Creating async/await functions in a Swift Playground
Swift Playgrounds in Xcode are super useful for trying out Swift syntax either for learning, or for refining code before incorporating it into a real project. By default async functions can't be executed in a playground, but it is possible. Here's an example:
1import Foundation
2import _Concurrency
3import PlaygroundSupport
4var success: Bool
5
6
7func add(_ a: Int, _ b: Int) async -> Int {
8 try? await Task.sleep(for: .seconds(5))
9 return a + b
10}
11
12Task {
13 let c = await add(5, 4)
14 print("\(c)") // 9
15 PlaygroundPage.current.finishExecution()
16}
17
18PlaygroundPage.current.needsIndefiniteExecution = true