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Refactoring: Improving the Design of Existing Code Don Roberts, John Brant, Kent Beck, Martin Fowler, William Opdyke
Publisher: Addison-Wesley Professional

Most of them were based on existing code. Once upon a time, a consultant made a visit to a development project. Final Thoughts Refactoring Helps You Find Bugs . Refactoring Improving the Design of Existing Code Replacing the Conditional Logic on Price Code with Polymorphism . Usage of the term increased after it was featured in Refactoring: Improving the Design of Existing Code.[1] Code smell is also a term used by agile programmers.[2]. Refactoring enables an approach to design I call reflective design. Where Did Refactoring Come From? Software developers are professionals. Our job is to build effective software as rapidly as we can. Http://www.storytellersoftware.com Mark Mahoney. Refactoring is the process of changing a software system in such a way that it does not alter the external behavior of the code yet improve its internal structure. Facing an existing project, you sometimes get confronted with “code that smells”. In addition to creating a design and coding it, you can now analyze the design of existing code and improve it. In my career, a very little portion of the projects I was involved with were based on new code. My experience is that refactoring is a big ait to building software quickly. Preface from the book 'Refactoring: Improving the Design of Existing Code'.