haskell - Collecting IO outputs into list -


How do I make multiple calls and collect all the results by output SDL.NoEvent In the list?

Essential words like this: 

  events = [] event = SDL.pollEvent while (event! = SDL.NoEvent) {events.add (event) event = SDL. PollEvent} 
 
 James Cook, with this function:   
 Pre>  unfoldWhileM :: Monad m = & gt; (A -> Child) - & gt; I'm a - & gt; M [A] used with SDL

: 

  Events & lt; - unfoldWhileM (/ = SDL.NoEvent) SDL.pollEvent

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