UITableView+Extension.swift

 extension UITableView {
    
    func hideEmptyCells()  {
        tableFooterView = UIView()
    }
    /// Layout an auto layout header view 
    func setAndLayoutTableHeaderView(_ header: UIView) {
        header.setNeedsLayout()
        header.layoutIfNeeded()
        header.frame.size = header.systemLayoutSizeFitting(UILayoutFittingCompressedSize)
        tableHeaderView = header
    }
}