“SwiftData inheritance relationship”

After much frustration, reading, and googling, I finally got the magic incantation to add a Swift class to my ObjC code. You have to create the Swift class and eliminate all errors, then delete it from your project (not to trash) and drag it back in. Then, finally, I got it to add the magic interface file so it could be accessed.Another point -- The docs lie. The Swift class absoultely has to inherit from NSObject, or it will not allow you to add @objc to the file.

I work on an app that heavily relies on table views with NSFetchedResultsController.I've found that on users' devices, the app lags. On the kind of large data set that some of our users have on their devices, Instruments showed that `tableView:heightForRowAtIndexPath:` was the biggest culprit (in it, we check the value of a property and return a different height based on that). According to Instruments, this process led to faults being fired constantly.I'm trying to avoid this, I tried to use `returnsObjectsAsFaults = NO`, but that did nothing. Objects are still returned as faults. I'm guessing this is a bug, and I found references to it from years ago on Stack Overflow.That was the first issue.The second issue is that if I Cmd-click into the documentation for `NSFetchedRequest`, the comments on the `propertiesToFetch` property state the following:Specifies a collection of either NSPropertyDescriptions or NSString property names that should be fetched. The collection may represent attributes, to-one relationships

My code for Portrait/UpsideDown orientation in Xcode 7.0.1 Obj-C is:- (UIInterfaceOrientationMask)supportedInterfaceOrientations { return (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown); }SLComposeViewController does not override supportedInterfaceOrientations and so it inherits the default implementation from UIViewController which returns UIInterfaceOrientationMaskAllButUpsideDown on iPhoneSo I created a subclass of SLComposeViewController, but now how do I override supportedInterfaceOrientations?

My code for Portrait/UpsideDown orientation in iPhone6.m for Xcode 7.0.1 in Obj-C is:- (UIInterfaceOrientationMask)supportedInterfaceOrientations { return (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown); }SLComposeViewController does not override supportedInterfaceOrientations and so it inherits the default implementation from UIViewController which returns UIInterfaceOrientationMaskAllButUpsideDown on iPhoneSo I created a subclass of SLComposeViewController, but now how do I override supportedInterfaceOrientations?

Sometimes I see that firing the launchctl load /Library/LaunchAgents/com.xyz.plist command doesn't load the app at all. This happens rarely but are there any known conditions or situations where this command would fail? This happened when I installed a system update. After reboot the app didnt start. Is there any way to debug launchctl?The contents of the plist are:<dict><key>Label</key><string>com.xyz</string><key>ProgramArguments</key><array><string>/Applications/xyz.app/Contents/MacOS/xyz</string></array><key>EnvironmentVariables</key><dict><key>OPT</key><string>xyz</string></dict><key>ExitTimeOut</key><integer>10</integer><key>KeepAlive</key><dict><key>SuccessfulExit</key><false/> </dict><key>RunAtLoad</key><true/><key>EnableTransactions</key><false/>launchctl dumpstate says the STATE=WAITING.

I have a patented method that takes two users and they manually enter both of their fingerprint data's into BOTH phones. I need it to validate sexually transmitted disease blood test data, so users can make educated decisions about *** or future relationship decisions. I am pursuing a National Institutes of Health grant with a UConn behavioral researcher. I NEED to remotely send fingerprint data off of the phone to validate data to operate. I can see that Apple hasn't seen a legitimate application as to why it would be necessary, but I hope this can sell that need. How do I get Apple to change their system to accommodate this. I have proactively contacted the Federal Trade Commission, because even with some willing participants, it may be difficult to justify building an SDK, possibly just for me.

Hi everyone,I am building a swift-based library, that can load configuration files.Of course, configuration files can contain errors, and I need to provide helpful feedback in such cases.I have declared error types, that inherits NSError, and I throw them with the required description when an error occures. It works great in swift.But when I use my library in Objective-C, the errors I receive does not contain any helpful information : userInfo is nil, the only thing I have is the domain and the code.What have I missed ? What should I do to have the userInfo transfered from the swift world to the objective-C ?Thanks for your help !Jerome