recursive declaration/definition
      • From: Jens Alfke <email@hidden>
References: 
 >confused by what seems to be a recursive declaration/definition (From: Luther Baker <email@hidden>)
 >Re: confused by what seems to be a recursive declaration/definition (From: Jens Alfke <email@hidden>)
 >Re: confused by what seems to be a recursive declaration/definition (From: Kyle Sluder <email@hidden>)
 >Re: confused by what seems to be a recursive declaration/definition (From: William Squires <email@hidden>)

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