參數傳遞給調用不帶任何參數 - 錯誤的AppDelegate

Question

的錯誤是在第二行我已經//

的第一個錯誤標記是 - extra argument 'error' in call

第二個錯誤是 - argument passed to that call takes no arguments

import UIKit 
import CoreData 

@UIApplicationMain 
class AppDelegate: UIResponder, UIApplicationDelegate { 

    var window: UIWindow? 

    lazy var applicationDocumentsDirectory: NSURL = { 
     // The directory the application uses to store the Core Data store file. This code uses a directory named "com.ShreyasPapinwar.Shreyas_Papinwar" in the application's documents Application Support directory. 
     let urls = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask) 
     return urls[urls.count-1] 
    }() 

    lazy var managedObjectModel: NSManagedObjectModel = { 
     // The managed object model for the application. This property is not optional. It is a fatal error for the application not to be able to find and load its model. 
     let modelURL = NSBundle.mainBundle().URLForResource("Shreyas_Papinwar", withExtension: "momd")! 
     return NSManagedObjectModel(contentsOfURL: modelURL)! 
    }() 

    lazy var persistentStoreCoordinator: NSPersistentStoreCoordinator? = { 
     // The persistent store coordinator for the application. This implementation creates and return a coordinator, having added the store for the application to it. This property is optional since there are legitimate error conditions that could cause the creation of the store to fail. 
     // Create the coordinator and store 
     var coordinator: NSPersistentStoreCoordinator? = NSPersistentStoreCoordinator(managedObjectModel: self.managedObjectModel) 
     let url = self.applicationDocumentsDirectory.URLByAppendingPathComponent("Shreyas_Papinwar.sqlite") 
     var error: NSError? = nil 
     var failureReason = "There was an error creating or loading the application's saved data." 

// -------> this line has error - extra argument error in call 
     if coordinator!.addPersistentStoreWithType(NSSQLiteStoreType, configuration: nil, URL: url, options: nil, error: &error) == nil { 
      coordinator = nil 
      // Report any error we got. 
      var dict = [String: AnyObject]() 
      dict[NSLocalizedDescriptionKey] = "Failed to initialize the application's saved data" 
      dict[NSLocalizedFailureReasonErrorKey] = failureReason 
      dict[NSUnderlyingErrorKey] = error 
      error = NSError(domain: "YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict) 
      // Replace this with code to handle the error appropriately. 
      // abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. 
      NSLog("Unresolved error \(error), \(error!.userInfo)") 
      abort() 
     } 

     return coordinator 
    }() 

    lazy var managedObjectContext: NSManagedObjectContext? = { 
     // Returns the managed object context for the application (which is already bound to the persistent store coordinator for the application.) This property is optional since there are legitimate error conditions that could cause the creation of the context to fail. 
     let coordinator = self.persistentStoreCoordinator 
     if coordinator == nil { 
      return nil 
     } 
     var managedObjectContext = NSManagedObjectContext() 
     managedObjectContext.persistentStoreCoordinator = coordinator 
     return managedObjectContext 
    }() 

} 

Answer 1

從蘋果的文檔：

func addPersistentStoreWithType(_ storeType: String, 
        configuration configuration: String?, 
          URL storeURL: NSURL?, 
         options options: [NSObject : AnyObject]?) throws -> NSPersistentStore 

含義 - >這個函數的簽名沒有錯誤的參數在其結束！在錯誤的情況下，它會引發異常：

從文檔：

HANDLING ERRORS IN SWIFT: In Swift, this method returns a nonoptional result and is marked with the throws keyword to indicate that it throws an error in cases of failure.

Answer 2

解決這個最簡單的方法：

• ç reate與核心數據一個新的樣本項目在Xcode 7 /夫特2
• 複印啓用和從樣品項目核心數據棧代碼粘貼到你的。
  有斯威夫特2
• 幾個變化調整的文件名，數據模型的名稱和其他自定義設置。

不過 - 因爲luk2302暗示 - 閱讀文檔！