I think the rule must be that a Task initializer in a MainActor method runs on the main thread. And all methods of a view controller are MainActor methods by default; plus, I observe that if I declare test2 to be nonisolated, its Task operation runs on a background thread instead of the main thread. … Read more
You were close, but return inside the closure returns from the closure, not from the outer function. Therefore only SecRandomCopyBytes() should be called in the closure, and the result passed back. func generateRandomBytes() -> String? { var keyData = Data(count: 32) let result = keyData.withUnsafeMutableBytes { (mutableBytes: UnsafeMutablePointer<UInt8>) -> Int32 in SecRandomCopyBytes(kSecRandomDefault, 32, mutableBytes) } … Read more
some View is an opaque result type as introduced by SE-0244 and is available in Swift 5.1 with Xcode 11. You can think of this as being a “reverse” generic placeholder. Unlike a regular generic placeholder which is satisfied by the caller: protocol P {} struct S1 : P {} struct S2 : P {} … Read more
The syntax is simply: // to run something in 0.1 seconds DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) { // your code here } Note, the above syntax of adding seconds as a Double seems to be a source of confusion (esp since we were accustomed to adding nsec). That “add seconds as Double” syntax works because deadline … Read more
Most likely you want to register xib for the cell and not for the view itself: mediaProfileCollectionView.register( UINib(nibName: “MediaProfileCollectionViewCell”, bundle: nil), forCellWithReuseIdentifier: “MediaProfileCollectionViewCell” )