I want to use the Observations AsyncSequence on some SwiftData @Model instances to determine if internal calculations need to be done. When a simple property is linked to the Observations it fires CONTINUOUSLY even though no change is made to the model property. Also, when I try to observe a property which is a list of another @Model type the Observations sequence does not fire when I add or remove items. I am hoping to use the async-algorithm's merge function so all the associated sequences can be combined since if any of the associated events should fire the calculation event.

I think that it would be helpful to have better interoperability between Swift and JavaScript. There are a lot of useful packages on NPM that don't have equivalents for Swift. It would be helpful if Apple provided easier ways to use NPM packages in a Swift project. Currently, the JavaScriptCore framework is missing many standard things used in many packages, like the fetch API. It would be helpful to be able to run sandboxed JavaScript code inside of a Swift app but allow access to specific domains, folders, etc., using a permissions system similar to Deno.

I'm trying to learn and focus on the task and your examples keep having hidden conundrums in them. Here is an example that got me snagged for hours last night going, Well what the F do they want me to name it? What is it you want me to learn here? Because you pose a giant riddle of name something that you should be given a name for... My friend said to me that this is a common thing you will have to do and they were right however... What are you asking me to do? Get stuck on the variable naming problem where I'm going... Yeah those are math terms from 20+ years ago and I have no idea how to classify those terms... Are you asking me that? No. So why is that in the problem. These conundrums mixed in with legitimate problems honestly make me not want to learn Swift at all.

Experiment Create a constant with an explicit type of Float and a value of 4. https://docs.swift.org/swift-book/documentation/the-swift-programming-language/guidedtour

Is anyone have this problem on xcode 26 ? Undefined symbol: _swift_FORCE_LOAD$_swiftCompatibility50 Undefined symbol: _swift_FORCE_LOAD$_swiftCompatibility51 Undefined symbol: _swift_FORCE_LOAD$_swiftCompatibility56 Undefined symbol: _swift_FORCE_LOAD$_swiftCompatibilityConcurrency Undefined symbol: _swift_FORCE_LOAD$_swiftCompatibilityDynamicReplacements

Hello, I've already reported this issue via Feedback Assistant a month ago (FB22340897) but it's still open and I'd like to know whether I can expect something to be changed regarding it. Here are the details: It seems that Xcode 26.4 started specifying nonisolated for the resourceBundleDescription in the generated stringSymbols files for Swift packages: from: private let resourceBundleDescription = LocalizedStringResource.BundleDescription.atURL(resourceBundle.bundleURL) to: private nonisolated let resourceBundleDescription = LocalizedStringResource.BundleDescription.atURL(resourceBundle.bundleURL) This causes a compilation error: Main actor-isolated default value in a nonisolated context when the Package.swift for the Swift Package in which the string catalog is located specifies: swiftSettings: [.defaultIsolation(MainActor.self)] Since all tools (String Catalogs, Swift Packages and default actor isolation to be Main Actor) are recommended by Apple, I believe it should be possible to use all these together like before Xcode 26.4.

I'm keeping most information in an actor and I would like to save also a closure in it that I get from func application( _ application: UIApplication, handleEventsForBackgroundURLSession identifier: String, completionHandler: @escaping () -> Void) Task.init{ await GeoreferenceQueue.shared.setBackgroundCompletionHandler(completionHandler) } } where GeoreferenceQueue is and actor, while the caller is a class. yet I receive error: Passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure and Sending task-isolated 'completionHandler' to actor-isolated instance method 'setBackgroundCompletionHandler' risks causing data races between actor-isolated and task-isolated uses

I’m aware that Xcode version 26 beta 3 provides an option to enable Swift’s Approachable Concurrency feature at the project level. However, I’d like to achieve the same for a Swift Package. Could you please advise on how to enable Approachable Concurrency support specifically for a Swift Package?

Is there any way to retrieve the memory pressure percentage using native libraries? When I run the memory-pressure command, I can see the percentage of free memory, but I’d like to retrieve the same information using a native library.

After switching our iOS app project from Swift 5 to Swift 6 and publishing an update, we started seeing a large number of crashes in Firebase Crashlytics. The crashes are triggered by NotificationCenter methods (post, addObserver, removeObserver) and show the following error: BUG IN CLIENT OF LIBDISPATCH: Assertion failed: Block was expected to execute on queue [com.apple.main-thread (0x1f9dc1580)] All scopes to related calls are already explicitly marked with @MainActor. This issue never occurred with Swift 5, but appeared immediately after moving to Swift 6. Has anyone else encountered this problem? Is there a known solution or workaround? Thanks in advance!

I currently have a iOS app live on the App Store but I also want to release it on Android, the whole code is in Swift so would that be possible or would I have to rewrite my whole apps code in a different coding language.

Hi, writing a database app for storing equipment details. Spent the day doing minor changes and tidying with many backups made, and always re-building to check its all working. Everything ok but then next build looses all data, what's the best thing to check to see if the data is still there, any help would be fantastic.

Note On a Mac with Xcode installed, or on an iPad with Swift Playgrounds, you can open this chapter as a playground. Playgrounds allow you to edit the code listings and see the results immediately. (Note in page 3) (I would like to open the chapter or book: Swift Programming Language in Swift Playground on iPad) https://books.apple.com/ve/book/the-swift-programming-language-swift-5-7-beta/id1002622538?l=en-GB Best regards

Does anyone know if there will be a Swift 6 version of "The Swift Programming Language" book and if so, when it will be released for Apple Books?

Hey all! in my personal quest to make future proof apps moving to Swift 6, one of my app has a problem when setting an artwork image in MPNowPlayingInfoCenter Here's what I'm using to set the metadata func setMetadata(title: String? = nil, artist: String? = nil, artwork: String? = nil) async throws { let defaultArtwork = UIImage(named: "logo")! var nowPlayingInfo = [ MPMediaItemPropertyTitle: title ?? "***", MPMediaItemPropertyArtist: artist ?? "***", MPMediaItemPropertyArtwork: MPMediaItemArtwork(boundsSize: defaultArtwork.size) { _ in defaultArtwork } ] as [String: Any] if let artwork = artwork { guard let url = URL(string: artwork) else { return } let (data, response) = try await URLSession.shared.data(from: url) guard (response as? HTTPURLResponse)?.statusCode == 200 else { return } guard let image = UIImage(data: data) else { return } nowPlayingInfo[MPMediaItemPropertyArtwork] = MPMediaItemArtwork(boundsSize: image.size) { _ in image } } MPNowPlayingInfoCenter.default().nowPlayingInfo = nowPlayingInfo } the app crashes when hitting MPMediaItemPropertyArtwork: MPMediaItemArtwork(boundsSize: defaultArtwork.size) { _ in defaultArtwork } or nowPlayingInfo[MPMediaItemPropertyArtwork] = MPMediaItemArtwork(boundsSize: image.size) { _ in image } commenting out these two make the app work again. Again, no clue on why. Thanks in advance