Jun 17, 2015 · Swift needs a convention for saying what the name of a function is, including not only the function name itself (before the parentheses) but also the external names of the …

May 21, 2015 · The question of what purpose in serves has been well-answered by other users here; in summary: in is a keyword defined in the Swift closure syntax as a separator between …

One of the Swift Core Team members (I don't remember who that was exactly) said that Swift only has "optional protocol requirements" because it is needed for Obj-C interop. Also, the …

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, …

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 …

Jul 3, 2014 · I like the Swift 3 solution, but it does not work for me in Swift 4: "Cannot use mutating member on immutable value: 'urlQueryAllowed' is a get-only property".

The Swift Docs on Control Flow explain the idea behind that: Using a guard statement for requirements improves the readability of your code, compared to doing the same check with …

Jun 4, 2014 · How to concatenate string in Swift? In Objective-C we do like NSString *string = @"Swift"; NSString *resultStr = [string stringByAppendingString:@" is a new Programming …

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?

This does not only apply to function arguments where optional could be misleading, but also everywhere in Swift where you need to declare the meta type (struct and class) of a variable …