Nicer register class and dequeue

UICollectionview.swift

extension UICollectionView {
    
    func dequeueCell<T: UICollectionViewCell>(_ indexPath: IndexPath) -> T {
        let reuseIdentifier = T.classForCoder().description()
        guard let cell = dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath) as? T else {
            fatalError("Could not dequeue cell with identifier \(reuseIdentifier)")
        }
        
        return cell
    }
    
    func registerClass<T: UICollectionViewCell>(_ type: T.Type) {
        register(T.classForCoder(), forCellWithReuseIdentifier: T.classForCoder().description())
    }
}