In iOS 11, you don’t have to. Just let the observer go out of scope. There is no penalty any longer for letting an observer die before the observed or for letting the observed die before the observer, so you have no actual work to do. On the other hand, if you really want to … Read more
In Swift 3 you can omit the associated value of type Void: let res: Result<Void> = .success() In Swift 4 you have to pass an associated value of type Void: let res: Result<Void> = .success(()) // Or just: let res = Result.success(())
I ended up having to implement my own class to encode/decode Any values. It’s not pretty, but it seems to work: class JSONAny: Codable { public let value: Any static func decodingError(forCodingPath codingPath: [CodingKey]) -> DecodingError { let context = DecodingError.Context(codingPath: codingPath, debugDescription: “Cannot decode JSONAny”) return DecodingError.typeMismatch(JSONAny.self, context) } static func encodingError(forValue value: Any, … Read more
You should be able to pass a String directly to a C function expecting const char * and it will be automatically converted to a null-terminated UTF-8 string: let string = “string” let node = artnet_new(string, 1) See Interacting with C APIs for more information. Here is the relevant excerpt: When a function is declared … Read more
Since you linked to my answer to another question, I will expand that one to answer yours. Truth is, all keys are known at runtime if you know where to look: struct GenericCodingKeys: CodingKey { var intValue: Int? var stringValue: String init?(intValue: Int) { self.intValue = intValue; self.stringValue = “\(intValue)” } init?(stringValue: String) { self.stringValue … Read more
In Swift 4, tuples are treated more stricter than ever. This closure type: (Void)->Void means a closure which takes a single argument, of which the type is Void returns Void, meaning returns no value So, try any of the followings: Pass a value of type Void to the closure. (An empty tuple () is the … Read more
If you target iOS 13.0+ or macOS 10.15+, use Apple’s CryptoKit import CryptoKit let secretString = “my-secret” let key = SymmetricKey(data: Data(secretString.utf8)) let string = “An apple a day keeps anyone away, if you throw it hard enough” let signature = HMAC<SHA256>.authenticationCode(for: Data(string.utf8), using: key) print(Data(signature).map { String(format: “%02hhx”, $0) }.joined()) // 1c161b971ab68e7acdb0b45cca7ae92d574613b77fca4bc7d5c4effab89dab67
If you have already double-checked the basic setup for the “google maps ios-sdk” with an APIkey for your app’s bundle identifier here and still have the same problem then probably you have not enabled the google maps API. Go to your app-project’s dashboard on https://console.developers.google.com and click the “ENABLE APIS AND SERVICES”. There, under the … Read more
Why you got this error Previously, your attributes is defined as [String: Any], where the key comes from NSAttributedStringKey as a string or NSAttributedString.Key in Swift 4.2 During the migration, the compiler tries to keep the [String: Any] type. However, NSAttributedStringKey becomes a struct in swift 4. So the compiler tries to change that to … Read more
Try this one it’s Working code (Swift 4). func NKPlaceholderImage(image:UIImage?, imageView:UIImageView?,imgUrl:String,compate:@escaping (UIImage?) -> Void){ if image != nil && imageView != nil { imageView!.image = image! } var urlcatch = imgUrl.replacingOccurrences(of: “https://stackoverflow.com/”, with: “#”) let documentpath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] urlcatch = documentpath + “https://stackoverflow.com/” + “\(urlcatch)” let image = UIImage(contentsOfFile:urlcatch) if image != nil … Read more