title: Why is iterating through NSArray is faster than iterating through NSSet?
body: <p>I was wondering Why is iterating through NSArray is faster than iterating through NSSet? I imaging that it has something to do with the fact that NSArray is ordered while the NSSet is not but I what a certified answer instead of just guessing. </p>
  
  <p>Edit:</p>
  
  <p>my question was: why is it faster which is not explained in that topic. and not if its faster.</p>