Re: iOS Category to match OS X category
Re: iOS Category to match OS X category
- Subject: Re: iOS Category to match OS X category
- From: Kevin Meaney <email@hidden>
- Date: Tue, 07 Oct 2014 16:30:41 +0100
Thanks Jens,
I've just implemented a different solution as I since found that CIFilter instance on iOS has a name read only property which I hadn't noticed.
So instead I've replaced the array of filters in my filter chain object with an array of dictionaries. Each dictionary has a name and a filter attribute. This way I get the behaviour I need and it works for both iOS and OS X. Nothing clever about it but it's nice having a common solution for both.
Kevin
On 7 Oct 2014, at 16:00, Jens Alfke <email@hidden> wrote:
>
>> On Oct 7, 2014, at 1:09 AM, Kevin Meaney <email@hidden> wrote:
>>
>> This category is not in any of the iOS frameworks as far as I can tell. So it looks like the only way I can get the same behaviour on iOS is using associated objects/references.
>
> That sounds reasonable.
>
>> I'm not comfortable with this solution, it feels too much like a hack so I'm asking a couple of questions before going ahead.
>
> I don't think so; if anything, associated objects are the solution for the real hacks people used to use to do this :)
>
>> Is there an alternative less hacky solution I've missed?
>
> You can create a global weak-key NSMapTable that maps CIFilter objects to NSStrings.
>
> —Jens
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