hatena_uitalbeview_register

UITableView+Extension.swift

extension UITableView {
    func register<T: UITableViewCell>(_: T.Type) where T: Reusable {
        register(T.self, forCellReuseIdentifier: T.reuseIdentifier)
    }

    func dequeueReusableCell<T: UITableViewCell>(for indexPath: IndexPath) -> T where T: Reusable {
        guard let cell = dequeueReusableCell(withIdentifier: T.reuseIdentifier, for: indexPath) as? T else {
            fatalError("Could not dequeue cell with identifier: \(T.reuseIdentifier)")
        }
        return cell
    }

    func registerReusableHeaderFooterView<T: UITableViewHeaderFooterView>(_: T.Type) where T: Reusable {
        register(T.self, forHeaderFooterViewReuseIdentifier: T.reuseIdentifier)
    }

    func dequeueReusableHeaderFooterView<T: UITableViewHeaderFooterView>() -> T where T: Reusable {
        guard let view = dequeueReusableHeaderFooterView(withIdentifier: T.reuseIdentifier) as? T else {
            fatalError("Could not dequeue headerfooter view with identifier: \(T.reuseIdentifier)")
        }
        return view
    }
}