Exploring the pillars of reactive programming
Reactive programming is among the major programming paradigms used by developers worldwide. Every programming paradigm solves some problems and has its own advantages. By definition, reactive programming is programming with asynchronous data streams and is based on observer patterns. So, let’s talk about these pillars of reactive programming!
Data streams
Data streams are the spine of reactive programming. Everything that may change or happen over time (you don’t know when exactly) is represented as asynchronous streams such as events, notifications, and messages. Reactive programming is about reacting to changes as soon as they are emitted!
An excellent example of data streams is UI events. Let’s suppose that we have an HTML button and we want to execute an action whenever a user clicks on it. Here, we can think of the click event as a stream:
//HTML code <button id='save'>Save</button...
