title: {(Int)} is not identical to UInt8
body: <p>Currently using beta 5 version of swift and There must have been a change to the <code>+=</code> operator </p>
  
  <pre><code>func dealCards1() -&gt; [Int] {
      for i in 0...25{
          comp1PlayDeck += shuffledDeck[i]
      }
      return comp1PlayDeck
  }
  </code></pre>
  
  <p>this throws the <code>'[(Int)]' is not identical to 'UInt8'</code> I am not quite sure what changes were made however It is quite confusing.</p>