naldal

func fetchWeatherHistory(completion: @escaping ([Double]) -> Void) {
    // 복잡한 네트워크 로직수행. 여기서는 단순하게 100,000개의 온도배열 생성
    DispatchQueue.global().async {
        let results = (1...100_000).map { _ in Double.random(in: -10...30) }
        completion(results)
    }
}

func calculateAverageTemperature(for records: [Double], completion: @escaping (Double) -> Void) {
    // fetchWeatherHistory에서 넘어온 온도배열의 평균값을 구함

naldal

func fetchWeatherHistory(completion: @escaping ([Double]) -> Void) {
    // 복잡한 네트워크 로직수행; 여기에서는 단순히 100,000개의 온도배열을 랜덤생성함
    DispatchQueue.global().async {
        let results = (1...100_000).map { _ in Double.random(in: -10...30) }
        completion(results)
    }
}

func calculateAverageTemperature(for records: [Double], completion: @escaping (Double) -> Void) {
    // Sum our array then divide by the array size

naldal

func fetchBookShop(bookShopName: String) async -> [String] {
  // fetch book shop logic...
  return ["fetch Book Shop Result"]
}

func fetchBooks(bookName: String) async -> [String] {
  // fetch books logic...
  return ["fetch Books Result"]
}

naldal

func fetchBookShop(bookShopName: String, completion: @escaping (_ matchBookShopList: [String]) -> Void) {
  DispatchQueue.global().async {
    // fetch book shop logic...
    completion(["fetch Book Shop Result"])
  }
}

func fetchBooks(bookName: String, completion: @escaping (_ books: [String]) -> Void) {
  DispatchQueue.global().async {
    // fetch books logic...

naldal

func fetchBookShop(bookShopName: String, completion: @escaping (_ matchBookShopList: [String]) -> Void) {
  DispatchQueue.global().async {
    // fetch book shop logic...
    completion(["fetch Book Shop Result"])
  }
}

func fetchBooks(bookName: String, completion: @escaping (_ books: [String]) -> Void) {
  DispatchQueue.global().async {
    // fetch books logic...

naldal

func fetchBookShop(bookShopName: String, completion: @escaping (_ matchBookShopList: [String]) -> Void) {
  DispatchQueue.global().async {
    // fetch book shop logic ...
    completion(["fetch Book Shop Result"])
  }
}

naldal

func fetchBookShop(bookShopName: String, completion: @escaping (_ matchBookShopList: [String]) -> Void) {
  DispatchQueue.global().async {
    completion(["fetch Book Shop Result"])
  }
}

naldal

func fetchBookShop(bookShopName: String, completion: @escaping (_ bookShop: [String]) -> Void) {
  let result: [String] = fetch logic ...
  completion(result)
}

naldal

override func viewDidAppear(_ animated: Bool) {
  super.viewDidAppear(animated)
  
  setupUI()
  connectUIControls()
  createDataSource()
  listenForChanges()
}

naldal

class MainStepper: Stepper {
    
    let steps = PublishRelay<Step>()
    private let disposeBag = DisposeBag()
    
    var initialStep: Step {
        return FlowSteps.mainSearchIsRequired
    }
    
}