Inspired by this video, I used the 'with' macro in Elixir to cleanly refactor some code.
The problem I was trying to solve was that on module had a handle_event function that matched on the type of the first argument
def handle_event(%Events.TitleChanged{title: title}), do: ...But there were an increasing number of Event types. So this module was getting quite long and I wanted to split it into several modules that would each handle one group of events.
I split it into 3 sections, and made a default function for each of them return :not_handled.
def handle_event(_), do: :not_handled
Then I used `with` (as shown below), to keep trying until I find one that handles it.
