Simplifies the UITableView cell methods that are called all the time, and does away with annoying force unwraps in ViewControllers.

CollectionViewHelpers.swift

import UIKit

public extension UICollectionView {
    public func register<T: UICollectionViewCell>(type: T.Type) {
        registerNib(T.Nib, forCellWithReuseIdentifier: T.Identifier)
    }
    
    public func cell<T: UICollectionViewCell>(forIndexPath indexPath: NSIndexPath) -> T {
        return dequeueReusableCellWithReuseIdentifier(T.Identifier, forIndexPath: indexPath) as! T
    }
    
    public func register<T: UICollectionReusableView>(type: T.Type, forSupplementaryViewOfKind kind: String) {
        registerNib(T.Nib, forSupplementaryViewOfKind: kind, withReuseIdentifier: T.Identifier)
    }
    
    public func supplementaryView<T: UICollectionReusableView>(ofKind kind: String, forIndexPath indexPath: NSIndexPath) -> T {
        return dequeueReusableSupplementaryViewOfKind(kind, withReuseIdentifier: T.Identifier, forIndexPath: indexPath) as! T
    }
}

TableViewHelpers.swift

/* With these extensions, all you need to do to register a nib is:
/
/  tableView.register(CustomCell.self)
/
/  And to dequeue, just call:
/
/  let cell: CustomCell = tableView.cell(forIndexPath: indexPath)
/
/  No string constants, no repeating cell class, and no pesky 'as!'
*/

import UIKit

public extension UITableView {
    public func register<T: UITableViewCell>(type: T.Type) {
        registerNib(T.Nib, forCellReuseIdentifier: T.Identifier)
    }
    
    public func cell<T: UITableViewCell>(forIndexPath indexPath: NSIndexPath) -> T {
        return dequeueReusableCellWithIdentifier(T.Identifier, forIndexPath: indexPath) as! T
    }
    
    public func register<T: UITableViewHeaderFooterView>(type: T.Type) {
        registerNib(T.Nib, forHeaderFooterViewReuseIdentifier: T.Identifier)
    }
    
    public func headerFooterView<T: UITableViewHeaderFooterView>() -> T {
        return dequeueReusableHeaderFooterViewWithIdentifier(T.Identifier) as! T
    }
}

ViewHelpers.swift

// Easy access to Nib and Identifier, provided you always name Identifier the same as class

import UIKit

public extension UIView {
    public static var Nib: UINib {
        let bundle = NSBundle(forClass: self)
        return UINib(nibName: Identifier, bundle: bundle)
    }
    public static var Identifier: String {
        return String(self)
    }
}