What is the rationale behind Swift compiler being overly strict about Protocol conformances? For instance, consider the following code: protocol TestProtocol { func testFunction() } actor TestClass: TestProtocol { func testFunction() { } } The build fails with the error…
I’m learning async/await and trying to fetch an image from a URL off the main thread to avoid overloading it, while updating the UI afterward. Before starting the fetch, I want to show a loading indicator (UI-related work). I’ve implemented…
In Xcode 16, I get this error, related to Swift 6. Capture of 'timer' with non-sendable type 'Timer' in a @Sendable closure; this is an error in the Swift 6 language mode How can I make this code Swift 6…
I'm working on a Swift 6 project and need to manage a static variable that stores network responses. The current implementation isn't concurrency-safe because multiple threads can access and modify the shared state, leading to race conditions. Previously this code…
The following code runs fine when compiled with Swift 5, but crashes when compiled with Swift 6 (stack trace below). In the draw method, commenting out the addCompletedHandler line fixes the problem. I'm testing on iOS 18.0 and see the…
I got a build error for below code after using xcode 16 Cast from 'ObservableCollection<E>.SectionsChange' (aka 'CollectionChange<Int, ObservableArray<E>>') to unrelated type 'ObservableCollection<Int>.SectionsChange' (aka 'CollectionChange<Int, ObservableArray<Int>>') always fails for the section protocol method I implemented, first cast is still working class…
How can I call in Swift 6 a normal async function from a MainActor function? I do not want to execute URLRequests on the MainThread I want to switch from the Main Thread to an async Thread but I have…
In my Swift 5 project I have this extension to pass an async function to Publisher.map: import Combine public extension Publisher { func asyncMap<T>( _ asyncFunc: @escaping (Output) async -> T ) ->…
This is a similar problem to How to convert `VNDocumentCameraViewControllerDelegate` to Swift 6 Concurrency but one warning is new, so this may require different solution. I have the following code: @MainActor final class InterstitialWrapper: NSObject { ... } extension InterstitialWrapper:…
I have a function that returns the memory use of a device. It uses mach_task_self_ which gives a warning that it is not concurrency-safe. task_info(mach_task_self_, task_flavor_t(TASK_VM_INFO), intPtr, &count) According to this answer you can import and mark as @preconcurrency however…