GonsiOS

func test() async { await withTaskGroup(of: Int.self) { taskGroup in [3,1,2].forEach { i in taskGroup.addTask { print("시작 \(i)") try? await Task.sleep(for: .seconds(i)) return i } } for await element in taskGroup { print("완료 \(element)") } } print("모두 완료")}Task { ..

SwiftUI 버전 보러가기 import UIKit// 팝오버class ViewController: UIViewController { let button = UIButton(type: .system) override func viewDidLoad() { super.viewDidLoad() button.setTitle("Popover", for: .normal) let action = UIAction(handler: showPopover) button.addAction(action, for: .touchUpInside) view.addSubview(button) b..

let numbers = [1, 2, 3, 4, 5] //앞에서 2개 가져오기 print(numbers.prefix(2)) // Prints "[1, 2]" //최대 개수 넘어도 상관없음 print(numbers.prefix(10)) // Prints "[1, 2, 3, 4, 5]" //뒤에서 2개 가져오기 print(numbers.suffix(2)) // Prints "[4, 5]" //최대 개수 넘어도 상관없음 print(numbers.suffix(10)) // Prints "[1, 2, 3, 4, 5]" iOS Swift Xcode