The other solution is correct in that it will get you a reference to the application’s delegate, but this will not allow you to access any methods or variables added by your subclass of UIApplication, like your managed object context. To resolve this, simply downcast to “AppDelegate” or what ever your UIApplication subclass happens to … Read more
Swift 4.2+ Swift 4.2 shipped with Xcode 10 introduces new easy-to-use random functions for many data types. You can call the random() method on numeric types. let randomInt = Int.random(in: 0..<6) let randomDouble = Double.random(in: 2.71828…3.14159) let randomBool = Bool.random()
Attention: Please see Leo Dabus’ answer for a proper implementation for Swift 4 and Swift 5. Swift 4 or later The Substring type was introduced in Swift 4 to make substrings faster and more efficient by sharing storage with the original string, so that’s what the subscript functions should return. Try it out here extension … Read more
Update 2: As we can see in Sort.swift, sort() now uses a “modified timsort” in Swift 5. Timsort is a … hybrid stable sorting algorithm, derived from merge sort and insertion sort … In the worst case, Timsort takes O(n log n) comparisons to sort an array of n elements. In the best case, which … Read more
As Kamaros suggests, you can call NSApplescript directly without having to launch a separate process via NSTask (as CRGreen suggests.) Swift Code let myAppleScript = “…” var error: NSDictionary? if let scriptObject = NSAppleScript(source: myAppleScript) { if let output: NSAppleEventDescriptor = scriptObject.executeAndReturnError( &error) { print(output.stringValue) } else if (error != nil) { print(“error: \(error)”) } … Read more
You need to decrease priority of content resistance in makeUIView (so content would not push external layout set in SwiftUI) like below func makeUIView(context: UIViewRepresentableContext<MyField>) -> UITextField { let field = UITextField(frame: .zero) field.setContentCompressionResistancePriority(.defaultLow, for: .horizontal) …
You can just add a computed property to your struct to return a Dictionary with your values. Note that Swift native dictionary type doesn’t have any method called value(forKey:). You would need to cast your Dictionary to NSDictionary: struct Test { let name: String let age: Int let height: Double var dictionary: [String: Any] { … Read more
This feature is called “Implicit Member Expression” An implicit member expression is an abbreviated way to access a member of a type, such as an enumeration case or a class method, in a context where type inference can determine the implied type. It has the following form: .member name But, as of right now, I … Read more
I think you can get there by adding an (empty) extension to UIViewController and then specifying your detailViewController attribute using a composed protocol of the empty extension and your DetailViewController. Like this: protocol UIViewControllerInject {} extension UIViewController : UIViewControllerInject {} Now all subclasses of UIViewController satisfy protocol UIViewControllerInject. Then with that, simply: typealias DetailViewControllerComposed = … Read more