sarunw

extension KeyedEncodingContainer {
    
    mutating func encode(_ value: UIImage,
                         forKey key: KeyedEncodingContainer.Key) throws {
        
        let imageData = value.jpegData(compressionQuality: 1)
        let prefix = "data:image/jpeg;base64,"        
        
        guard let base64String = imageData?.base64EncodedString(options: .lineLength64Characters) else {
            throw EncodingError.invalidValue(value, EncodingError.Context(codingPath: codingPath, debugDescription: "Can't encode image to base64 string."))

sarunw

class OrderSummaryViewController: UIViewController {
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "checkout" {
            let vc = segue.destination as! DeliveryAddressViewController
            vc.cart = cart // pass along cart information to next view controller
        }
    }
}

sarunw

class OrderSummaryViewController: UIViewController {
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "checkout" {
            let vc = segue.destination as! ShippingOptionViewController
            vc.cart = cart // pass along cart information to next view controller
        }
    }
}

sarunw

class Cart {
    var items: [Product]
    var paymentMethod: PaymentMethod
    
    // Old implementation
    var deliveryAddress: String
    var shippingOption: ShippingOption
}

sarunw

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
  var window: UIWindow?
  private var purchaseCoordinator: PurchaseCoordinator
  
  func application(_ application: UIApplication,
                   didFinishLaunchingWithOptions launchOptions:
                     [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    
    let window = UIWindow(frame: UIScreen.main.bounds)

sarunw

// 1
protocol ProductListViewControllerDelegate: class {
    func productListViewController(_ vc: ProductListViewController, didSelectProduct product: Product)
}

class ProductListViewController: UIViewController {
    weak var delegate: ProductListViewControllerDelegate?
}

protocol ProductDetailViewControllerDelegate: class {

sarunw

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>StringsTable</key>
	<string>Root</string>
	<key>PreferenceSpecifiers</key>
	<array>
		<dict>
			<key>Type</key>

sarunw

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>StringsTable</key>
	<string>Child</string>
	<key>PreferenceSpecifiers</key>
	<array>
        <dict>
            <key>Type</key>

sarunw

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
    <dict>
        <key>StringsTable</key>
        <string>Root</string>
        <key>PreferenceSpecifiers</key>
        <array>
            <dict>
                <key>Type</key>

sarunw

version=$(/usr/libexec/PlistBuddy -c "Print CFBundleShortVersionString" "$PROJECT_DIR/$INFOPLIST_FILE")
build=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "$PROJECT_DIR/$INFOPLIST_FILE")

/usr/libexec/PlistBuddy -c "Set PreferenceSpecifiers:0:DefaultValue $version ($build)" "$SRCROOT/FunWithSettings/Settings.bundle/Root.plist"