TL;DR You probably often hear about engineers talking about a term called reactive programming, so what is it actually? Why you should know it, not only to avoid awkwardness in front of your peers but also to secure your next high paid jobs? Let's find out.
Starting with a simple comparison so that you can have a fundamental understanding of it:
you have a Math project that takes several numbers and operators to compute a final value; for simple addition
int numberA = 1