구문을 swift 3.0으로 변환 NSFetchedResultsController

Question

어떻게 NSFetchedResultsController를 3.0으로 신속하게 변환 할 수 있습니까?

lazy var fetchedResultsControler: NSFetchedResultsController = { 
    let fetchRequest = NSFetchRequest(entityName: "Mesages") 
    fetchRequest.sortDescriptors = [NSSortDescriptor(key: "timestamp", ascending: true)] 
    fetchRequest.predicate = NSPredicate(format: "user.id = %@", self.friend!.id!) 
    let moc = (UIApplication.sharedApplication().delegate as! AppDelegate).managedObjectContext 
    let frc = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: moc, sectionNameKeyPath: nil, cacheName: nil) 
    frc.delegate = self 
    return frc 
}() 

가 자동으로 변환 :

lazy var fetchedResultsControler: NSFetchedResultsController = {() -> <<error type>> in 
    let fetchRequest = NSFetchRequest(entityName: "Mesages") 
    fetchRequest.sortDescriptors = [NSSortDescriptor(key: "timestamp", ascending: true)] 
    fetchRequest.predicate = NSPredicate(format: "user.id = %@", self.friend!.id!) 
    let moc = (UIApplication.shared.delegate as! AppDelegate).managedObjectContext 
    let frc = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: moc, sectionNameKeyPath: nil, cacheName: nil) 
    frc.delegate = self 
    return frc 
}() 

하지만 그것은 작동하지 않습니다, 임의의 장소에서

Answer 1

그것은에 필요한 세미 콜론을 넣어 나에게 묻는 데요

나는이 있었다 괄호 안에 NSFetchRequestResult을 설정하십시오 <>. SWIFT 3.0

:

lazy var fetchedResultsControler: NSFetchedResultsController<NSFetchRequestResult> = { 
    let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: "Mesages") 
    fetchRequest.sortDescriptors = [NSSortDescriptor(key: "timestamp", ascending: true)] 
    fetchRequest.predicate = NSPredicate(format: "user.id = %@", self.friend!.id!) 
    let moc = (UIApplication.shared.delegate as! AppDelegate).managedObjectContext 
    let frc = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: moc, sectionNameKeyPath: nil, cacheName: nil) 
    frc.delegate = self 
    return frc 
}()