title: UIScrollView: How would I recycle objects in my scrollable grid when the user scrolls?
body: <p>I've got an UIScrollView with a grid of images. Currently they're only 6, but there might be  a few hundred some day. So of course it would be a bad idea to create a few hundred UIImageView objects inside that UIScrollView and fill them all up with image data. I think I was reading this somewhere in the Apple docs: They recommend to only create so mutch elemends as you need to fill up the scrollable visible area.</p>
  
  <p>But I fear performance issues if I would instantly reposition UIImageView elements. I think. As the user starts to scrolls down (lets assume it starts at 0,0), I'd have to reposition those UIView objects that go out of visible area at the top, positioning them quickly to the bottom and then assigning very (!!) quickly an new image object to that UIImageViews in the row. I mean... what if the user starts scrolling like a wild gazelle, faster and faster?</p>
  
  <p>How's your approach for doing that?</p>