Generic TableView Controller

GenericTableViewController.swift

//  GenericTableViewController.swift
//  Generics
//
//  Created by Yash Thaker on 01/07/18.
//  Copyright © 2018 YashThaker. All rights reserved.

import UIKit

/*
// <---------- HERE IS HOW TO USE. ---------->
struct User {
    let name, email: String
}

class UserCell: GenericCell<User> {
    
    override var item: User! {
        didSet {
            textLabel?.text = "\(item.name):-  \(item.email)"
        }
    }
}

class ViewController: GenericTableViewController<UserCell, User> {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        items = [User(name: "Yash", email: "[email protected]"),
            User(name: "Sunny", email: "[email protected]")]
    }
} 
*/

class GenericTableViewController<T: GenericCell<U>, U>: UITableViewController {
    
    var items = [U]()
    
    let cellId = "cellId"

    override func viewDidLoad() {
        super.viewDidLoad()
        tableView.register(T.self, forCellReuseIdentifier: cellId)
    }
    
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return items.count
    }
    
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: cellId) as! T
        cell.item = items[indexPath.row]
        return cell
    }

}

class GenericCell<U>: UITableViewCell {
    var item: U!
}