软件质量，不但依赖于架构及项目管理，而且与代码质量紧密相关。这一点，无论是敏捷开发流派还是传统开发流派，都不得不承认。

　　　　本书提出一种观念：代码质量与其整洁度成正比。干净的代码，既在质量上较为可靠，也为后期维护、升级奠定了良好基础。-Software quality, not only depends on the architecture and project management, but also closely related with the code quality. This is, whether schools or traditional development agile development schools had to admit. This book presents a concept: the code quality is proportional to its degree of cleanliness. Clean code, both in quality and more reliable, but also for later maintenance, upgrades and laid a good foundation.