옵셔널 바인딩 보충

// if let guard let 보충

 

var isTodayLunch: String? = "된장찌개"

 

if let foodName = isTodayLunch{

    print(foodName)

} else {

    print("오늘 점심은 뭐 먹지?")

}

 

 

func isTodayLunch() {

    var foodName: String?

    foodName = "김치찌개"

    guard let name = foodName else {

        print("오늘 점심은 뭐 먹지?")

        return

    }

    print(name)

}

isTodayLunch()