PetreVane

// Lazy methods

class Person {
    
    let name: String
    
    init(name: String) {
        
        self.name = name

PetreVane

// Lazy Closures
class Person {
    
    let name: String
    
    init(name: String) {
        self.name = name
    }
    
    // Remember to add the closing brace '()' at the end of the closure declaration

PetreVane

func decodeDatefrom(_ unixTime: String) -> String? {
        
        // converts comment date into meaningful date
        var decodedDate: String?
        
        if let unixTime = Double(unixTime) {
            let dateFormatter = DateFormatter()
            let date = Date(timeIntervalSince1970: unixTime)

PetreVane

extension UIImage {
// Usage:
// let scaledImage = image.scale(newWidth: 960.0)
    func reduceImageSize(to newWidth: CGFloat) -> UIImage {
        
        if self.size.width == newWidth {
            return self
        }
        
        // Calculates the scaling factor

PetreVane

   
extension PhotoDetailsVC: UIScrollViewDelegate {
    
    /// Returns the view that is expected to be zoomed
    /// - Parameter scrollView: A view that allows the scrolling and zooming of its contained views.
    
    func viewForZooming(in scrollView: UIScrollView) -> UIView? {
        return imageView
    }
    

PetreVane

    func retrieveUserInfo() throws -> User {
        
        let plistDecoder = PropertyListDecoder()
        let filePath = FileManager.documentsDirectory
        let file = filePath.appendingPathComponent("SavedUserData").appendingPathExtension("plist")
        guard let retrievedData = try? Data(contentsOf: file) else { print("Errors: \(Failure.missingFile.errorDescription)"); throw Failure.missingFile }
        guard let decodedUserData = try? plistDecoder.decode(User.self, from: retrievedData) else { print("Error: \(Failure.failedDecodingFile.errorDescription)"); throw Failure.failedDecodingFile}

PetreVane

// Decoding User Info
 func decodeUserInfo(from data: Data) -> Result<User, Failure> {
        
        let decoder = JSONDecoder()
        let decodedData = try? decoder.decode(DecodedUserInfo.self, from: data)
        guard let userData = decodedData?.person else { print("Errors while decoding UserData: \(Failure.failedDecodingFile.errorDescription)"); return .failure(.failedDecodingFile)}
        let user = User(userID: userData.id, userName: userData.username.content, iconServer: userData.iconserver, iconFarm: userData.iconfarm)
        _ = user.iconURL
        

PetreVane

 
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        
        if segue.identifier == "showDetailedImage" {
            
            guard let indexPath = tableView.indexPathForSelectedRow,
            let destinationVC = segue.destination as? DetailsVC else {return}
            
            let imageToBePassed = UIImage(named: testImages[indexPath.row])

PetreVane

class ErrorManager {

  static func showError(message: String, on viewController: UIViewController?, dismissAction: ((UIAlertAction) -> Void)? = nil) {
    weak var currentViewController = viewController
    DispatchQueue.main.async {
      let alertController = UIAlertController(title: "Error", message: message, preferredStyle: .alert)
      alertController.addAction(UIAlertAction(title: "Dismiss", style: .default, handler: dismissAction))

PetreVane

func fetchImageWithFileManager(image: String) -> UIImage? {

    if let pathUrl = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0] {
        let dirURL = pathUrl.appendingPathComponent(image)
        do {
            let imageData = try Data(contentsOf: dirURL)
            return UIImage(data: imageData)
        } catch {
            print("Failed loading image")