重构：坏味道

坏味道（smell）	常用的重构手法（Common Refactoring）
Alternative Classes with Different Interfaces, p85	Rename Method (273), Move Method (142)
Comments, p87	Extract Method (110), Introduce Assertion (267)
Data Class, p86	Move Method (142), Encapsulate Field (206), Encapsulate Collection (208)
Data Clumps, p81	Extract Class (149), Introduce Parameter Object (295), Preserve Whole Object (288)
Divergent Change, p79	Extract Class (149)
Duplicated Code, p76	Extract Method (110), Extract Class (149), Pull Up Method (322), Form Template Method (345)
Feature Envy, p80	Move Method (142), Move Field (146), Extract Method(110)
Inappropriate Intimacy, p85	Move Method (142), Move Field (146), Change Bidirectional Association to Unidirectional (200), Replace Inheritance with Delegation (352), Hide Delegate (157)
Incomplete Library Class, p86	Introduce Foreign Method (162), Introduce Local Extension (164)
Large Class, p78	Extract Class (149), Extract Subclass (330), Extract Interface (341), Replace Data Value with Object (175)
Lazy Class, p83	Inline Class (154), Collapse Hierarchy (344)
Long Method, p76	Extract Method (110), Replace Temp With Query (120), Replace Method with Method Object (135), Decompose Conditional (238)
Long Parameter List, p78	Replace Parameter with Method (292), Introduce Parameter Object (295), Preserve Whole Object (288)
Message Chains, p84	Hide Delegate (157)
Middle Man, p85	Remove Middle Man (160), Inline Method (117), Replace Delegation with Inheritance (355)
Parallel Inheritance Hierarchies, p83	Move Method (142), Move Field (146)
Primitive Obsession, p81	Replace Data Value with Object (175), Extract Class (149), Introduce Parameter Object (295), Replace Array with Object (186), Replace Type Code with Class (218), Replace Type Code with Subclasses (223)
Refused Bequest, p87	Replace Inheritance with Delegation (352)
Shotgun Surgery, p80	Move Method (142), Move Field (146), Inline Class (154)
Speculative Generality, p83	Collapse Hierarchy (344), Inline Class (154), Remove Parameter (277), Rename Method (273)
Switch Statements, p82	Replace Conditional with Polymorphism (255), Replace Type Code with Subclasses (223), Replace Type Code with State/Strategy (227), Replace Parameter with Explicit Methods (285)
Temporary Field, p84	Extract Class (149), Introduce Null Object (260)