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let backgroundQueue : dispatch_queue_t = dispatch_queue_create("com.aGupieWare.SwiftNetworking.backgroundQueue", nil)

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// endpoint of corresponding supply item image //
let urlString : String = supplyItem.bsn_image!

dispatch_async(self.backgroundQueue, { () -> Void in
    
    /* capture the index of the cell that is requesting this image download operation */
    var err : NSError?
    /* get url for image and download raw data */
            
    if err == nil {

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var capturedIndex : NSIndexPath? = indexPath.copy() as? NSIndexPath

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let url = NSURL(string: urlString)!
var imageData : NSData? = NSData(contentsOfURL: url, options: NSDataReadingOptions.DataReadingMappedIfSafe, error: &err)

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let itemImage = UIImage(data:imageData!)

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let currentIndex = tableView.indexPathForCell(cell)

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currentIndex?.item == capturedIndex!.item

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@IBOutlet weak var bsn_imageView: UIImageView!
@IBOutlet weak var bsn_textView: UITextView!
var bsn_plumbingItem: PlumbingSupplyItem?
var bsn_capturedImage: UIImage?

var urlSession = NSURLSession.sharedSession()
let backgroundQueue : dispatch_queue_t = dispatch_queue_create("com.aGupieWare.SwiftNetworking.backgroundQueue", nil)

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/*
// MARK: - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

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let destViewController = segue.destinationViewController as PlumbingSupplyItemDescriptionViewController
let selectedCell = sender as UITableViewCell
let selectedIndex = self.tableView.indexPathForCell(selectedCell)
destViewController.bsn_plumbingItem = self.dataSource[selectedIndex!.row]
destViewController.bsn_capturedImage = selectedCell.imageView.image