To finish the implementation of the 2-book-discount rule we need to apply it to every pair of books in the order. Therefore, we need to detect pairs and handle them. In this episode, I prepare the implementation for this.
► All Potter Kata Episodes: http://goo.gl/m9E4vF
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«Code Kata»
Code Kata are small and simple programming problems that we execute to practice software engineering methods, like TDD or pair programming. The term is derived from Japanese martial arts.
«Other Series»
► Let’s Develop Conway’s Game of Life: http://goo.gl/xc59GX
► Let’s Refactor MovieRental: http://goo.gl/f7Yf21
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