Edudjr

struct AnimalReport {
    func describe(_ animal: Animal) {
        print("Animal is called \(animal.name) and is \(animal.age) years old")
    }
}

struct AnimalSelection {
    let animals: [Animal]
    let animalReport: AnimalReport
    func selectAnimal(_ animal: Animal) {

Edudjr

class AnimalContext {
    var selectedAnimal: Animal?
}

struct AnimalReport {
    let animalContext: AnimalContext
    func describe() {
        guard let animal = animalContext.selectedAnimal else { return }
        print("Animal is called \(animal.name) and is \(animal.age) years old")
    }

Edudjr

struct AnimalReportFactory {
    func makeAnimalReport(for animal: Animal) -> AnimalReport {
        AnimalReport(animal: animal)
    }
}

struct AnimalReport {
    let animal: Animal
    func describe() {
        print("Animal is called \(animal.name) and is \(animal.age) years old")

Edudjr

struct AnimalSelection {
    let animals: [Animal]
    func selectAnimal(_ animal: Animal) {
        let animalReport = Container.resolve(AnimalReport.self, argument: animal)
        animalReport.describe()
    }
}

Edudjr

protocol AnimalReportLocatorProtocol {
    func animalReport(for animal: Animal) -> AnimalReport
}

extension Container: AnimalReportLocatorProtocol {
    func animalReport(for animal: Animal) -> AnimalReport {
        container.resolve(AnimalReport.self, argument: animal)
    }
}

Edudjr

// How connecting constraints was before:
let myView = UIView()
myView.translatesAutoresizingMaskIntoConstraints = false
addSubview(myView)
myView.leadingAnchor.constraint(equalTo: self.leadingAnchor).isActive = true
myView.topAnchor.constraint(equalTo: self.topAnchor).isActive = true
myView.trailingAnchor.constraint(equalTo: self.trailingAnchor).isActive = true
myView.bottomAnchor.constraint(equalTo: self.bottomAnchor).isActive = true

// Now you have different ways of connecting them:

Edudjr

//
//  CreditCardFormatter.swift
//
//  Created by Eduardo Domene Junior on 31.05.21.
//

import Foundation

class CreditCardFormatter: MaskedFormatter {
    init() {

Edudjr

import UIKit
import PlaygroundSupport

class ClientViewController: UIViewController {

    private lazy var content: UIView = {
        quarterNote
    }()

    private let quarterNote: UILabel = {

Edudjr

struct MusicSheetPlotter {

    let quarterNote: UILabel

    func plot(in view: UIView) {
        let stack = UIStackView()
        stack.axis = .horizontal
        stack.distribution = .equalSpacing
        stack.spacing = 5.0
        stack.addArrangedSubview(quarterNote)

Edudjr

// ClientViewController
...
private lazy var content: UIView = {
    let view = UIView()
    view.translatesAutoresizingMaskIntoConstraints = false

    let plotter = MusicSheetPlotter(quarterNote: quarterNote)
    plotter.plot(in: view)

    return view