Simple way for creating self sizing UITableViews

SelfsizingTableView.swift

class SelfsizingTableView: UITableView {

    override var intrinsicContentSize: CGSize {
        return CGSize(width: frame.width,
                      height: contentSize.height + contentInset.top + contentInset.bottom)
    }
    
    override var contentSize: CGSize {
        didSet {
            if oldValue != contentSize {
                invalidateIntrinsicContentSize()
            }
        }
    }
}