不错的一本书，最近在做代码优化和重构的时候看的，给大家分享一下-Clean Code is divided into three parts. The first describes the principles, patterns, and practices of writing clean code. The second part consists of several case studies of increasing complexity. Each case study is an exercise in cleaning up code—of transforming a code base that has some problems into one that is sound and efficient. The third part is the payoff: a single chapter containing a list of heuristics and “smells” gathered while creating the case studies. The result is a knowledge base that describes the way we think when we write, read, and clean code.

　　Readers will come away from this book understanding

　　How to tell the difference between good and bad code

　　How to write good code and how to transform bad code into good code

　　How to create good names, good functions, good objects, and good classes

　　How to format code for maximum readability

　　How to implement complete error handling without obscuring code logic

　　How to unit test and practice test-driven develo