title: Nested ternary operators
body: <p>I have this code:</p>
  
  <pre><code>_viewModel.PhoneDefault = user == null ? "" :
      (string.IsNullOrEmpty(user.PhoneDay) ?
          (string.IsNullOrEmpty(user.PhoneEvening) ?
              (string.IsNullOrEmpty(user.Mobile) ? "" : 
                  user.Mobile) :
              user.PhoneEvening) :
           user.PhoneDay);
  </code></pre>
  
  <p>Is there a better way to write this to make it more readable?</p>