“SwiftData inheritance relationship”

I have a main app with the entitlements: com.apple.security.app-sandbox com.apple.security.hypervisor and a helper app with the entitlements com.apple.security.app-sandbox com.apple.security.inherit According to the documentations, if I start the helper app with NSTask, it should inherit the sandbox and I do see that for file accesses. However, when I try to use Hypervisor.framework, I get HV_DENIED. If I try to add com.apple.security.hypervisor to the helper app, then the NSTask spawned process crashes with Could not set sandbox profile data: Operation not permitted (1). I believe this is a bug and have submitted FB8921623 In the meantime, is there a workaround other than disabling App Sandbox or sticking to a single app (not possible for our application)?

I have a werid case that shouldn't happen according to https://forums.developer.apple.com/forums/thread/706390 I have an audio unit which runs in FCP and I want it to launch a sandboxed app as a child process. If I sign the child app with just com.apple.security.app-sandbox entitlement it crashes with SYSCALL_SET_PROFILE error. According to the article referenced above: This indicates that the process tried to setup its sandbox profile but that failed, in this case because it already has a sandbox profile. This makes sense because audio units run in a sandboxed environment (in AUHostingService process). So I added com.apple.security.inherit to the entitlements plist and now I get Process is not in an inherited sandbox. error. According to the article referenced above: Another cause of a trap within _libsecinit_appsandbox is when a nonsandboxed process runs another program as a child process and that other program’s executable has the com.apple.security.app-sandbox and com.apple.security.inherit entit

ViewA has ModelA ViewA loads into the memory. ModelA is queried and shown in the list. ModelA has an array of ModelB which is faulted for the memory. When you select an item in the list in ViewA ViewB is loaded and ModelB information is displayed. When you pop back to ViewA, ModelB is still in the memory since it is contained within the array of ModelA. how could i make this memory efficient by releasing ModelB from the memory. should I refetch everything? or is there another method?

I am confused about the inheritance behavior of modifiers in SwiftUI. Some modifiers (such as .background, .clipShape, etc.) seem to affect both parent and child views inconsistently. Here are some specific examples I encountered in Xcode 16.4 with the iOS 18.5 iPhone 16 Pro simulator: struct ContentView: View { var body: some View { VStack { // RedVStack Text(Hello world!) VStack { // OrangeVStack Text(Hello) Text(Hello) } .background(.orange) } .background(.red, in: RoundedRectangle(cornerRadius: 5)) // RedVStack has rounded corners, OrangeVStack also has rounded corners } } struct ContentView: View { var body: some View { VStack { // RedVStack Text(Hello world!) VStack { // OrangeVStack Text(Hello) Text(Hello) } .background(.orange) Text(Hello world!) } .background(.red, in: RoundedRectangle(cornerRadius: 5)) // RedVStack has rounded corners, OrangeVStack does not have rounded corners } } struct ContentView: View { var body: some View { VStack { // RedVStack Text(Hello world!) VStack { // OrangeVS

Hello, In our app, we’ve modeled our schema using inheritance introduced in iOS 26.0, and we’re implementing SwiftData History to re-fetch models only when necessary. @Model public class Transaction { @Attribute(.preserveValueOnDeletion) public var date: Date = Date() public var amount: Double = 0 public var memo: String? } @Model public final class Spending: Transaction { public var installmentIndex: Int = 1 public var installment: Int = 1 public var installmentID: UUID? } If data has been deleted from database, we need to check a date property to determine whether to re-fetch datas. To do this, we added the preserveValueOnDeletion attribute to date property so we could retrieve it from the History tombstone value. However, after adding this attribute, a crash occurs. There is a console log Could not cast value of type 'Swift.ReferenceWritableKeyPath' (0x106bf8328) to 'Swift.PartialKeyPath' (0x1094f21d8). and error log attached StrictMoneyChecking-2025-11-07-105108.txt I also tried this in

I’m having an issue when two of my SwiftData models have a one-to-many relationship and I have them synced via CloudKit. To be clear, I’ve met all of the requirements to make it iCloud friendly and sync to work. I followed this https://www.hackingwithswift.com/quick-start/swiftdata/how-to-sync-swiftdata-with-icloud, and can confirm I’ve done it correctly because initially I was seeing this crash on startup when I had not: Thread 1: Fatal error: Could not create ModelContainer: SwiftDataError(_error: SwiftData.SwiftDataError._Error.loadIssueModelContainer) This is to say, the problem may be iCloud related but it’s not due to a wrong model setup. Speaking of which, these are models: @Model class Film { var name: String = var releaseYear: Int = 0 var director: Director? = nil init(name: String, releaseYear: Int, director: Director) { self.name = name self.releaseYear = releaseYear self.director = director } } @Model class Director { var name: String = @Relationship(

I've noticed that a seemingly insignificant modification of the program below will make the compiler work for ever at 99% cpu.This is the program without the modification (so it will compile normally):protocol Nat { static var intValue: Int { get } } protocol NonZero : Nat { typealias Pred : Nat } struct Zero : Nat { static var intValue: Int { return 0 } } struct Succ<P: Nat> : NonZero { typealias Pred = P static var intValue: Int { return P.intValue + 1 } } protocol StaticArrayType { typealias Element typealias Arity : Nat var startIndex: Int { get } var endIndex: Int { get } subscript (position: Int) -> Element { get } } extension StaticArrayType { var startIndex: Int { return 0 } var endIndex: Int { return Arity.intValue } } struct EmptyStaticArray<Element> : StaticArrayType, CollectionType { typealias Arity = Zero subscript (position: Int) -> Element { fatalError(Index out of bounds!) } } struct StaticArray<Tail: StaticArrayType> : StaticArrayType, CollectionType { typealias Arity

I am new to xCode but learning.I am using this learning tool:https://codewithchris.com/iphone-app-connect-to-mysql-database/But it says to select folder and Add File, then it will inherest some properties in the code, but it inherits nothing.All I get is the UIKit code.Has there been a fundamental change in xcode, or have I not gone through the right options.When I did do Add File, there was an option of various Classes to choose from, not shown in their tutorial. I took the Cocoa one as it was default.Can someone please help?Simon