1、代码坏味道
重复代码（Duplicated Code）
Extract Class;
Extract Medhod;
Pull Up Method;
Template Method 设计模式；
过长函数（Long Method）
Extract Method
Replace Temp with Query
Introduce Parameter Object、Preserve Whole Object
Replace Method with Method Object
Large Class(过大的类)
Extract Class
Extract Subclass
Extract Interface
Long Parameter List(过长参数列)
Introduce Parameter Object、Preserve Whole Object
Divergent Change(发散式变化)
软件本就该“软”，一旦需要修改，希望直接跳到修改点，只在该处修改不影响其他。
Extract Class
Shotgun Surgery(散弹式修改)
Move Method
Move Field
Inline Class
Feature Envy(依恋情结)
Move Method
Move Field
Extract Class
Data Clumps(数据泥团)
Extract Class
Introduce Parameter Object
Preserve Whole Object
Primitive Obsession(基本类型偏执)
Replace Data Value with Object
Replace Type Code with Class、Replace Type Code with State/Strategy
Switch Statements(switch 惊悚现身)
Replace Type Code with Subclasses
Replace Type code iwth State/strategy
Replace Conditional with Polymorphism
Replace Parameter with explicit Methods
Introduce Null Object
Parallel Inheritance Hierarchies(平行继承体系)
Move method
Move field
Lazy Class(冗赘类)
Collapse Hierarchy
Speculative Generality(夸夸其谈未来性)
Collapse Hierarchy
Inline Class
Rename Method
Temporary Field（令人迷惑的字段）
Extract Class
Introduce Null Object
Message Chains(过度耦合消息链)
Hide Delegate
Middle Man(中间人)
Remove Middle Man
InlineMethod
Replace Delegation with Inheritance
Inappropriate Intimacy(狎昵关系)
Move Method
Move Field
Change Bidirectional Association to Unidirectional
Hide Delegate
Alternative Classes with Different Interfaces(异曲同工的类)
Rename Method
Extract Superclass
Incomplete Library Class(不完美的类库)
Introduce Foreign Method
Introduce Local Extension
Data Class(纯挚的数据类)
Encapsulate Field
Encapsulate Collection
Remove Setting Method
Refused Bequest(被拒绝的遗赠)
Push Down Method\
Push Down Field
Replace Inheritance with Delegation
Comments(过多的注释)
Rename Method
Extract Class