How to get indexPath.row of tableView which is currently being displayed?

Question

I have a tableView with many values.

I want to get the first indexPath.row value of the table which is being displayed currently.

How can I do

Answer 1

Get exact index number at center currently being displayed:

 let middleIndex = ((tableView.indexPathsForVisibleRows?.first?.row)! + (tableView.indexPathsForVisibleRows?.last?.row)!)/2

Example:

func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {

  let middleIndex = ((tableView.indexPathsForVisibleRows?.first?.row)! + (tableView.indexPathsForVisibleRows?.last?.row)!)/2
  print(middleIndex)

}