What I’ve learned by doing The Gilded Rose Kata (4 refactoring tips)

Let me first start with an explanation of what a code kata actually is. It’s an exercise which helps programmers improve their skills through practice and repetition.The Gilded Rose Kata is all about two classes Item and GildedRose that you should refactor. Item has name, sell_in and quality attributes. GildedRose class has update_quality method responsible for decreasing sell_in and updating the quality attributes for each item.