How do I use ?: in Swift? [duplicate]

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?

Answer 1

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

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