How to remove a swift 2 array element is not at index - arrays

Question

How to remove a swift 2 array element is not at index?
protocol Food { //Еда
var name: String {get}
func taste() -> String
var pr: Int {get}
}
protocol Storable: Food {
var expired: Bool {get}
var daysToExpire: Int {get}
}
class Apple: Food { //Яблоко
var name = "Яблоко"
func taste() -> String {
return "Сладкое"
}
var pr = 0
}
class Grapes: Storable { //виноград
var name = "Виноград"
func taste() -> String {
return "Кислый"
}
var pr = 0
var expired = false
var daysToExpire = 5
}
class Banana: Storable { //Банан
var name = "Банан"
func taste() -> String {
return "Сладкий"
}
var pr = 0
var expired = false
var daysToExpire = 9
}
class Potato: Food { //картошка
var name = "Картошк"
func taste() -> String {
return "Сладкая"
}
var pr = 1
}
class Bow: Food { //Лук
var name = "Лук"
func taste() -> String {
return "Горький"
}
var pr = 1
}
class Carrot: Food { //морковь
var name = "Морковь"
func taste() -> String {
return "Сладкая"
}
var pr = 1
}
var apple = Apple()
var grapers = Grapes()
var banana = Banana()
var potato = Potato()
var bow = Bow()
var carrot = Carrot()
var basket: [Food] = [apple, grapers, banana, potato, bow, carrot]
func bite(oneBite: [Food]) {
for bites in basket {
print("Кусаем \(bites.name), ооо на вкус \(bites.taste())")
}
}
bite(basket)
var fridge = [Storable]()//пустой массив типа Storable холодильник
for prod in basket {
if let storableProduct = prod as? Storable where storableProduct.expired == false {
fridge.append(storableProduct)
}
}
var trash = [Storable]() //пустой массив типа Storable мусорка
for i in fridge {
if i.daysToExpire > 6 {
fridge.removeAtIndex(i)
}
}

Answer 1

First of all please post the code rather than screenshots. Nobody who is willing to help is also willing to retype the code for testing.
The index variable i in the loop is a Storable object, not an Int index, that's exactly what the error message says.
Using enumerate you get the index and the object
for (i, storable) in fridge.enumerate {
if storable.days ... {
fridge.removeAtIndex(i)
}
}
But be aware that you certainly will run into the next problem if you are removing items from the object you are enumerating just now.