Swift await async

func myFunction() {
    let array = [Object]()
    let group = DispatchGroup() // initialize

    array.forEach { obj in

        // Here is an example of an asynchronous request which use a callback
        group.enter() // wait
        LogoRequest.init().downloadImage(url: obj.url) { (data) in
            if (data) {
                group.leave() // continue the loop
            }
        }
    }

    group.notify(queue: .main) {
        // do something here when loop finished
    }
}

Similar codes

3 votes379 views2 answers
Add border to button swiftui
Swift
0 vote381 views1 answer
Swift Markup in Xcode 11
Swift
0 vote373 views1 answer
Swift lazy
Swift
0 vote315 views1 answer
Placeholder color swift
Swift
0 vote422 views1 answer
Ios swift local storage with icloud
Swift
0 vote391 views1 answer
Swift reduce function
Swift
0 vote374 views1 answer
Move to nect cell of collection after some time automatically in ios swift
Swift
0 vote388 views1 answer
No module like realmswift
Swift
1 vote410 views1 answer
Pop last element array swift
Swift
1 vote393 views1 answer
Swift dictionary contains key
Swift