Re: Swift -> Obj-C: return __kindof Something
Re: Swift -> Obj-C: return __kindof Something
- Subject: Re: Swift -> Obj-C: return __kindof Something
- From: Steve Christensen via Cocoa-dev <email@hidden>
- Date: Mon, 11 Nov 2019 18:06:46 -0800
Yep, I understand what it does. I’m trying to get the same class-or-subclass
behavior during compilation. I’d looked at the stack overflow article earlier,
so I’ll check out the Swift forum to see what’s there. Thanks.
> On Nov 11, 2019, at 4:43 PM, Quincey Morris
> <email@hidden> wrote:
>
>> On Nov 11, 2019, at 15:07 , Steve Christensen via Cocoa-dev
>> <email@hidden <mailto:email@hidden>> wrote:
>>
>> Some existing Obj-C methods are of the form:
>>
>> + (nullable __kindof NSManagedObject) someFooThing;
>>
>> Right now I have
>>
>> class var someFooThing: NSManagedObject?
>
> AFAIK, “__kindof” only affects the ability to assign one Obj-C class pointer
> to a variable of a different but compatible (kind of) type. It doesn’t change
> the actual type of the variable, nor does it (again AFAIK) change the ability
> to assign without errors in Swift. Also see here for some informative
> discussion:
>
> https://stackoverflow.com/questions/31399208/ios-kindof-nsarray
> <https://stackoverflow.com/questions/31399208/ios-kindof-nsarray>
>
> I suggest you ask about this on forums.swift.org <http://forums.swift.org/>.
> If there’s an alternative, someone there will know.
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