UIView and playgounds

gistfile1.swift

// Playground - noun: a place where people can play

import UIKit
import XCPlayground

var str = "Hello, playground"

class Person {
    
    var age:Int
    var name:String
    var gender:String
    var profession:String
    var location:String
    var partner:Person?
    
    init(name:String, gender:String, profession:String, location:String, age:Int) {
        self.name = name
        self.gender = gender
        self.profession = profession
        self.location = location
        self.age = age
    }
    func createRelationship(partner:Person) {
        self.partner = partner
    }
    func displayRelationshipMessage() {
        if partner != nil {
            println("\(name) is in a relationship with \(partner!.name)")
        } else {
            
            println("\(name) is single")
        }
    }
}

var peter = Person(name: "Peter", gender: "Male", profession: "Software Developer", location: "New York City", age:34)
var amy = Person(name: "Amy", gender: "Female", profession: "Professor", location: "San Francisco", age:26)


peter.createRelationship(amy)

peter.displayRelationshipMessage()
amy.displayRelationshipMessage()


class Shape : UIView {
    var color:UIColor
    init(color:UIColor) {
        self.color = color
        super.init(frame: CGRectZero)
        self.backgroundColor = color
    }
    required init(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    func getArea() -> Double {
        return 0
    }
}

class Circle: Shape {
    var radius:Int
    init(radius:Int, color:UIColor) {
        self.radius = radius        // Circle sets is own radius
        super.init(color: color)    // But it asks the superclass to set the color, since Shape already knows how to do that
        self.frame.size = CGSize(width: radius * 2, height: radius * 2)
        self.layer.cornerRadius = CGFloat(radius)
    }
    required init(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}

class Square: Shape {
    var width:Int
    init(width:Int, color:UIColor) {
        self.width = width
        super.init(color: color)
        self.frame.size = CGSize(width: width, height: width)
    }

    required init(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    override func getArea() -> Double {
    
        return (Double(width * width))
    }
}

var circle = Circle(radius: 50, color: UIColor.blueColor())
var square = Square(width: 100, color: UIColor.redColor())
square.getArea()

let view = UIView(frame: CGRect(x: 0, y: 0, width: 320, height: 300))

XCPShowView("Title", view)

square.center = CGPoint(x: 50, y: 50)
view.addSubview(square)
circle.center = CGPoint(x: 140, y: 140)
view.addSubview(circle)