UIKit

import UIKit

class ViewController: UIViewController {
    let label = UILabel()
    let button = UIButton(type: .system)
    
    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .white
        
        // Configure label
        label.text = "Hello, UIKit!"
        label.font = .systemFont(ofSize: 24, weight: .bold)
        label.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(label)
        
        // Configure button
        button.setTitle("Tap Me", for: .normal)
        button.addTarget(self, action: #selector(buttonTapped), for: .touchUpInside)
        button.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(button)
        
        // Layout constraints
        NSLayoutConstraint.activate([
            label.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            label.centerYAnchor.constraint(equalTo: view.centerYAnchor, constant: -50),
            
            button.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            button.topAnchor.constraint(equalTo: label.bottomAnchor, constant: 20)
        ])
    }
    
    @objc func buttonTapped() {
        label.text = "Button Tapped!"
    }
}

import UIKit

class TableViewController: UITableViewController {
    let items = ["Item 1", "Item 2", "Item 3", "Item 4", "Item 5"]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
    }
    
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return items.count
    }
    
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
        cell.textLabel?.text = items[indexPath.row]
        return cell
    }
    
    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        tableView.deselectRow(at: indexPath, animated: true)
        print("Selected: \(items[indexPath.row])")
    }
}

import UIKit

func animateView(_ view: UIView) {
    // Fade in animation
    view.alpha = 0
    UIView.animate(withDuration: 0.5) {
        view.alpha = 1
    }
    
    // Spring animation
    UIView.animate(
        withDuration: 0.6,
        delay: 0,
        usingSpringWithDamping: 0.5,
        initialSpringVelocity: 0.5,
        options: [],
        animations: {
            view.transform = CGAffineTransform(scaleX: 1.2, y: 1.2)
        },
        completion: { _ in
            view.transform = .identity
        }
    )
}