title: Change Language inside Application
body: <p>In my iOS app, I am planning to let user to change the language. </p>
  
  <p>What is the best approach to accomplish this? </p>
  
  <p>Currently all my String is inside a struct. But I am wondering what is the best approach to change language according to what user choose. </p>
  
  <p>Any suggestions? </p>