I took the same way You did, just a bit earlier. As You, I read all the Ruby books You mentionned…
I can remember the depressing feeling of not finding the equivalent of what I learned, all those things Sandi Metz was praising… is it just replaced by MFA?
In Ruby, often You find small objects, used for one function only, that could be parser.parse(), presenter.present()… anything like this. In FP You pass a function.
High order functions are so powerful (something Ruby touch with Lambda) that You don’t need Template, or Strategy patterns.
In Erlang/Elixir, we have some famous Erlangelist… this is one of my favourite talk to understand why this difference is so appealing.
He is the author of Elixir in action, and runs https://www.theerlangelist.com/
