         if let cachedImage = ImageView.p_sharedImageCache.cachedImageForRequest(request) {
             image = cachedImage
             imageRequestOperation = nil
+            postNotification()
         } else {
             if let placeholder = placeholder {
                 image = placeholder

        
        p_setImageWithRequest(request, placeHolderImage: placeholder)
    }
}



public let kPNKDidFinishSettingImageFromURLToImageView = "kPNKDidFinishSettingImageFromURLToImageView"

private func imageCacheKeyFromURLRequest(request: NSURLRequest) -> String {
    return request.URL!.absoluteString
