Guards

Guards.swift

static func currentUser(inContext context: NSManagedObjectContext) -> User? {
    guard let objectIdURL = UserDefaults.standard.url(forKey: userDefaultKeyUserURL) else { return nil }
    guard let objectId = context.persistentStoreCoordinator?.managedObjectID(forURIRepresentation: objectIdURL) else { return nil }

    var object: User? = nil
    context.performAndWait {
        object = context.object(with: objectId) as? User
    }
    return object
}