Allow implicit self for weak self captures, after self is unwrapped

About 2 min

Allow implicit self for weak self captures, after self is unwrapped 관련

HACKING WITH SWIFT

What's new in Swift?

Allow implicit self for weak self captures, after self is unwrapped | Changes in Swift 5.8

Allow implicit self for weak self captures, after self is unwrapped

Available from Swift 5.8

SE-0365 (apple/swift-evolution) takes another step towards letting us remove self from closures by allowing an implicit self in places where a weak self capture has been unwrapped.

For example, in the code below we have a closure that captures self weakly, but then unwraps self immediately:

import Foundation

class TimerController {
    var timer: Timer?
    var fireCount = 0

    init() {
        timer = Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { [weak self] timer in
            guard let self else { return }
            print("Timer has fired \(fireCount) times")
            fireCount += 1
        }
    }
}