Sure. tagged_tuple is to operate with sum types. Which are one of the ways to making impossible states impossible in the app. Here is a good article about these https://thoughtbot.com/blog/better-domain-modeling-in-elixir-with-sum-types
Here is an example of ShipmentWeight sum type that can be persisted with Ecto.
And this is generic Domo/example_avialia/lib/example_avialia/tagged_tuple_ecto_type.ex at master · IvanRublev/Domo · GitHub to do so for any tagged tuple.
