The problem here is that you are using self before the class is fully initialised. You can either have a getter which will be called every time you access the variable or compute it lazily. Here is some code: class TableViewController: UITableViewController { let mydate = NSDate() var items : [(Int,Int,Int,String,NSDate)] { get { return … Read more
You could give the compiler more information: let recordSettings : [String : Any] = [ AVFormatIDKey: kAudioFormatMPEG4AAC, AVEncoderAudioQualityKey : AVAudioQuality.Max.rawValue, AVEncoderBitRateKey : 320000, AVNumberOfChannelsKey: 2, AVSampleRateKey : 44100.0 ]
I was going to say “What have you tried?”, but it’s Friday afternoon and I got off work early, so I took the opportunity to translate my old ObjC code. Here it is, suitable for Playground. It should be trivial to put it in your UIView. Swift 2 See below for Swift 3 & Swift … Read more
As of Swift 4, there are no methods in the standard library to enumerate the elements of an OptionSetType (Swift 2) resp. OptionSet (Swift 3, 4). Here is a possible implementation which simply checks each bit of the underlying raw value, and for each bit which is set, the corresponding element is returned. The “overflow … Read more
You’re getting your first error because much of Cocoa Touch has been audited to support Objective-C generics, meaning elements of things like arrays and sets can now be typed. As a result of this, the signature of this method has changed and since what you’ve written no longer matches this, you’re given an error explaining … Read more
The solution was simple to switch the order in the extension clause: extension UIViewController where Self: KeyboardNotificationDelegate should be extension KeyboardNotificationDelegate where Self: UIViewController
In Swift 4, use upperBound and subscript operators and open range: let snippet = “1111 West Main Street Beverly Hills, CA 90210 Phone: 123.456.7891” if let range = snippet.range(of: “Phone: “) { let phone = snippet[range.upperBound…] print(phone) // prints “123.456.7891” } Or consider trimming the whitespace: if let range = snippet.range(of: “Phone:”) { let phone … Read more
in Swift 3 you could use extensions to solve that, however it’s a bit ugly. Hope for a better solution in next swift versions. import UIKit protocol TestProtocol { func testFunction(a: Int, b: Int?) -> String } extension TestProtocol { func testFunction(a: Int, b: Int? = nil) -> String { return testFunction(a: a, b: b) … Read more
Swift 3, 4 extension Array where Element: Comparable { func containsSameElements(as other: [Element]) -> Bool { return self.count == other.count && self.sorted() == other.sorted() } } // usage let a: [Int] = [1, 2, 3, 3, 3] let b: [Int] = [1, 3, 3, 3, 2] let c: [Int] = [1, 2, 2, 3, 3, … Read more
@user1007522 Could you post the entire source code for FakeViewController? You should have access to foo() from your vc variable. If you do not, I suspect something else is in play here. I found the following definitions much easier to understand (copied from UseYourLoaf – Swift 4 Access Levels) The Five Access Levels of Swift … Read more