How to Use Protocol in Functional Programming Work

Feature toggles, right? That's something I've been wanting to take a look at. We had a previous episode where there's a company that was handling feature toggles for Alexa applications. And also I want to write about protocol and how we use it in our case. It's some kind of pattern factory, but for functional programming work. After that, I want to writing an article about presenter. It's also a pattern that we use in OOP work.