On Jul 15, 2013, at 2:38 PM, Uli Kusterer wrote: > On Jul 15, 2013, at 8:31 PM, Alex Zavatone <z...@mac.com> wrote: >> DownloadOperation.h >> @interface DownloadOperation : NSOperation >> - (id)initWithURL:(NSURL*)url; >> @property (nonatomic, readonly) NSError *error; >> >> DownloadOperation.m >> #import "DownloadOperation.h" >> >> @interface DownloadOperation () <NSURLConnectionDelegate> >> @property (nonatomic, strong) NSURL* url; >> @property (nonatomic, strong) NSURLConnection* connection; >> @property (nonatomic, strong) NSMutableData *buffer; >> @property (nonatomic) long long int expectedContentLength; >> @property (nonatomic, readwrite) NSError *error; > > > That's not 2 properties, that is one being declared twice, once for external > users (in the header) and once for internal use by the class. External users > are only supposed to read the property, while the class itself of course has > to be able to actually store a value in it, so it redeclares it from readonly > to readwrite in a class continuation. This is pretty much the only valid way > to declare the same property twice, changing anything else on the property > will give an error message, but readonly -> readwrite is OK. > > Cheers, > -- Uli Kusterer > "The Witnesses of TeachText are everywhere..." > http://www.zathras.de
Hmm, so if this is the legit form, when I do an @synthesize on error in the .m file, this error appears: Automatic Reference Counting Issue: ARC forbids synthesizing a property of an Objective-C object with unspecified ownership or storage attribute _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
