Chapter 5: Self capturing in the continuation

📚 Official Books Modern Concurrency in Swift
1

In the shareLocation method, we call withCheckedThrowingContinuation method whose closure weakly references self. What is the purpose of weakly capturing self in this closure if the manager is captured strongly?

func shareLocation() async throws {
    let location: CLLocation = try await
    withCheckedThrowingContinuation { [weak self] continuation in // <- Why weak self?
        self?.delegate = ChatLocationDelegate(manager: manager, continuation: continuation)
        if manager.authorizationStatus == .authorizedWhenInUse {
        manager.startUpdatingLocation()
        }
    }
    ...
}

source

Xcode 14.3.1 also pays attention to this and displays a warning message

Reference to property ‘manager’ in closure requires explicit use of ‘self’ to make capture semantics explicit; this is an error in Swift 6