geef een voorbeeld van async wait
Generated on 9/24/2024
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In Swift, the async and await keywords are used to handle asynchronous operations. An async function is one that can pause its execution to wait for a result, allowing other tasks to run in the meantime. The await keyword is used when calling an async function to indicate that the function may suspend at that point.
Here's a simple example of how async and await can be used in Swift:
func fetchData() async -> String {
// Simulate a network call
await Task.sleep(2 * 1_000_000_000) // Sleep for 2 seconds
return "Data fetched"
}
func processData() async {
let data = await fetchData()
print(data)
}
In this example, fetchData is an async function that simulates a network call by sleeping for 2 seconds. The processData function calls fetchData using the await keyword, indicating that it will wait for fetchData to complete before continuing.
For more detailed information on async functions and their performance, you can refer to the session Explore Swift performance (24:33) from WWDC 2024.
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