Classes, Properties, and Methods

import UIKit

class Movie {
	let title: String
	let director: String
	let releaseYear: Int

	init(title: String, director: String, releaseYear: Int){
		self.title = title
		self.director = director
		self.releaseYear = releaseYear
	}
}

class MovieArchive {
	var movies:[Movie]

	func filterByYear(year:Int) -> [Movie]{
		var filteredArray = [Movie]()
		for movie in self.movies {
			if movie.releaseYear == year {
				filteredArray.append(movie)
			}
		}
		return filteredArray
	}

	init(movies:[Movie]){
		self.movies = movies
	}
}

import UIKit

class ViewController: UIViewController {

	var count = 0
	var label:UILabel!

	override func viewDidLoad(){
		super.viewDidLoad()

		// Label
		var label = UILabel()
		label.frame = CGRectMake(150, 150, 60, 60)
		label.text = "0"
		self.view.addSubview(label)
		self.label = label
		// Button
		var button = UIButton()
		button.addTarget(self, action: "incrementCount", forControlEvents: UIControlEvents.TouchUpInside)
		self.view.addSubview(button)
		button.frame = CGRectMake(150, 250, 60, 60)
		button.setTitle("Click", forState: .Normal)
		button.setTitleColor(UIColor.blueColor(), forState:.Normal)
	}

	@IBAction func incrementCount(){
		self.count++
		self.label.text = "\(self.count)"
	}
}

Access Control
Level, Class, App/Framework, Work
public: Y Y Y
internal: Y Y N
private Y N N

class Movie {
	let title: String
	let director: String
	let releaseYear: Int

	init(title: String, director: String, releaseYear: Int){
		self.title = title
		self.director = director
		self.releaseYear = releaseYear
	}
}

var thursdayNightMovie = Movie(title: "Point Break", director: "Kathryn Bigelow", releaseYear: 1991)
thursdayNightMovie.title