我試圖追加一個新的Store對象到我的用戶結構中的我的商店數組...我添加了一個變異的func追加到我的結構,但我仍然失去了一些東西,因爲我仍然得到不可變的值類型[字符串]只有變異的成員名爲append
不可變的值類型[存儲]只任命變異成員追加「
錯誤
import Foundation
import UIKit
struct User {
var name: String
var stores: [Store]
mutating func append(newStore: Store) {
stores.append(newStore)
}
}
extension User: Printable {
var description: String {
var printedName = ("\(name as String, stores as [Store])")
return printedName
}
}
struct Store {
var name: String
var data: [[String: String]]
}
extension Store: Printable {
var description: String {
var printedStores = ("\(name as String, data as [[String : String]])")
return printedStores
}
}
@IBAction func done(segue: UIStoryboardSegue) {
let addStoreViewController = segue.sourceViewController as! AddStoreViewController
let store = addStoreViewController.store
if let selectedIndex = addStoreViewController.index {
stores[selectedIndex] = store!
} else {
if let selectedUser = user {
selectedUser.stores.append(store!)
}
}
storeTableView.reloadData()
}
import UIKit
class AddStoreViewController: UIViewController {
var store: Store?
var index: Int?
@IBOutlet weak var storeTextField: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
if let name = store?.name {
storeTextField?.text = name
}
// Do any additional setup after loading the view.
}
// MARK: - Navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let name = storeTextField?.text
if segue.identifier == "addAction" {
if var store = store {
self.store?.name = name!
} else {
store = Store(name: name!, data: [["": ""]])
println(store)
}
}
}
}
Im sorry:selectedUser.stores.append(store!) – GarySabo