title: Real world Haskell programming
body: <p>Having been an imperative developer for some years now, I had never had the urge to learn functional programming.</p>
  
  <p>A couple months ago at last I decided to learn Haskell. It's quite a cool language, but I'm puzzled about how an event driven real app would be programmed in such a language. Do you know of a good tutorial about it?</p>
  
  <p><strong>Note:</strong> When I say "real app" I'm not talking of a real world, production ready app. I just mean a little sample app, just to get the grasp of it. I think something like a simplified version of the windows caculator would be great, and then perhaps something a bit more complex.</p>