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"
    print(greeting)
}

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

Manning

Enter Manning’s September Showdown — a 30-day challenge that gives developers a chance to test their knowledge against their peers. A new trivia question, and a brand new prize to win, is published every day throughout September.

Check out today’s questionChecking out this sponsor helps support my work. More about ads on this site.