Here is a demo of possible approach – use publisher with changed scrolled content coordinates with debounce, so event reported only after coordinates stopped changing. Tested with Xcode 12.1 / iOS 14.1 UPDATE: verified as worked with Xcode 13.3 / iOS 15.4 Note: you can play with debounce period to tune it for your needs. … Read more
you have to pass your async function the handler to call later on: func application(application: UIApplication!, performFetchWithCompletionHandler completionHandler: ((UIBackgroundFetchResult) -> Void)!) { loadShows(completionHandler) } func loadShows(completionHandler: ((UIBackgroundFetchResult) -> Void)!) { //…. //DO IT //…. completionHandler(UIBackgroundFetchResult.NewData) println(“Background Fetch Complete”) } OR (cleaner way IMHO) add an intermediate completionHandler func application(application: UIApplication!, performFetchWithCompletionHandler completionHandler: ((UIBackgroundFetchResult) -> Void)!) … Read more
The [weak self] in anotherFunctionWithTrailingClosure is not needed. You can empirically test this: class Experiment { func someFunctionWithTrailingClosure(closure: @escaping () -> Void) { print(“starting”, #function) DispatchQueue.main.asyncAfter(deadline: .now() + 1) { closure() print(“finishing”, #function) } } func anotherFunctionWithTrailingClosure(closure: @escaping () -> Void) { print(“starting”, #function) DispatchQueue.main.asyncAfter(deadline: .now() + 1) { closure() print(“finishing”, #function) } } func … Read more
Popular patterns for solving this problem are closures and delegates. If you want to use closures, you would do something like this: final class MyCell: UITableViewCell { var actionBlock: (() -> Void)? = nil then @IBAction func didTapButton(sender: UIButton) { actionBlock?() } then in your tableview delegate: func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) – > … Read more
From the Swift Language Guide (Naming Constants & Variables section) If you need to give a constant or variable the same name as a reserved Swift keyword, surround the keyword with back ticks (`) when using it as a name. However, avoid using keywords as names unless you have absolutely no choice. enum MyEnum { … Read more
This warning is telling you there’s a conflict in your constraints. Reduce the priority of the height constraint to 999 and it will go away. Tested it in your Github project and worked perfectly.
This is indeed expected behaviour – and is due to the fact that an Array in Swift (as well as many other collections in the standard library) is a value type with copy-on-write semantics. This means that its underlying buffer (which is stored indirectly) will be copied upon being mutated (and, as an optimisation, only … Read more
[FYI – Few users have reported that it stopped working on iOS 10] You can easily enable and disable push notifications in your application by calling registerForRemoteNotificationTypes and unregisterForRemoteNotificationTypes respectively again. I have tried this and it works.
Here’s my favorite implementation of binary search. It’s useful not only for finding the element but also for finding the insertion index. Details about assumed sorting order (ascending or descending) and behavior with respect to equal elements are controlled by providing a corresponding predicate (e.g. { $0 < x } vs { $0 > x … Read more
Update for iOS 15 and higher: There is a new Markdown formatting support for Text, such as: Text(“Some text [clickable subtext](some url) *italic ending* “) you may check WWDC session with a timecode for details The old answer for iOS 13 and 14: Unfortunately there is nothing that resembles NSAttributedString in SwiftUI. And you have … Read more