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Working on async code in a playground

Published on 17 Jun 2017
Discover page available: Concurrency

Want to work on your asynchronous code in a Swift Playground? Just set needsIndefiniteExecution to true to keep it running:

import PlaygroundSupport

PlaygroundPage.current.needsIndefiniteExecution = true

DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
    let greeting = "Hello after 3 seconds"

To stop the playground from executing, simply call PlaygroundPage.current.finishExecution().