swift3

问题 UPDATE: As of Xcode 9.3, which includes Swift 4.1 , the array equality works as expected , and the code in the original question compiles without errors. However, please see the accepted answer , because it provides a better, more modern solution. The original question is below: When I try to declare an instance of a generic enum with type [Post] , I get an error saying Type '[Post]' does not conform to protocol 'Equatable' which is nonsense, because Post conforms to Equatable and I can

问题 I tried to archive my App and get this error: Command failed due to signal: Segmentation fault: 11 When I Build it everything went fine, also on real devices. While archiving this happens. Any Ideas how to fix ? This is a part of the error: 0 swift 0x000000010f79f3ad PrintStackTraceSignalHandler(void*) + 45 1 swift 0x000000010f79eb56 SignalHandler(int) + 790 2 libsystem_platform.dylib 0x00007fffc82d5bba _sigtramp + 26 3 libsystem_platform.dylib 0x0000000000000040 _sigtramp + 936551584 4 swift

问题 I tried to archive my App and get this error: Command failed due to signal: Segmentation fault: 11 When I Build it everything went fine, also on real devices. While archiving this happens. Any Ideas how to fix ? This is a part of the error: 0 swift 0x000000010f79f3ad PrintStackTraceSignalHandler(void*) + 45 1 swift 0x000000010f79eb56 SignalHandler(int) + 790 2 libsystem_platform.dylib 0x00007fffc82d5bba _sigtramp + 26 3 libsystem_platform.dylib 0x0000000000000040 _sigtramp + 936551584 4 swift

问题 I just did the last Xcode update (8.3), and I have the message : “Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift. Use the [Edit > Convert > To Current Swift Syntax…] menu to choose a Swift version or use the Build Settings editor to configure the build setting directly. Knowing that the "Use Legacy Swift Language Version" option has just been removed from the build settings, how can I generate my app in Swift 2.3 without doing any

问题 I have a wkwebview in my app, and I want to add an activity indicator to it. I want it to where it appears when the webview is loading and disappears whenever it is finished loading, it disappears. Can you give me some code to do this? Here's my code right now: @IBOutlet weak var Activity: UIActivityIndicatorView! var webView : WKWebView! @IBOutlet var containerView: UIView? = nil override func viewDidLoad() { super.viewDidLoad() guard let url = URL(string: "http://ifunnyvlogger.wixsite.com

问题 I have a wkwebview in my app, and I want to add an activity indicator to it. I want it to where it appears when the webview is loading and disappears whenever it is finished loading, it disappears. Can you give me some code to do this? Here's my code right now: @IBOutlet weak var Activity: UIActivityIndicatorView! var webView : WKWebView! @IBOutlet var containerView: UIView? = nil override func viewDidLoad() { super.viewDidLoad() guard let url = URL(string: "http://ifunnyvlogger.wixsite.com

问题 When I declare static parameter in extension of class then I have to write @nonobjc before variable like @nonobjc static let test = "test" and sometimes i have to write @objc before method, so what is use of @objc and @nonobjc in swift. can anyone help me for this problem ? 回答1: This is explained in the Apple's official documentation about Objective-C - Swift interoperability: When you use the @objc(name) attribute on a Swift class, the class is made available in Objective-C without any

问题 When I declare static parameter in extension of class then I have to write @nonobjc before variable like @nonobjc static let test = "test" and sometimes i have to write @objc before method, so what is use of @objc and @nonobjc in swift. can anyone help me for this problem ? 回答1: This is explained in the Apple's official documentation about Objective-C - Swift interoperability: When you use the @objc(name) attribute on a Swift class, the class is made available in Objective-C without any

问题 I am trying to programmatically set / or change the embedded View Controller inside a Controller View . I have 3 different View Controllers, that I would like to show in the Container View, all depending on if the user is logged in or not. I have looked around and tried a bunch of code, I found one that worked, but the code changed the self view, and not the view containers view. A lot of the code I have tried have also not been in Swift 3, so as a new app developer, this has been quite

问题 I am trying to programmatically set / or change the embedded View Controller inside a Controller View . I have 3 different View Controllers, that I would like to show in the Container View, all depending on if the user is logged in or not. I have looked around and tried a bunch of code, I found one that worked, but the code changed the self view, and not the view containers view. A lot of the code I have tried have also not been in Swift 3, so as a new app developer, this has been quite