title: Swift 2.0 String with substringWithRange
body: <p>I am trying to get first char from String. It should be easy but I can't do in Swift 2.0 (with Xcode beta 6). </p>
  
  <p><a href="https://stackoverflow.com/questions/24092884/get-nth-character-of-a-string-in-swift-programming-language">Get nth character of a string in Swift programming language</a></p>
  
  <p>I have tried that method also. It use extension but I can't retrieve using that method. May I know how to do?</p>