Question

我一直在表达式列表中得到“期望的表达式”和期望的'）''}'。我如何解决此问题。我试图通过除去方括号来解决它，但仍然无法正常工作。导入UIKit 导入Firebase 进口FirebaseDatabase

  class SearchViewController: UIViewController {
@IBOutlet weak var tableView: UITableView!
var postData = [String]()
var ref: DatabaseReference!
       var databaseHandle: DatabaseHandle?

override func viewDidLoad() {
    super.viewDidLoad()
   //let db = Firestore.firestore()

    // Do any additional setup after loading the view.



    ref = Database.database().reference()
    databaseHandle = ref?.child("users").observe(DataEventType .childAdded, with: { 
 (snapshot) in
        // code to execute when child added under users
        let post = snapshot.value as? String
        if let actualPost = post  {

            self.postData.append(actualPost)

            self.tableView.reloadData()




        )    "expected expression"


    }







/*
// MARK: - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    // Get the new view controller using segue.destination.
    // Pass the selected object to the new view controller.
}
*/

    )}

}

Answer 1

您的支架外壳已关闭。确保正确合上所有支架。

    databaseHandle = ref?.child("users").observe(DataEventType .childAdded, with: {
    (snapshot) in
           // code to execute when child added under users
           let post = snapshot.value as? String
           if let actualPost = post  {

               self.postData.append(actualPost)

               self.tableView.reloadData()




           )    "expected expression"


        }}

在表达式列表中得到'）''}'的期望。我该如何解决

1 个答案: