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iOS Build a Vending Machine App in Swift Displaying Additional Views Temporary Views

Posted by Nila Palmo Ram
Nila Palmo Ram
4,303 Points

Error: Type 'Item' does not conform to protocol 'VendingItem'

protocol VendingItem {
    var price: Double { get }
    var quantity: Int { get set }
}

protocol VendingMachine {
    var selection: [VendingSelection] { get }
    var inventory: [VendingSelection: VendingItem] { get set }
    var amountDeposited: Double { get set }

    init(inventory: [VendingSelection: VendingItem]) //item type
    func vend(selection: VendingSelection, quantity: Int) throws
    func deposit(_amount: Double)
    func item(forSelection selection: VendingSelection) -> VendingItem?
}

struct Item : VendingItem {
    let price: Double
    let quantity: Int
}

1 Answer

pierreilyamukuru
pierreilyamukuru
9,831 Points
pierreilyamukuru
pierreilyamukuru
9,831 Points

In your struct change let quantity to var quantity. This is because quantity is get and set. Solution: struct Item : VendingItem { var quantity: Int let price: Double