Using Fatal Errors to Add Clarity and Elegance to Swift - 2

using-fatal-errors-to-add-clarity-and-elegance-to-swift-2.swift

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    guard let cell = tableView.dequeueReusableCell(withIdentifier: SettingsTableViewCell.reuseIdentifier, for: indexPath) as? SettingsTableViewCell else { fatalError("Unexpected Index Path") }

    // Configure Cell
    ...

    return cell
}