In the future I’ll use it likely with QuasselDroid-NG, an app of mine that’s very early in development, and for which I developed it.

The use case there is that we have a list of IRC messages, constantly updating and adding messages at any point of the list, and we want to update the UI and animate.

The client can also cache, or preload, messages at any point, or throw them away.

Additionally, users can filter, search, or choose to disable some messages.

Other messages might get merged, or synthetic ones inserted.

So I have a backing store of messages that can constantly change, I have on top of that a stream of transformations taking part, and on top of that an interface presenting a single, consistent Java List, but also triggering the relevant updates on Android’s recyclerview.

Most importantly, you can just add a message to the lowest list, it will be properly filtered, transformed, animated, and displayed, and this properly threadsafe across UI thread, backend thread, and filtering threadpool, while being faster than the solutions Realms and co provide for such updated UI.