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import UIKit | |
class ViewController: UIViewController { | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
Task.detached { | |
await self.heavyCall() | |
} | |
} |
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import UIKit | |
class ViewModel { | |
func heavyCall() { | |
var count = 0 | |
while count < 1_000_000_000 { | |
count += 1 | |
} | |
print(Thread.isMainThread) // false | |
} |
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import UIKit | |
class ViewController: UIViewController { | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
Task.detached { | |
self.heavyCall() | |
} | |
} |
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import UIKit | |
class ViewController: UIViewController { | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
Task.detached { | |
await self.heavyCall() | |
} | |
} |
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// ref: https://docs.swift.org/swift-book/documentation/the-swift-programming-language/concurrency/#Defining-and-Calling-Asynchronous-Functions | |
func generateSlideshow(forGallery gallery: String) async { | |
let photos = await listPhotos(inGallery: gallery) | |
for photo in photos { | |
// ... render a few seconds of video for this photo ... | |
await Task.yield() | |
} | |
} |
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import Foundation | |
// ref: https://docs.swift.org/swift-book/documentation/the-swift-programming-language/properties/#Property-Wrappers | |
@propertyWrapper | |
struct TwelveOrLess { | |
private var number = 0 | |
@MainActor | |
var wrappedValue: Int { | |
get { return number } |
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import UIKit | |
class ViewController: UIViewController { | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
Task.detached { | |
let y = Y() | |
await y.f() | |
} |
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import UIKit | |
class ViewController: UIViewController { | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
Task.detached { | |
let y = Y() | |
y.f() | |
} |
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import UIKit | |
class ViewController: UIViewController { | |
var callback: () -> Void = { @MainActor in | |
print(Thread.isMainThread) // true or false? | |
} | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
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import UIKit | |
class ViewController: UIViewController { | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
Task.init { | |
try await sleep() // 何秒かかる? | |
} | |
} |
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