How can I cancel Task in swift
Asked on 2025-10-11
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To cancel a task in Swift, you can use the cancel() method on a Task instance. Swift's concurrency model allows you to manage tasks, which are the fundamental units of concurrent execution. When a task is no longer needed, you can cancel it to free up resources and prevent unnecessary work.
Here's a basic example of how you might cancel a task:
let task = Task {
// Perform some work
for i in 0..<10 {
if Task.isCancelled {
print("Task was cancelled")
return
}
print("Working on \(i)")
try await Task.sleep(nanoseconds: 1_000_000_000) // Simulate work
}
}
// Cancel the task
task.cancel()
In this example, the task checks if it has been cancelled using Task.isCancelled and exits early if it has been. This is a common pattern to ensure that tasks can be cancelled gracefully.
For more detailed information on concurrency in Swift, you might find the session A Swift Tour: Explore Swift’s features and design helpful, as it covers concurrency concepts in Swift.
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