title: Dictionary literal contains duplicate keys
body: <p>I have a dictionary data of type [[String:AnyObject]] in the format below and my app crashes with <strong>"fatal error: Dictionary literal contains duplicate keys"</strong> whenever I run my App.</p>
  
  <p>I tried to manually delete duplicate data (out of 3000+ records :-() but that didn't work because I may have missed one or two duplicate records.</p>
  
  <pre><code>[
      "id": "1",
      "alpha": "A",
      "title": "Title",
      "SubTitle": "Sub Title",
      "Text": "My Text"
  ],
  [
      "id": "2",
      "alpha": "B",
      "title": "Title",
      "SubTitle": "Sub Title",
      "Text": "My Text"
  ]
  </code></pre>
  
  <p>Any guide on how to remove duplicate keys from dictionary with code would be highly appreciated.</p>