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iOS Build a Vending Machine App in Swift Using the Vending Machine Testing Out the Vending Machine

jordon beyond
jordon beyond
2,158 Points
Posted by jordon beyond
jordon beyond
2,158 Points

Quantity problem in Vending Machine code

unresolved identifier: Quantity

jordon beyond
jordon beyond
2,158 Points
jordon beyond
jordon beyond
2,158 Points 
 @IBAction func purchase() {
        if let currentSelection = currentSelection{
            do {
                try vendingMachine.vend(selection: currentSelection, quantity: quantity )
            }catch{
                //FIXME: ERROR HANDLING CODE
            }
        }else {
            //FIXME: ALERT USER TO NO SELECTION
        }
    }

Use of unresolved identifier 'quantity' Do you mean QuantityLabel? I checked on the VendingMachine.swift file and changed the func vend() accordingly, any one else have the same problem ?

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

    init(inventory: [VendingSelection: VendingItem])

    func vend (selection: VendingSelection, quantity: Int) throws
    func deposit (_ amount: Double)
}
Patrick Duhamel
Patrick Duhamel
5,786 Points
Patrick Duhamel
Patrick Duhamel
5,786 Points

In your ViewController.swift, did your declare a variable named quantity as shown at 0:52 of the video?

2 Answers

Gavin Hobbs
Gavin Hobbs
5,205 Points
Gavin Hobbs
Gavin Hobbs
5,205 Points

Hey jordon beyond I'm running into the same bug. Patrick Duhamel what video did you mean when you said...

did your declare a variable named quantity as shown at 0:52 of the video?

Gavin Hobbs
Gavin Hobbs
5,205 Points
Gavin Hobbs
Gavin Hobbs
5,205 Points

I asked the question with all my code attached and I got an answer that fixed my bug! Here's a link to that forum post... My bug was on line 24 in ViewController.swift. I needed to declare:

var quantity = 1