Easy to use Cell reuse in TableView and CollectionView. Add this file to your Swift project to get going!

Reusable.swift

//
//  Reusable.swift
//  B-NYS GCV
//
//  Created by Matthias Nys on 12/01/2017.
//  Copyright © 2017 B-NYS. All rights reserved.
//  https://gist.github.com/matthiasnys/96ae8eec52d3b63ed8c307b43defb116
//

import UIKit

protocol ReusableView: class {
    static var defaultReuseIdentifier: String { get }
}

extension ReusableView where Self: UIView {
    static var defaultReuseIdentifier: String {
        return NSStringFromClass(self)
    }
}

extension UICollectionViewCell: ReusableView { }
extension UICollectionView {
    
    func register<T: UICollectionViewCell>(class: T.Type) where T: ReusableView {
        register(T.self, forCellWithReuseIdentifier: T.defaultReuseIdentifier)
    }
    
    func dequeueReusableCell<T: UICollectionViewCell >(forIndexPath indexPath: IndexPath) -> T where T: ReusableView {
        guard let cell = dequeueReusableCell(withReuseIdentifier: T.defaultReuseIdentifier, for: indexPath) as? T else {
            fatalError("Could not dequeue cell with identifier: \(T.defaultReuseIdentifier)")
        }
        return cell
    }
}

extension UITableViewCell: ReusableView { }
extension UITableView {
    func test() {
        self.register(class: UITableViewCell.self)
    }
    
    func register<T: UITableViewCell>(class: T.Type) where T: ReusableView {
        register(T.self, forCellReuseIdentifier: T.defaultReuseIdentifier)
    }
    
    func dequeueReusableCell<T: UITableViewCell >(forIndexPath indexPath: IndexPath) -> T where T: ReusableView {
        guard  let cell = dequeueReusableCell(withIdentifier: T.defaultReuseIdentifier, for: indexPath) as? T else {
            fatalError("Could not dequeue cell with identifier: \(T.defaultReuseIdentifier)")
        }
        return cell
    }
}