What is the purpose of writing comments in Swift as: // MARK: This is a comment When you can also do: // This is a comment What does the // MARK achieve?

Swift uses an generic type to make it explicit that the number is known at compile time. To summarize, MemoryLayout<Type>.size is the space required for a single instance while …

Swift - Convert Array to Dictionary Asked 7 years, 3 months ago Modified 4 years, 6 months ago Viewed 15k times

Jun 6, 2014 · As stated in other answers, as of Swift 3 placing var before a variable has been deprecated. Though not stated in other answers is the ability to declare an inout parameter. …

Jun 3, 2019 · Swift 5.1 does not appear to have some as a keyword, and I don't see what else the word some could be doing there, since it goes where the type usually goes. Is there a new, …

How to format localised strings in Swift? Asked 9 years, 8 months ago Modified 8 months ago Viewed 40k times

Swift 3.0, 4.0 There are mainly two ways of checking optional for nil. Here are examples with comparison between them 1. if let if let is the most basic way to check optional for nil. Other …

Sep 20, 2014 · Back in Swift 1.x, print did not add newline characters at the end of the printed string, whereas println did. But nowadays, print always adds the newline character at the end …

Jun 4, 2014 · I'm trying to work out an appropriate singleton model for usage in Swift. So far, I've been able to get a non-thread safe model working as: class var sharedInstance: …

1073 All of the following examples use var str = "Hello, playground" Swift 4 Strings got a pretty big overhaul in Swift 4. When you get some substring from a String now, you get a Substring type …