For example: SELECT * FROM accounts WHERE (platform, innerID) NOT IN ( ('platform_value1', 'innerID_value1'), ('platform_value2', 'innerID_value2'), ... ); this is hard to use Swift Predicate: func _fetchAccountNotIn(_ scope: [Account]) throws -> [Account] { let scope = scope.map{ ($0.platform, $0.innerID) } return try fetch(.init(predicate: #Predicate<Account> { !scope.contains(($0.platform, $0.innerID)) })) } shows compiler error: Cannot convert value of type '(String, String)' to expected argument type '((String, String)) throws -> Bool' Account definition: @Model public final class Account { #Unique<Account>([\.platform, \.innerID]) #Index<Account>([\.platform, \.innerID]) @Attribute(.preserveValueOnDeletion) public private(set) var platform : String @Attribute(.preserveValueOnDeletion) public private(set) var innerID : String }

Is it possible to deploy SwiftData to server? Or is it a good direction to consider improve SwiftData?

Where to download the sample code for WWDC2023 Session 111215 Meet UIKit for spatial computing "Spatial UIKit"?

// continuous version let continuousClock = ContinuousClock() let continuousElapsed = try await continuousClock.measure { try await Task.sleep(until: .now + .seconds(5), clock: .continuous) } print(continuousElapsed) // suspending version let suspendingClock = SuspendingClock() let suspendingElapsed = try await suspendingClock.measure { try await Task.sleep(until: .now + .seconds(5), clock: .suspending) } print(suspendingElapsed) result: 0.000126 seconds 5.324980708 seconds Swift version: Apple Swift version 5.7 (swiftlang-5.7.0.113.202 clang-1400.0.16.2)

.safeArea does not work with List [Important] test with iOS 15 beta 4 struct ListTest : View {     var body: some View {         List {             ForEach((0..<50).reversed(), id: \.self) { index in                 Text("\(index)")                     .listRowBackground(Color.red)             }         }         .listStyle(.plain)         .safeAreaInset(edge: .bottom, alignment: .center) {             Bar()         }         .navigationBarTitleDisplayMode(.inline)     } } struct Bar : View {     var body: some View {         HStack {             Spacer()             VStack {                 Text("Bar")                 Text("Bar")                 Text("Bar")                 Text("Bar")             }             Spacer()         }         .background(.bar)     } }

It is ridiculous to use two different versions of Concurrency API for different platforms. Xcode 13 beta 2 (13A5155e) uses two different versions of Concurrency for iOS and other platforms (e.g. macOS, watchOS, tvOS)!  // //  TestAsyncApp.swift //  Shared // // import SwiftUI @main struct TestAsyncApp: App {     var body: some Scene {         WindowGroup {             ContentView()         }     }          @available(iOS 15.0, macOS 12.0, watchOS 8.0, tvOS 15.0, *)     func testAsync() {         #if os(macOS) ||  os(watchOS) || os(tvOS) // will trigger error for iOS         Task {         } Task.detach { }         #elseif os(iOS) // will trigger deprecated warning for macOS, watchOS and tvOS         async {         } asyncDetached { }         #endif     } }

What does it mean by "Automatic Inflection" and "Detail Scenes" in SwiftUI part of Platform state of the Union?

Using Button in ToolbarItem is buggy. I use buttons in bottom toolbar. It cannot show Text and Icon at the same time. Developers cannot change the tintColor of these buttons separately. struct ContentView: View {     var body: some View {         NavigationView {             Text("Hello, world!")                 .toolbar {                     ToolbarItemGroup(placement: .bottomBar) {                         Button(action: {}) {                             Label("Bookmark", systemImage: "bookmark")                         }.accentColor(.green)                         Spacer()                         Button(action: {}) {                             Label("Delete", systemImage: "trash")                         }.accentColor(.red)                     }                 }         }     } } struct ContentView_Previews: PreviewProvider {     static var previews: some View {         ContentView()     } } ToolbarItem in the bottomBar cannot show Text and Icon at the same time, and change the tintColor separately. If I tried it to put a Text and Image into ZStack or HStack, and it will lose the default pointer hover effect in iPad, which is hard to adjust to emulate the default pointer hover effect.