[crusso]

Or you can use it for local development, as you edit code

This is a huge feature for me in my Elixir development. I mostly use Elixir for some server code that manages many connections to external network entities. It would be a huge hassle to bring down my server application every time I want to make a change.

With Elixir (yeah, Erlang), I can normally recompile the module I'm working on and deploy it in the running server. Not only is it a good way to constantly observe Erlang hot-swapping in action on my dev machine, it's a huge time saver.