How do I use ?: in Swift?

Question

I love this syntax in Objective-C, where a question mark and colon let you use a backup value:

NSString const name = [self getName] ?: @"backup";

and I want to use the same in Swift, but I get this when I try:

Is there any way to do this in Swift? If not, can I write a custom infix operator to do it?

Oh, it's called "null coalescing"? Thanks! That's really helpful for Googling it. — Ky -, Mar 25 '16 at 15:25
Named "nil coalescing operator" for Swift. :) https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/BasicOperators.html#//apple_ref/doc/uid/TP40014097-CH6-ID72 — Eric Aya, Mar 25 '16 at 15:32

Ky - · Answer 1 · 2016-03-25T15:43:15.253

14

It's called a null (or nil) coalescing operator, and the Swift syntax is:

let name = getName() ?? "backup";

edited Mar 25 '16 at 15:43

answered Mar 25 '16 at 15:26

Ky -

1 Answers1