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我想刪除核心數據表(DatiGame)中的所有行,由4個字段組成。 foto_bottone0 foto_bottone1 foto_master vinto 和表格沒有其他關係。IOS Swift - deletedObjects NSManagedObject
但操作DeletedObjects返回以下錯誤:
'(NSManagedObject) - > $ T4' 不等同於 '的NSSet'
import UIKit
import Foundation
import CoreData
class FirstViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
// 1
var appDell:AppDelegate = UIApplication.sharedApplication().delegate as AppDelegate
var context:NSManagedObjectContext = appDell.managedObjectContext!
// 2
var request = NSFetchRequest(entityName: "DatiGame")
request.returnsObjectsAsFaults = false
println("pre fetch ")
// 3
var results = context.executeFetchRequest(request, error: nil)
if (results?.count > 0) {
for result: AnyObject in results! {
--> ERROR deleteObjects <--
context.deletedObjects(result as NSManagedObject) // ERROR
'(NSManagedObject) -> $ T4' is not identical to 'NSSet'"
context.save(nil)
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
請,有人可以幫我嗎?其他問題: 您可以刪除表中的所有行而不循環?謝謝謝謝