Structuring functional and reactive code

Finally, all principles have now been covered, as well as the tools needed to implement functional and reactive code. By the way, the previous example is already a functional application: component_a, is a pure function, and component_b is a side effect. However, the main code that instantiates and connects both components cannot be a pure function because it uses component_b which is a side effect. If the instantiation of this side effect is moved to a dedicated side effect initialization part of the code then the rest of the code would be completely composed of pure functions. This is the concept of the Cycle.js framework, a JavaScript framework that allows for writing functional and reactive code. These principles have been used by other frameworks since its creation, and they are applicable to Python and RxPY. With just a few changes...