title: Error: Variable used within its own initial value?
body: <p>i'm trying to convert source code developed in Xcode 6.4 into Xcode 7. I'm getting some new errors. Below code which works fine in Xcode 6.4 is not working in Xcode 7  </p>
  
  <pre><code> for (index: String, category: JSON) in json["payload"]["categoryList"] {
          let category:Category = Category(category : category)
        categoryList.append(category)
      }
  </code></pre>