# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2018-03-29 17:33:24
> [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/979411213590450176)
RT @johnsundell: A cool thing about Swift typealiases is that they can be generic! šĀ Combine that with tuples and you can easily define simā¦