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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

By re-running the test cases, the developer can be confident that code refactoring is not damaging any existing functionality. Refactoring is defined as a disciplined technique for restructuring an existing body of code, altering its internal structure without changing its external behavior. But what does "updating" means to any human being? It is the process of changing a software system in such a way that it does not alter the external behavior of the code, yet improves its internal structure. Http://www.storytellersoftware.com Mark Mahoney. Refactoring: Improving the Design of Existing Code. [3, 4] In his book on refactoring . At last, I have decided to update myself ;)!!! Usage of the term increased after it was featured in Refactoring. For instance, RTL refactoring can be used to abstract and understand a design [6], prepare a design for other purposes such as validation or elastization [2], optimize a design for specific tools such as synthesis or to simply improve the design of existing code [3]. More specially to a little person like me. Improving the Design of Existing Code. Refactoring is about improving the design of existing code. Refactoring – Improving the design of existing code. 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]. The concept of 'Code smells' was popularized by Kent Beck and Martin Fowler in the book 'Refactoring: Improving the Design of Existing Code' (ISBN 978-0201485677). The term “code smell” is attributed to Kent Beck in Martin Fowler's book Refactoring, Improving the Design of Existing Code (Addison-Wesley, 1999, ISBN 0-201-48567-2). According to Refactoring: Improving the Design of Existing Code (by Martin Fowler, Kent Beck, John Brant, William Opdyke, Don Roberts p.87), there are two ways to solve it.