jesro

var jes: Int?
jes = 10
if jes != nil{
    let jesro  = jes!
    print(jesro)
}

if let jess = jes {
    print(jess)
}


var anotherWord = "good"
print("word : \(anotherWord)")

var arrWrite = ["one", "two", ]
arrWrite[0] = "changedOne"
let writeDown = arrWrite[0] 
print("Array is \(writeDown)")

var arr : [String] = []
arr.append("look")
arr.append("look")
arr.removeLast()
print(arr)

func jesro(number: Int){
    print(number)
}

jesro(number: 20)

func jesro() -> String{
    return "good"
}

print(jesro())

func jesro(_ number: Int){
    print(number)
}

jesro(30)

func jesro(getg number: Int){
    print(number)
}

jesro(getg: 550)

enum Jesro{
    case jes,book,music
}

var goods: Jesro = .book
print(goods)

enum Jesr: String{
    case jes = "wall"
    case book = "achieve"
    case music = "play"
}

var goodshow: Jesr = .book
print("\(goodshow) \(goodshow.rawValue)")

enum Jess{
    case jes(String)
    case book(Int)
    case music(Bool)
}

var fell: Jess = .jes("man")
print("\(fell)")
switch(fell){
    case .jes(let genre):
        print("\(genre)")
    case .book(let bpm):
        print("\(bpm)")
    case .music(let mus):
        print("\(mus)")
}

struct Movie {
    var title: String
    var releaseYear: Int
    var director: String
    
    func movieBoys() -> String{
        return "\(title) is created by \(director)"
    }
}

var name = Movie(title: "Rocks",releaseYear: 2019,director: "John Smith")
print(name.releaseYear)
print(name.movieBoys())

//struct value types
//class reference types
//dictionary unordered collection
var dictionary = ["keyone":"username","keytwo":"password","keythree":"lock"]
dictionary["keyon"] = "users"
if let valu = dictionary["keyon"]{
    print(valu)
}else{
    print("Not Found (404)")
}

var dict: [Int: String]