So far parts of Domain Modeling Made Functional have been quite useful, yes.
I’ve been confused about how to structure an app, and Scott Wlaschin’s book helped a good deal with thinking about how to organize contexts, modules, how to think about them communicating with each other.
Unlike Elixir, F# is statically typed, and Domain Modeling Made Functional turns the custom types knob up to 11 to match the way non-programming stakeholders in a project might think and talk (no strings or ints or floats). It’s awesome, actually. I’m guessing that similar moves might possibly work in Elixir with embedded Ecto schemas or module structs made just so. But I haven’t tried anything there yet, but it certainly helps to have in my mind while I’m setting up a schema for example.