Eluss

struct Dog {
    var name: String
}

struct Person {
    var name: String
    var age: Int
    var dog: Dog
}

Eluss

class DetailedPersonViewModel: PersonViewModel {
    var title: String
    var birthday: String
    var dateFormatter = DateFormatter()

    init(person: Person) {
        title = person.firstName + " " + person.lastName

        dateFormatter.dateStyle = .short        
        birthday = dateFormatter.string(from: person.birthday)

Eluss

protocol PersonViewModel {
    var title: String {get}
    var birthday: String {get}
    func doSomeWork()
}

class PersonView: UIView {
    private var titleLabel: UILabel!
    private var birthdayLabel: UILabel!
    private var workButton: UIButton!

Eluss

class PersonView: UIView {

    private var titleLabel: UILabel!
    private var birthdayLabel: UILabel!
    private var workButton: UIButton!

    private var person: Person

    private var dateFormatter = DateFormatter()

Eluss

struct Person {
 var firstName: String
 var lastName: String
 var birthday: Date
}

Eluss

var buttonLeftConstraint: NSLayoutConstraint?

func pureLayout() {
    buttonLeftConstraint = animateButton.autoPinEdge(toSuperviewEdge: .left, withInset: 20)
    animateButton.autoPinEdge(toSuperviewEdge: .top, withInset: 50)
    animateButton.autoSetDimensions(to: CGSize(width: 100, height: 100))
}

func animate() {
    UIView.animate(withDuration: 1) {

Eluss

func pureLayout() {
    scrollView.autoPinEdgesToSuperviewEdges(with: .zero)
    scrollView.autoPinEdge(.bottom, to: .bottom, of: longer, withOffset: 20)

    box.autoPinEdge(toSuperviewEdge: .top, withInset: 150)
    box.autoAlignAxis(toSuperviewAxis: .vertical)
    box.autoSetDimensions(to: CGSize(width: 100, height: 100))

    circle.autoPinEdge(.bottom, to: .bottom, of: self.view, withOffset: -20, relation: .lessThanOrEqual)
    circle.autoPinEdge(.bottom, to: .top, of: longer, withOffset: -20, relation: .lessThanOrEqual)

Eluss

func pureLayout() {
    scrollView.autoPinEdgesToSuperviewEdges(with: .zero)
    scrollView.autoPinEdge(.bottom, to: .bottom, of: longer, withOffset: 20)

    box.autoPinEdge(toSuperviewEdge: .top, withInset: 50)
    box.autoPinEdge(.left, to: .left, of: self.view, withOffset: 20)
    box.autoSetDimensions(to: CGSize(width: 100, height: 100))

    circle.autoPinEdge(.top, to: .top, of: box)
    circle.autoPinEdge(.right, to: .right, of: self.view, withOffset: -20)

Eluss

func pureLayout() {
    box.autoPinEdge(toSuperviewEdge: .top, withInset: 50)
    box.autoPinEdge(toSuperviewEdge: .left, withInset: 20)
    box.autoSetDimensions(to: CGSize(width: 100, height: 100))

    circle.autoPinEdge(.top, to: .top, of: box)
    circle.autoPinEdge(toSuperviewEdge: .right, withInset: 20)
    circle.autoSetDimensions(to: CGSize(width: 100, height: 100))

    longer.autoPinEdge(toSuperviewEdge: .left, withInset: 20)

Eluss

var buttonLeftConstraint: NSLayoutConstraint?

func pureLayout() {
    buttonLeftConstraint = animateButton.autoPinEdge(toSuperviewEdge: .left, withInset: 20)
    animateButton.autoPinEdge(toSuperviewEdge: .top, withInset: 50)
    animateButton.autoSetDimensions(to: CGSize(width: 100, height: 100))
}

func animate() {
    UIView.animate(withDuration: 1) {