“SwiftData inheritance relationship”

for years, I have avoided CD for this particular project.but I need spotlight support, and There seems to be only 1 way to get it these days: use core data. It wasn't always this way, and in my first release, I was able to find multiple 3rd party walkthroughs for getting spotlight support up and running. Those tutorials no longer work, and some of them no longer have any context. so my application is NOT a good fit for CD, but I am trying to determine if I can make it work, because spotlight is a requirement, and there seems to be no other path to spotlight.My first hurdle is persistent stores, can I have 1 persistent store Per entity?I know that this is a strange question. I don't want to ask it, I would rather just build the spotlight plugin myself. This however, is not an option. Apparently guessing how to do something, doesn't just make it work.I need to save files, and those individual files need to have spotlight metadata in them, such that when the user does a spotlight search, he finds the individual

Several days earlier I worte the code,I imported the library of Alamofire.I defined one enum,let it confirm to StringConvertible protocol.But the error told me enum cannot StringConvertible protocol.Actually Struct,enum and class both can conform to protocols.I confirmed the issue,possibly it has relationship with Xcode.My version of Xcode is 7.2...Hope later modify the bug of Xcode.

Hello,I've been working on this error for a couple of days now and I havn't been able to figure it out. I have a one to many relationship (days have many events) and they're both displayed using two NSFetchedResultsControllers in subsequent tableViewControllers (firstTVC and secondTVC). There is a third view controller that I use to add the events to the days. When I add only the first event on a day (in the thirdVC) the console reads:*** Assertion failure in -[UITableView _endCellAnimationsWithContext:]CoreData: error: Serious application error. An exception was caught from the delegate of NSFetchedResultsController during a call to -controllerDidChangeContent:. attempt to delete row 0 from section 0 which only contains 0 rows before the update with userInfoAfter logging a bunch I found that the controllerDidChangeContent was called in both the FirstTVC and the SecondTVC and the error logs right after this method is called in the SecondTVC.Then I go back to the secondTVC from the thirdVC and the tab

I would like a 'child' protocol to override the types of one of the 'parent' functions. Like this:protocol Delegate {} protocol Thing { func handle (delegate: Delegate) } protocol OtherDelegate : Delegate {} protocol OtherThing : Thing { func handle (delegate: OtherDelegate) // requires OtherDelegate, not Delegate }If I then implement `OtherThing` with:class StandardOtherThing : OtherThing { // ... }It requires implementations of two `handle` functions - one for `Delegate` and one for `OtherDelegate`. It should be an error to pass `OtherThing` just a plain old `Delegate`; `OtherDelegate` is required. Can't I catch this before runtime?If instead I try parameterizing `handle` asprotocol Thing { func handle<D: Delegate> (delegate: D) } protocol OtherThing : Thing { func handle<D: OtherDelegate> (delegate: D) }still no dice, the `OtherThing` requires two methods.I know that I can use:protocol Entity { typealias D : Delegate func handle (delegate: D) } protocol OtherEntity : Entity { typealias D : Othe

We are trying to integrate an SDK developed in Objective C to iOS app developed in Swift. The SDK’s static library is inherited into App delegate class. Is this an accepted standard per Apple guidelines ? I wanted o check the same to avoid app rejection on submission to store.Eg : AppDelgate.swiftclass AppDelegate : MystaticLibrary,UIApplicationDelegate { //My code }MystaticLibrary-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo { //My Code }Thanks in advance!RegardsVignesh B RiOS Developer

I have a problem deleting objects that have ordered, many-to-many relationships.Simplified model:Container.items (ordered, Nullify) <<-->> Item.containers (Nullify)Container.image (Cascade) <-> Image.containerConsider a single container with two items, already saved. Delete the container. Search for all items that have no container, i.e.: containers.@count == 0. Performing a fetch returns no objects.In contrast, search for containers.@count == 1. Returns both items. Then inspect those items, and they have no containers. Inspect the database, and the join table still has entries which refer to containers that do not exist.When I change the relationship to make it unordered, the problem goes away.I have seen various problems reported with ordered relationships on Stack Overflow. So this may be related. However, in a sample project, I am unable to reproduce the issue.Is there some way I can (indirectly) force those join entries to go away? What could I be doing wrong that woul

XCode Version 7.2.1 (7C1002)1. use storyboard2. create Tab Bar Controller3. create View Controller4. Presenting Segues (relationship +) .......Xcode exit.......

weird problem.wrote a core data app, worked great, until last week. Now it doesn't load any data.the save files, (binary) seem to be intact (based on file sizes)but when the file is loaded, there's nothing in the document window. I know. it sounds stupid. It sounds stupid to say it.I can add objects, work with them, and save files. the files get saved with the data intact. Opening those files produces an empty document. I have not overridden ANY app level methods. I literally do not have any of the loading or saving code IN my app at all... it's all inherited. the data model consists Of a single entity, which has 0 relationships, and 4 String properties.bindings all work flawlessly...and the kicker:the app worked just fine until a few days ago (OS update, is what i'm thinking controlled the timing) saving, opening, everything worked. No changes, no Compiles. It just stopped working. but other Core data apps work just fine. I tried looking at my code.... but there's little or no Code, and not