Safe dequeuing of collection and table view cells

SafeDeque

protocol CellWithIdentifier:class {
    associatedtype T = Self
    static var resuseIdentifier: String { get }
}

extension UICollectionViewCell:CellWithIdentifier { }
extension UITableViewCell:CellWithIdentifier { }

extension CellWithIdentifier {
    static var resuseIdentifier: String { return String(self) }
}

extension UICollectionView {
    func deque<T: CellWithIdentifier where T.T == UICollectionViewCell>(cell type: T.Type, at indexPath: NSIndexPath) -> T {
        return dequeueReusableCellWithReuseIdentifier(type.resuseIdentifier, forIndexPath: indexPath) as! T
    }
}

extension UITableView {
    func deque<T: CellWithIdentifier where T.T == UITableViewCell>(cell type: T.Type, at indexPath: NSIndexPath) -> T {
        return dequeueReusableCellWithIdentifier(type.resuseIdentifier, forIndexPath: indexPath) as! T
    }
}


func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        let cell = collectionView.deque(cell: NSObject.self, at: indexPath) // Compiler error
        let cell = collectionView.deque(cell: UICollectionViewCell.self, at: indexPath) // Good
}