title: What are the difference between business logic and UI logic?
body: <p>I am learning state management in <code>flutter</code> and most of the time I encounter with words <code>business logic</code> <code>ui logic</code> and some time <code>presentation logic</code>, I searched it on the internet as people explain it in different languages, I couldn't get a better understanding, Could someone please show these three types of <code>logic</code> in the form of an example and explain it very clean and easy?</p>