UITableView selection programmatically

CustomUITableviewSelection.swift

// MARK: UITableViewCell class
class TableViewCell: UITableViewCell {
    override var isSelected: Bool {
        didSet {
            // Configure cell selection
        }
    }
}

// MARK; UIViewController class
class ViewController: UIViewController {
    private let viewModel = ViewModel()

    // ...
}

extension ViewController: UITableViewDelegate {
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        viewModel.didSelect(indexPath: indexPath)
    }

    func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
        viewModel.didDeselect(indexPath: indexPath)
    }

    func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
        cell.isSelected = viewModel.isSelected(indexPath: indexPath)
    }
}

// MARK: ViewModel class
class ViewModel {
    private var selectedHash = [IndexPath: Bool]()
    func isSelected(indexPath: IndexPath) -> Bool {
        return selectedHash[indexPath] ?? false
    }

    func didSelect(indexPath: IndexPath) {
        selectedHash[indexPath] = true
    }

    func didDeselect(indexPath: IndexPath) {
        selectedHash[indexPath] = false
    }
}