ManWithBear

С UI нужно всегда работать из main потока.

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "Cell")!
    cell.selectionStyle = indexPath.row == 1 ? .default : .none
    return cell
}

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    tableView.deselectRow(at: indexPath, animated: true)
    guard indexPath.row == 1 else { return }
    let vc = UIViewController()
    navigationController?.pushViewController(vc, animated: true)
}

func handleSearch() {
    navigationController?.pushViewController(AlfavitController(with: Magic), animated: true)
}

struct Row {
    let title: String
    let generator: (Parameters) -> UIViewController
}

let section: [Row] = [
    Row(title: "first", generator: { (parameters) -> UIViewController in
        return FirstViewController()
    }),
    Row(title: "second", generator: { (parameters) -> UIViewController in
        return SecondViewController()
    })
]

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    let row = section[indexPath.row]
    let vc = row.generator(Parameters)
    navigationController?.pushViewController(vc, animated: true)
}

for i in (0..<count).reversed() {
    print(i)
}