UITableview Reusable Delegate Datasource

GenericTableSource

import UIKit

class GenericTableSource : NSObject {

    private var cellID: String = ""

    private (set) var data : [Any]  = []

    func registerCell(identifier: String, data : [String], tableView: UITableView) {
        
        if identifier.isEmpty {
            fatalError("Tableview cell identifier can't be empty or nil")
        } else {
            self.cellID = identifier
            self.data = data
            tableView.register(UITableViewCell.self, forCellReuseIdentifier: self.cellID)
        }
    }
    
    func cell(indexPath : IndexPath, tableview : UITableView)-> UITableViewCell {
        let cell  = tableview.dequeueReusableCell(withIdentifier: self.cellID)
        cell?.textLabel?.text = self.data[indexPath.row] as? String
        return cell!
    }
    
}

//MARK: Tableview Delegate and DataSource
extension GenericTableSource : UITableViewDelegate, UITableViewDataSource {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return self.data.count
    }
    
    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
            return self.cell(indexPath: indexPath, tableview: tableView)
    }
}

ViewController

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var tableListView : UITableView?
    @IBOutlet weak var tableListFruits : UITableView?

    var genericListTableSource  = GenericTableSource()
    var genericFruitsTableSource  = GenericTableSource()

    override func viewDidLoad() {
        super.viewDidLoad()

        // list tabeview
        let listItems = ["Once","Two","Three","Four"]
        genericListTableSource.registerCell(identifier: "cellList", data: listItems, tableView: self.tableListView!)
        self.tableListView?.dataSource = genericListTableSource
        self.tableListView?.delegate = genericListTableSource
       
        // fruits tableView
        let fruitItems = ["Apple","Mango","Banana"]
        genericFruitsTableSource.registerCell(identifier: "cellList", data: fruitItems, tableView: self.tableListFruits!)
        self.tableListFruits?.dataSource = genericFruitsTableSource
        self.tableListFruits?.delegate = genericFruitsTableSource
        
        DispatchQueue.main.async {
            self.tableListFruits?.reloadData()
            self.tableListView?.reloadData()
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

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