Tableview delegate methods not called

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When will the tableView delegate methods not Work?


   If you are using delegate methods like numberofrowsinsection,didselectrowatindexpath, can edit the row and other delegate methods without import table via delegate and data source in the class file.You must have to import like below.Also want to connect the delegate in the Storyboard from table view to view controller.

class ViewController: UIViewController, UITableViewDataSource,UITableViewDelegate
{

 }




Then the delegate methods will work otherwise it will not work.

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