設定画面を２分で作るやつ

example.swift

final class Example: UIViewController {

    private var sections = [
        ["設定①", "設定②", "設定③"],
        ["使い方", "有料版"],
        ["バージョン1.0.0"]
    ]

    func onSelectRow(_ indexPath: IndexPath) {
        print(sections[indexPath.section][indexPath.row])
    }
    
    override func loadView() {
        view = SettingTable(
            sections: sections,
            onSelectRow: onSelectRow
        )
    }
}

SettingTable.swift

final class SettingTable: UITableView {
    typealias SelectHandler = (IndexPath) -> ()

    convenience init(sections: [[String]], onSelectRow: @escaping SelectHandler) {
        self.init(frame: .zero, style: .grouped)
        self.sections = sections
        self.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
        self.selectHandler = onSelectRow
        self.delegate = self
        self.dataSource = self
    }
    
    private var sections: [[String]] = []
    private var selectHandler: SelectHandler?
}

extension SettingTable: UITableViewDataSource {
    
    func numberOfSections(in tableView: UITableView) -> Int {
        return sections.count
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
          return sections[section].count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
        cell.textLabel?.text = sections[indexPath.section][indexPath.row]
        cell.selectionStyle = .none
        return cell
    }
}

extension SettingTable: UITableViewDelegate {

    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        selectHandler?(indexPath)
    }
}