We are going to reuse all the code that we must have uncoupled from the UI Framework, since being different versions of the same app it makes sense that this code is shared and not write twice.

If you're a newbie in coding then I think you will definitely came across with this question. One of the most common question one ask or search before entering the world of programming.

The final bullet deals with the irritating, but a considerably less dangerous avalanche of articles, tirelessly repeating the same stuff over and over again.