Thanks for this great overview. The style you showed here is also called "declarative programming". I have discovered a complete architecture that is declarative. I fugure this might be intersting for you. my recent article about it: https://medium.com/devgauge/declarative-immutable-and-brain-sized-swift-did-i-discover-a-new-paradigm-1514c1614ea8?source=friends_link&sk=1fa0df727690e735b690e67b5d1edb3f