erdemildiz

IOS 15

extension UIApplication {
    var firstKeyWindow: UIWindow? {
        return UIApplication.shared.connectedScenes
            .compactMap { $0 as? UIWindowScene }
            .filter { $0.activationState == .foregroundActive }
            .first?.keyWindow

erdemildiz

import Foundation

let tcNumber = "{TC_NUMBER}}"
let lastDigitOfTCNumber = "\(tcNumber)".suffix(1)
let totalOfNumbers = tcNumber.prefix(10).reduce(0) { Int($0) + (Int("\($1)") ?? 0) }
let lastDigitOfTotalNumber = "\(totalOfNumbers)".suffix(1)

if
    tcNumber.count == 11,
    lastDigitOfTCNumber == lastDigitOfTotalNumber {

erdemildiz

// Source: https://www.avanderlee.com/concurrency/task-groups-in-swift/

let images = try await withThrowingTaskGroup(of: UIImage.self, returning: [UIImage].self) { taskGroup in
    let photoURLs = try await listPhotoURLs(inGallery: "Amsterdam Holiday")
    for photoURL in photoURLs {
        taskGroup.addTask { try await downloadPhoto(url: photoURL) }
    }

    var images = [UIImage]()

erdemildiz

import CoreData
import UIKit

// ./NoteList.xcdatamodeld

class CoreDataManager {
  static let sharedInstance = CoreDataManager()
  
  private init() { }

erdemildiz

Safari : com.apple.Safari
Chrome: com.google.Chrome
Firefox: org.mozilla.firefox
Opera: com.operasoftware.Opera

// Learn Bundle Id on Termina
 osascript -e 'id of app "Opera"'  

erdemildiz

enum PhotoListConstant {
    static let listURL = "https://jsonplaceholder.typicode.com/photos"
}

enum NetworkError: Error {
    case invalidURL
}

final class PhotoListViewModel: ObservableObject {
    @Published var photoItems = [PhotoItemModel]()

erdemildiz

struct PhotoItemModel: Codable, Identifiable {
    let id: Int
    let title: String
    let url: String
    let thumbnailUrl: String
}

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struct PhotoListView: View {
    // 1
    @StateObject var viewModel = PhotoListViewModel()
    var body: some View {
        NavigationView {
            List(viewModel.photoItems) { photoItem in
                // 2
                ListItem(photoItem: photoItem)
            }
            .navigationTitle("Photo List")

erdemildiz

func fetchPerson(by userId: String) async -> Person {
	do { 
  	// Tell compiler wait for the result with `await` keyword
		let (data, response) = try await URLSession.shared.data(from: <URL>)
	} catch {
    // 	...
	}
}

erdemildiz

// Source: https://www.swiftbysundell.com/articles/the-power-of-extensions-in-swift/

extension Publisher {
    func asResult() -> AnyPublisher<Result<Output, Failure>, Never> {
        self.map(Result.success)
            .catch { error in
                Just(.failure(error))
            }
            .eraseToAnyPublisher()
    }