January 2023 – Malcolm Hall

Concurrency

@MainActor does not always mean main thread

Seems to me some developers think that @MainActor means “always main thread” and has the same behaviour as DispatchQueue.main.async which I don’t think is try. For example, the code below outputs: Because the Database class is not marked as @MainActor then loadModel will in fact be on a background thread, Read more…

By malhal, 2 years31st January 2023 ago

SwiftUI

NavigationSplitView with List selection of different types

I came across an interesting Stack Overflow question about how to support List selection of different types when using NavigationSplitView when in regular width, e.g. on iPad landscape. This problem doesn’t arise with NavigationStackView because multiple ForEach can simply iterate an array of each value and then there is a Read more…

By malhal, 2 years12th January 2023 ago