Martin大叔经典著作《重构》第二版，仅供交流学习之用。Thiseagerlyawaitedneweditionhasbeenfullyupdatedtoreflectcrucialchangesintheprogramminglandscape.Refactoring,SecondEdition,featuresanupdatedcatalogofrefactoringsandincludesJavaScriptcodeexamples,aswellasnewfunctionalexamplesthatdemonstraterefactoringwithoutclasses.