对成员'tableView（_：numberOfRowsInSection :)'的模糊引用为什么会出现此错误？

Question

Here is my code in which the error appears: The error is in line 3 'if let indexpath...'

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "show Detail" {
        if let indexPath = self.tableView.indexPathForSelectedRow {
            let taakDetail : Taak = taken[(indexPath as NSIndexPath).row]
            let controller = (segue.destination as! UINavigationController).topViewController as! DetailsViewController
            controller.selectedTaak = taakDetail
        }
    }

I can't find out what is ambiguous about this. The code to which it refers to is:

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return taken.count
}

Answer 1

It's not finding tableView , and is therefore getting thrown off, assuming you somehow meant to reference this method (which you don't, obviously).

Note, your outlet is tableview , not tableView . Properties are case sensitive.

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "show Detail" {
        if let indexPath = self.tableview.indexPathForSelectedRow {
            let taakDetail : Taak = taken[indexPath.row]
            let controller = (segue.destination as! UINavigationController).topViewController as! DetailsViewController
            controller.selectedTaak = taakDetail
        }
    }
}