thanhluu

enum Coin: Double {
    case Penny = 0.01
    case Nickel = 0.05
    case Dime = 0.1
    case Quarter = 0.25
}

let wallet: [Coin] = [.Penny, .Nickel, .Dime, .Dime, .Quarter, .Quarter, .Quarter]

var count: Int = 0

thanhluu

protocol FullyNameable {
    var fullName: String { get }
}

struct User: FullyNameable {
    var fullName: String
}

let user = User(fullName: "John Smith")

thanhluu

protocol Printable {
    func description() -> String
}

protocol PrettyPrintable: Printable {
    func prettyDescription() -> String
}

struct User: PrettyPrintable {
    let name: String

thanhluu

import UIKit

struct Point {
    let x: Int
    let y: Int
}

struct Map {
    static let origin: Point = Point(x: 0, y: 0)

thanhluu

import UIKit

//struct Rectangle {
//    var length: Int
//    var width: Int
//    
//    var area: Int {
//        return length * width
//    }
//}

thanhluu

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

import UIKit

enum ReadingMode {
    case Day
    case Evening
    case Night
    
    var statusBarStyle: UIStatusBarStyle {

thanhluu

import UIKit

class ReadItLaterClient {
    lazy var session: NSURLSession = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration())
    /* Do the rest of the work */
}

thanhluu

func printString(aString: String) {
    print("Printing the string passed in: \(aString)")
}

printString("Hi, my name is Thanh")
let someFunction: String -> Void = printString

someFunction("Hi, look at me!")

/*****************/

thanhluu

func doubler(i: Int) -> Int {
    return i * 2
}

let doubleFunction = doubler

doubleFunction(2)

let numbers = [1,2,3,4,5]
let doubleNumbers = numbers.map(doubleFunction)

thanhluu

let values = [1,2,3,4,5]

var newArray = [Int]()
for number in values {
    newArray.append(number * 2)
}

let tripledValues = values.map { $0 * 3 }

// Map