ios - swift 4 : Value of tuple type '(assignment: Assignment, tasks: [Task])' has no member 'subscript'

Question

我有一个包含多个部分和行的 tableView。我正在尝试将数据传递给下一个 VC，但我得到了

Value of tuple type '(assignment: Assignment, tasks: [Task])' has no member 'subscript'

这是 didSelectRowAt 方法:

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        print("Selected Row: ", indexPath.section, indexPath.row)

        let storyboard = UIStoryboard(name: "Main", bundle: Bundle.main)
        let destVC = storyboard.instantiateViewController(withIdentifier: "TaskCardVC") as! TaskCardVC

        destVC.textToDisplay = self.assignmentsToLoad[indexPath.section][indexPath.row].description

        navigationController?.pushViewController(destVC, animated: true)
    }

这是TaskCardVC

import UIKit

class TaskCardVC: UIViewController {
    @IBOutlet weak var textLabel: UILabel!


    var textToDisplay: String!

    override func viewDidLoad() {
        super.viewDidLoad()

        textLabel.text = textToDisplay
    }

}

Answer 1

代替

self.assignmentsToLoad[indexPath.section][indexPath.row].description

使用

self.assignmentsToLoad[indexPath.section].tasks[indexPath.row].description

因为 assignmentsToLoad 是一个元组数组而不是数组的数组所以

如果你像这样声明 var，你的旧代码就适合

assignmentsToLoad = [[Task]]()