Reuse tablecell in static table view - iOS - Swift

Question

I'm new and learning swift

I want to use static cells in my table view. I have all cells look similar so I thought of using xib for tablecell and use that in my static table view.

Problem I'm facing currently is, when I try to access label that i have in xib is throwing me error in method: ConfigureCell in below code. Thread 1: Fatal error: Unexpectedly found nil while implicitly unwrapping an Optional value Why is it saying im unwrapping optional when I dont have one

Not sure what needs to be done here/ Please advice.

below is my code:

class NewTableViewController: UITableViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

       self.tableView.register(ReusableTableViewCell.self, forCellReuseIdentifier:"custom")
    }

    // MARK: - Table view data source

    override func numberOfSections(in tableView: UITableView) -> Int {
        // #warning Incomplete implementation, return the number of sections
        return 1
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete implementation, return the number of rows
        return 4
    }


    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        guard let cell = tableView.dequeueReusableCell(withIdentifier: "custom", for: indexPath) as? ReusableTableViewCell else {
            return UITableViewCell()
        }
        if indexPath.row == 0 {
            cell.configureCell(title: "Name", detail: "hello")
        }
        if indexPath.row == 2 {
            cell.configureCell(title: "Age", detail: "23")
        }
        if indexPath.row == 3 {
            cell.configureCell(title: "Dept", detail: "HR")
        }
        return cell
    }
}

class ReusableTableViewCell: UITableViewCell {

@IBOutlet weak var leftLabel: UILabel!
@IBOutlet weak var rightLabel: UILabel!

override func awakeFromNib() {
    super.awakeFromNib()
    // Initialization code
}

override func setSelected(_ selected: Bool, animated: Bool) {
    super.setSelected(selected, animated: animated)

    // Configure the view for the selected state
}

func configureCell(title: String, detail: String) {

    leftLabel.text = title //Error Here: Thread 1: Fatal error: Unexpectedly found nil while implicitly unwrapping an Optional value

    rightLabel.text = detail

}

}

Answer 1

Found solution to this. Problem is with line self.tableView.register(ReusableTableViewCell.self, forCellReuseIdentifier:"custom")

Replacing that with tableView.register(UINib(nibName: "ReusableTableViewCell", bundle: nil), forCellReuseIdentifier: "custom") solved the issue

Thanks