title: What's the difference between arc4random and arc4random_uniform?
body: <p>I've seen old posts about the differences between <code>random</code> and <code>arc4random</code> in Objective-C, and I've seen answers to this online but I didn't really understand, so I was hoping someone here could explain it in an easier-to-understand manner.</p>
  
  <p>What is the difference between using <code>arc4random</code> and <code>arc4random_uniform</code> to generate random numbers?</p>