StructVsClass - SubViewController1

SubViewController1.swift

//
//  SubViewController1.swift
//  ClassInStructLifeCycle
//
//  Created by jay on 2022/01/08.
//

import UIKit

class SubViewController1: UIViewController {
    
    var model: Model = Model()

    override func viewDidLoad() {
        super.viewDidLoad()
        makeView()
    }
    
    @objc func pushSubVC2() {
        var passedModel = model // assign struct into another variable
        passedModel.name = "passedModel" // edit property in struct for copy trigger
        
        print("---------------------------------------")
        print("model is different from passedModel")
        print("model : ", model)
        print("passedModel : ", passedModel)
        print("---------------------------------------\n\n")
        
        let subVC2 = SubViewController2(model: passedModel)
        self.navigationController?.pushViewController(subVC2, animated: true)
    }
                   
    // MARK: - Below is not importatnt!!!!!
    func makeView() {
        self.title = String(describing: Self.self)
        self.view.backgroundColor = .white
        
        makeButton()
    }
    
    func makeButton() {
        let button: UIButton = UIButton(type: .system)
        button.frame = CGRect(x: 0, y: 0, width: 200, height: 100)
        button.setTitleColor(.brown, for: .normal)
        button.titleLabel?.font = UIFont.systemFont(ofSize: 25, weight: .bold)
        button.addTarget(self, action: #selector(pushSubVC2), for: .touchUpInside)
        button.setTitle("Push SubVC-(2)", for: .normal)
        
        self.view.addSubview(button)
        button.center = view.center
    }
}