# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2017-11-04 20:25:31 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/926908288448516096) In reply to: [@keefmoon](http://twitter.com/keefmoon/status/926907994008408066) @nicklockwood @SteveStreza That way if to have a struct of that type, you can be sure that it’s data came from the API, not local mutation.