Swift - UITableView inside UIViewController, UITableView functions are not called

You have to set your view controller as a table view delegate/datasource:

add to the end of the viewDidLoad:

authorArticlesTableView.delegate = self
authorArticlesTableView.dataSource = self

Set table delegate and dataSource :

override func viewDidLoad() {
    super.viewDidLoad()

    tableView.delegate = self
    tableView.dataSource = self
}