anchor.diff:  type CreditsViewController () as controller =
       inherit UIViewController ("CreditsViewController", null)
   
  -    let mutable products:(string * string * string * string) list = []
  +    let mutable products:(string * string * string * string * SKProduct) list = []
   
       let localizedPrice (product:SKProduct) =
           let formatter = new NSNumberFormatter()
  
positive.code:         new UITableViewSource() with
  
              override this.GetCell(tableView, indexPath) =
                  let (id, name, desc, price) = products.[indexPath.Row]
                  let cell = 
                      match tableView.DequeueReusableCell "credits-product-cell" with
                      | null -> new UITableViewCell (UITableViewCellStyle.Subtitle, "credits-product-cell")
  
negative.code:                                 product.ProductIdentifier,
                                  product.LocalizedTitle,
                                  product.LocalizedDescription,
                                  (localizedPrice product),
                                  product
                              )
                      ]
  
  