designated and convenience initializers in action (important)

// designated and convenience initializers in action
class Food{
    var name: String
    
    init(name: String){
        self.name = name
    }
    convenience init(){
        self.init(name: "chapati")
    }
}

// designated initializers
var myFood = Food(name: "rice")
print("my favorite food is: ",myFood.name)

class Ingredients: Food{
    var quantity: Int
    init(name: String, quantity: Int){
        self.quantity = quantity
        super.init(name: name)
    }
    override convenience init(name: String) {
        self.init(name: name, quantity: 4)
    }
}

let onlyItem = Ingredients()
let oneRice = Ingredients(name: "justFood")
let tenPoundGrape = Ingredients(name: "Grape", quantity: 10)

print("now i want to eat \(tenPoundGrape.quantity) pounds \(tenPoundGrape.name)")



class PurchaseList: Ingredients{
    var purchase = false
    var description: String{
        var answer = "\(quantity) * \(name): "
        answer += purchase ? "yes": "no"
        return answer
    }
}

var breakfast = [
            PurchaseList(),
            PurchaseList(name: "banana"),
            PurchaseList(name: "naseberry", quantity: 5)
]
breakfast[0].name = "juice"
breakfast[0].purchase = true
breakfast[2].purchase = true
for info in breakfast{
     print(info.description) 
}