> > > class UITableView { > ... > private func addRow(at indexPath: NSIndexPath) { > ... > cell.size.height = delegate?.tableView(self, > heightForRowAtIndexPath: indexPath) ?? rowHeight > ... > } > ... >
You need not duplicate the default logic: private class DefaultDelegate: NSObject, UITableViewDelegate { } private let defaultDelegate = DefaultDelegate() public class UITableView { private func addRow(at indexPath: NSIndexPath) { ... cell.size.height = (delegate ?? defaultDelegate).tableView(self, heightForRowAtIndexPath: indexPath) ... } }
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