I think when Big Nerd Ranch decide it&#x27;s time to move to Swift, then it&#x27;s time to move to Swift.<p><a href="https:&#x2F;&#x2F;www.bignerdranch.com&#x2F;we-write&#x2F;ios-programming&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.bignerdranch.com&#x2F;we-write&#x2F;ios-programming&#x2F;</a>