参数传递给调用不带任何参数 - 错误的AppDelegate

Question

的错误是在第二行我已经//

的第一个错误标记是 - extra argument 'error' in call

第二个错误是 - 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

从苹果的文档：

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

含义 - >这个函数的签名没有错误的参数在其结束！在错误的情况下，它会引发异常：

从文档：

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

解决这个最简单的方法：

• ç reate与核心数据一个新的样本项目在Xcode 7 /夫特2
• 复印启用和从样品项目核心数据栈代码粘贴到你的。
  有斯威夫特2
• 几个变化调整的文件名，数据模型的名称和其他自定义设置。

不过 - 因为luk2302暗示 - 阅读文档！