在表达式列表中得到预期的 ')' '}'.我该如何解决这个问题 [英] getting expected ')' '}' in expression list. how do i solve this

问题描述

我一直在表达式列表中得到一个预期的表达式"和预期的')''}' 我如何解决这个问题.我试图通过删除括号来解决它，但它仍然无法正常工作.导入 UIKit导入 Firebase导入 Firebase 数据库

i keep getting an "expected expression" and expected ')' '}' in expression list how do i solve this.i have tried to solve it by removing the brackets but it still wont work. import UIKit import Firebase import 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.
}
*/

    )}

}

推荐答案

您的括号外壳已关闭.确保正确关闭所有括号.

Your brackets enclosures are off. Make sure you are properly closing all brackets.

    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"


        }}

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