Reactive programming model

Simply put, reactive programming is nothing but programming with asynchronous data streams. By applying various operations on stream, we can achieve different computational goals. The primary task in a reactive program is to convert the data into streams, regardless of what the source of the data is. While writing modern graphical user interface applications, we process mouse move-and-click events. Currently, most systems get a callback, and process these events as and when they happen. Most of the time, the handler does a series of filtering operations before it invokes the action methods associated with the event calls.

In this particular context, reactive programming helps us in aggregating the mouse move-and-click events into a collection, and sets filters on them before notifying the handler logic. In this way, the application/handler logic does not get executed unnecessarily.

Stream-processing model is well known, and it is very easy to encode by application...