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- removed the requirements of gilded rose
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NicoSimoski 2023-07-27 11:55:50 +02:00 committed by GitHub
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;; Hi and welcome to team Gilded Rose. As you know, we are a small inn
;; with a prime location in a prominent city ran by a friendly
;; innkeeper named Allison. We also buy and sell only the finest goods.
;; Unfortunately, our goods are constantly degrading in quality as they
;; approach their sell by date. We have a system in place that updates
;; our inventory for us. It was developed by a no-nonsense type named
;; Leeroy, who has moved on to new adventures. Your task is to add the
;; new feature to our system so that we can begin selling a new
;; category of items.
;; First an introduction to our system:
;; All items have a SellIn value which denotes the number of days we have to sell the item
;; All items have a Quality value which denotes how valuable the item is
;; At the end of each day our system lowers both values for every item
;; Pretty simple, right? Well this is where it gets interesting:
;; Once the sell by date has passed, Quality degrades twice as fast
;; The Quality of an item is never negative
;; "Aged Brie" actually increases in Quality the older it gets
;; The Quality of an item is never more than 50
;; "Sulfuras", being a legendary item, never has to be sold or decreases in Quality
;; "Backstage passes", like aged brie, increases in Quality as it's
;; SellIn value approaches; Quality increases by 2 when there are 10
;; days or less and by 3 when there are 5 days or less but Quality
;; drops to 0 after the concert
;; We have recently signed a supplier of conjured items. This requires an update to our system:
;; "Conjured" items degrade in Quality twice as fast as normal items
;; Feel free to make any changes to the UpdateQuality method and add
;; any new code as long as everything still works correctly. However,
;; do not alter the Item class or Items property as those belong to the
;; goblin in the corner who will insta-rage and one-shot you as he
;; doesn't believe in shared code ownership (you can make the
;; UpdateQuality method and Items property static if you like, we'll
;; cover for you).
;; Just for clarification, an item can never have its Quality increase
;; above 50, however "Sulfuras" is a legendary item and as such its
;; Quality is 80 and it never alters.
;; https://github.com/emilybache/GildedRose-Refactoring-Kata
;; Common Lisp version: Rainer Joswig, joswig@lisp.de, 2016