SamStone92

final class ProcessorUpgrade : MacBookDecorator {
    
    override var cost: Double {
        get {
            return mbInstance.cost + 499
        }
    }
    
    override var description: String {
        get {

SamStone92

class MacBookDecorator : MacBook{

    var cost: Double {
        get {
            return mbInstance.cost
        }
    }
    
    var description: String {
        get {

SamStone92

class MacBookAir : MacBook {
    
    var cost: Double {
        get {
            return 999
        }
    }
    
    var description: String {
        get {

SamStone92

protocol MacBook {
    
    var cost : Double { get }
    
    var description : String { get }
    
}

SamStone92

print("Choose your starter Pokemon (B = Bulbasaur / C = Charmander / S = Squirtle)")

let response = readLine(strippingNewline: true)

let pokemon = PokemonFactory().getStarterPokemong(pokemonString: response!)

if pokemon != nil{
    print("You have picked \((pokemon?.name)!). It is a \((pokemon?.type)!) Pokèmon")
} else {
    print("Please pick a suitable Pokèmon")

SamStone92

class PokemonFactory{
    
    func getStarterPokemong(pokemonString : String) -> Pokemon? {
        switch pokemonString {
        case "B":
            return Bulbasaur()
        case "C":
            return Charmander()
        case "S":
            return Squirtle()

SamStone92

class Bulbasaur : Pokemon{
    
    override init() {
        super.init()
        self.name = "Bulbasaur"
        self.type = "Grass"
    }
    
}

SamStone92

class Pokemon {
    
    private var _name = String()
    var name : String{
        get{
            return _name
        }
        set{
            _name = newValue
        }

SamStone92

let employee = Employee()
let boss = Boss()
let ceo = CEO()

employee.nextManagementLevel = boss
boss.nextManagementLevel = ceo

let expenditure = Expenditure(amount: 5)
employee.shouldApproveExpenditure(expenditure: expenditure)

SamStone92

let expenditure = Expenditure(amount: 5)
employee.shouldApproveExpenditure(expenditure: expenditure)

expenditure.amount = 500
employee.shouldApproveExpenditure(expenditure: expenditure)

expenditure.amount = 5000
employee.shouldApproveExpenditure(expenditure: expenditure)

expenditure.amount = 50000