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 protected]> 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. >> >> >> >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Xcode-users mailing list ([email protected]) >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/xcode-users/wsquires%40satx.rr.com >> >> This email sent to [email protected] > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Xcode-users mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/xcode-users/zav%40mac.com > > This email sent to [email protected] _______________________________________________ Do not post admin requests to the list. They will be ignored. Xcode-users mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/xcode-users/archive%40mail-archive.com This email sent to [email protected]
