Optional @escaping Closure?

Asked Mar 06 '19 at 19:53

Active Mar 07 '19 at 00:00

Viewed 3,023 times

I want to use Optional @escaping closures to execute something when the closure is called in the function, but if i make it optional like that:

func checkForFavorites(_ completion: (@escaping (Bool) -> Void)?) {

}

i get this error

@escaping attribute may only be used in function parameter position

This may be an easy question so please have understanding

edited Mar 06 '19 at 19:55

Sulthan

asked Mar 06 '19 at 19:53

SwiftNewling

6

Optional closures are always escaping. Related https://stackoverflow.com/questions/47417920/swift-optional-escaping-closure?rq=1 – Sulthan Mar 06 '19 at 19:55
1

`(@escaping (Bool) -> Void)?)` => `@escaping ((Bool) -> Void)?)`? – Larme Mar 06 '19 at 20:01
Larme: @escaping attribute only applies to function types – SwiftNewling Mar 06 '19 at 20:06
2

Possible duplicate of [Swift 3 optional escaping closure parameter](https://stackoverflow.com/questions/39618803/swift-3-optional-escaping-closure-parameter) – Robert Dresler Mar 06 '19 at 20:33

0 Answers0