Re: Unknown name type for an imported class in Xcode 6.x iOS 8 project
Re: Unknown name type for an imported class in Xcode 6.x iOS 8 project
- Subject: Re: Unknown name type for an imported class in Xcode 6.x iOS 8 project
- From: Alex Zavatone <email@hidden>
- Date: Thu, 30 Apr 2015 20:14:35 -0400
On Apr 30, 2015, at 4:29 PM, William Squires wrote:
> If I understand properly, you can't have a circular #import - you could have a circular #include (in older C code), but from what I recall, #import is supposed to prevent that sort of problem; each symbol only gets imported once, regardless of the number of times the header is encountered by the compiler/pre-processor... That's not to say there's not a bug in the works, mind you. :)
>
That's what I thought too, but I guess that's not the case.
I thought that using #import uses an approach like an NSSet that prevents more than one occurrence of the item in the include tree.
Doesn't Apple's docs say that #import prevents that?
Anyway, searching Stackoverflow for "Unknown type name" shows several cases of this and when I removed my AppDelegate code from my one of my classes and commented out the #import of the AppDelegate, the error went away and I was able to build to the iPhone.
I wonder if this is a bug in #import?
> On Apr 30, 2015, at 3:20 PM, Alex Zavatone <email@hidden> wrote:
>
>>
>> On Apr 30, 2015, at 4:07 PM, Alex Zavatone wrote:
>>
>>> Just had this lovely build error crop up.
>>>
>>> I'm including a .h file in my iOS app's AppDelegate.h. Say it's XXXX.h
>>>
>>> Right below the #import in the @interface, I've got an iVar of that class.
>>>
>>> And below the @interface, a property that's nonatomic and strong for an instance of that class.
>>>
>>> Xcode just started telling me that this class that I'm including is of "Unknown type name" on the lines where the iVar and the property are defined.
>>>
>>> The class itself compiles, is spelled properly, is in the project and in the Compile Sources section of the build.
>>>
>>> I'm having trouble understanding where to look here for what's broken.
>>>
>>> Any ideas?
>>>
>>> Thanks in advance,
>>> Alex Zavatone
>>
>> OK. Looks like i have a circular #import going on. Fun times.
>>
>>
>>
>>
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