hanawat

let foo = 0
print(foo.dynamicType) // Int

let bar = ""
print(bar.dynamicType) // String

hanawat

import Foundation

let apple: NSMutableArray = ["🍎", "🍎"]
var orange = apple
orange.replaceObjectsInRange(NSMakeRange(0, apple.count), withObjectsFromArray: ["🍊", "🍊"])

print("apple=\(apple)", "orange=\(orange)") // a=[🍊, 🍊] b=[🍊, 🍊]

hanawat

func change<T>(inout target: T, value: T) {
    target = value
}

var name = "Michel"
var age = 25

change(&name, value: "Bob")
change(&age, value: 5)

hanawat

@warn_unused_result(message = "Use the result fuckathon")
func area(height height: Double, width: Double) -> Double {
    return height * width
}

area(height: 2.0, width: 3.0) // Compile Error: Use the result fuckathon

hanawat

func user(name: String, hobby: String) {
    print("My name is \(name). I like \(hobby).")
}

func user(name: String, hobby: String, greeting: String) {
    print("My name is \(name). I like \(hobby). \(greeting).")
}

user("Bob", hobby: "Football")
user("Mary", hobby: "Cook", greeting: "Nice to meet you")

hanawat

struct Date {
    let year, month, day: Int
    
    init(year: Int, month: Int, day: Int) {
        self.year = year
        self.month = month
        self.day = day
    }
}

hanawat

struct Date {
    var year, month, day: Int
    
    init(year: Int, month: Int, day: Int) {
        self.year = year
        self.month = month
        self.day = day
    }
    
    mutating func increment(year year: UInt) {

hanawat

struct Greet {

    let string: String
    static let words = ["Nice", "to", "meet", "see", "you."] // Type property
    static var first = true // Type property

    init(name: String) {

        // Refer type property and method from initializer
        string = Greet.first ? Greet.first(name) : Greet.usual()

hanawat

struct Reference {
    private let _value: Double
    var count = 0

    init(value: Double) { _value = value }

    var value: Double { mutating get {
        count += 1 // Mutating property
        return _value
    }}

hanawat

struct Product {

    let cost: Int
    var profit = 0
    var count = 0

    init(cost: Int, price: Int) {
        self.cost = cost
        self.price = price
    }