Delete核心数据项无法使用参数列表“([AnyObject]?)”调用“deleteObject”

当我试图从项目中删除核心数据项时,我遇到了错误

cannot invoke 'deleteObject' with an argument list of '([AnyObject]?)'

我认为这基本上要求我投射物体,但当我尝试这个时,我得到了同样的错误。我的代码如下:

let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let context = appDelegate.managedObjectContext
var error:NSError? = nil
let request = NSFetchRequest(entityName: projectEntityName)
let pred = NSPredicate(format: "projectName = %@", projectName)
                request.predicate = pred
let objects = context?.executeFetchRequest(request, error: &error)
if let objectList = objects {
   for thisProject in objectList {
      thisProject.deleteObject(objects)
   }
}
appDelegate.saveContext()

有人能帮忙吗?