[Dica Rápida][iOS] - Organizando suas constantes

Example.swift

import UIKit

fileprivate extension CGFloat {
  static var fontSize: CGFloat = 16
  static var defaultMargin: CGFloat = 24
}

class ViewController: UIViewController {
  @IBOutlet weak var textLabel: UILabel!
  @IBOutlet weak var trailingTextLabel: NSLayoutConstraint!

  override func viewDidLoad() {
    super.viewDidLoad()
    
    textLabel.font = UIFont.system(.fontSize)
    trailingTextLabel.constant = .defaultMargin
    
    view.updateConstraints()
  }
}