코드에 나쁜 CodeSmell이 느껴진다면 Refactoring해야한다.
- Duplicated code
- Long method
- Large class
- Long parameter list
- Divergent change
- Shotgun Surgery
- Feature envy
- Primitive obsession
- Switch statements
- Parallel inheritance hierarchies
- Lazy class
- Speculative generality
- Temporary field
- Message chains
- Middle man
- Inappropriate intimacy
- Alternative classes with different interface
- Incomplete library class
- Data class
- Refused bequest
- Comments