parallax.swift

extension ViewController: UITableViewDelegate {
// other implementaion 
func scrollViewDidScroll(_ scrollView: UIScrollView) {
  updateVisibleLabelPositions()
}
private func updateVisibleLabelPositions() {
  guard let cells = tableView.visibleCells as? [TableViewCell] else { return }
  for cell in cells {
    updateLabelPosition(cell)
  }
}
}