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import UIKit | |
class ViewController: UIViewController { | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
Task.detached { | |
let y = Y() | |
y.f() | |
} | |
} | |
} | |
protocol P { | |
@MainActor func f() | |
} | |
struct Y: P {} | |
extension Y { | |
func f() { | |
print(Thread.isMainThread) // true or false? | |
} | |
} |
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