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let sortedNumbers = [3, 1, 5, 6, 2, 4].sorted { $1 > $0 }
print(sortedNumbers) // [1, 2, 3, 4, 5, 6]

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func injected() {
    self.view.backgroundColor = .green
}

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func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
        
    let vc = ViewController()
    let window = UIWindow(frame: UIScreen.main.bounds)
    window.rootViewController = vc
    window.makeKeyAndVisible()
    self.window = window
        
    return true

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// http://nshipster.com/swift-objc-runtime/
extension UIViewController {
    private struct AssociatedKeys {
        static var DescriptiveName = "nsh_DescriptiveName"
    }

    var descriptiveName: String? {
        get {
            return objc_getAssociatedObject(self, &AssociatedKeys.DescriptiveName) as? String
        }

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public protocol SwipeTableViewCellDelegate: class {
    func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath, for orientation: SwipeActionsOrientation) -> [SwipeAction]?
    func tableView(_ tableView: UITableView, editActionsOptionsForRowAt indexPath: IndexPath, for orientation: SwipeActionsOrientation) -> SwipeTableOptions
}

/**
 Default implementation of `SwipeTableViewCellDelegate` methods
 */
public extension SwipeTableViewCellDelegate {
    func tableView(_ tableView: UITableView, editActionsOptionsForRowAt indexPath: IndexPath, for orientation: SwipeActionsOrientation) -> SwipeTableOptions {

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//  .filter() returns a new array of elements that satisfy a predicate declared in our closure
let evenNumbers = [1, 2, 3, 4, 5].filter { $0 % 2 == 0 }

// .map() returns a new array after applying a function to each element
let numbers = [1, 2, 3, 4, 5].map { $0 * 2 }
print(numbers) // [2, 4, 6, 8, 10]

// .flatMap() is like .map(), except it filters out any nil values
let arrayWithNoNils = [1, 2, 3, nil].flatMap { $0 }
print(arrayWithNoNils) // [1, 2, 3]

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import UIKit

class ViewController: UIViewController {
    
    let colors: [UIColor] = [.red, .blue, .green]
    
    lazy var scrollView: UIScrollView = {
        let scrollView = UIScrollView()
        scrollView.delaysContentTouches = false
        scrollView.isPagingEnabled = true

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class Person {
    let name: String
    var age: Int
    
    init(name: String, age: Int) {
        self.name = name
        self.age = age
    }
}

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import UIKit

class MainController: Controller {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        controllerView = MainControllerView(controller: self)
    }
    
    override func setViewHandlers() {

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import UIKit
import SnapKit

class MainControllerView: ControllerView {
    
    // MARK: Views
    
    let label: UILabel = {
        let label = UILabel()
        label.text = "Hello world"