On Jul 15, 2013, at 1:31 PM, Alex Zavatone wrote: > I'm looking at the wonderful examples here: > > http://www.objc.io/issue-2/common-background-practices.html > > And the particular file from the Asynchronous Networking section here: > > https://github.com/objcio/issue-2-background-networking > > Since I work in Xcode 4.2 often due to Snow Leopard, I wanted to make sure > that everything was properly @synthesized and am confused about how to > properly @synthesize the two NSError properties. One is in the > DownloadOperation.h file and the other in the DownloadOperation.m file. > > 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; > > > Later on down in the .m file is the only place where error is used: > > - (void)connection:(NSURLConnection*)connection > didFailWithError:(NSError*)error > { > self.error = error; > self.isExecuting = NO; > self.isFinished = YES; > } > > > This appears not to be the cleanest way of doing this, but the compiler is > obviously able to create the accessors. The easy approach is to rename one > of the properties given that both are the same name, but what would be the > proper way to @synthesize both - if there is one?
That's not two properties, that's one property. It's declared publicly read-only and redeclared privately read-write (in a class extension). Regards, Ken _______________________________________________ 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
