Your code was always wrong. You should not be setting the height of a manually added navigation bar yourself or placing it at the top of the view. You should pin the top of the navigation bar to the bottom of the status bar (e.g. the top of the Safe Area) and give it a … Read more
There should be only one sheet, so here is possible approach – use another sheet modifier and activate it by selection Tested with Xcode 12 / iOS 14 (iOS 13 compatible) extension Int: Identifiable { public var id: Int { self } } struct ContentView: View { @State private var selectedMovie: Int? = nil var … Read more
This is very well explained in WWDC 2019 video 415. You are merely looking at one special case of a broad language feature, namely property wrappers. A property wrapper (such as @State) is actually a way of referring to an instance of a type (usually a struct or enum) with the same name (such as … Read more
Yes (it’s possible): by conformance to protocol _ObjectiveCBridgeable (The following answer is based on using Swift 2.2 and XCode 7.3.) Just as I was pondering over whether to post or simply skip this question, I stumbled over swift/stdlib/public/core/BridgeObjectiveC.swift in the Swift source code, specifically the protocol _ObjectiveCBridgeable. I’ve briefly noticed the protocol previously at Swiftdoc.org, … 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
Update: This works properly in Xcode now – “Outlet Collection” is one of the connection options in Interface Builder, which creates something that looks like: @IBOutlet var labelCollection: [UILabel]! While we’re waiting for a fix, you can approximate this using a computed property. Let’s say my view has five UILabels that I want in a … Read more
The numbers: Int… parameter in sumOf is called a variadic parameter. That means you can pass in a variable number of that type of parameter, and everything you pass in is converted to an array of that type for you to use within the function. Because of that, the numbers parameter inside average is an … 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
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 believe these details are mainly part of the implementation of Swift’s IRGen – I don’t think you’ll find any friendly structs in the source showing you the full structure of various Swift function values. Therefore if you want to do some digging into this, I would recommend examining the IR emitted by the compiler. … Read more