31天重构指南之十五：移除重复内容

1: public class MedicalRecord

2: {

3:     public DateTime DateArchived { get; private set; }

4:     public bool Archived { get; private set; }

5: 

6:     public void ArchiveRecord()

7:     {

8:         Archived = true;

9:         DateArchived = DateTime.Now;

10:     }

11: 

12:     public void CloseRecord()

13:     {

14:         Archived = true;

15:         DateArchived = DateTime.Now;

16:     }

17: }

下面是我们重构后的代码，请记住只要有可能就请应用该重构，因为这可以帮你减少代码中的bug数量，另外请牢记DRY(don’t repeat yourself)原则，尽量不要复制/粘贴代码。

1: public class MedicalRecord

2: {

3:     public DateTime DateArchived { get; private set; }

4:     public bool Archived { get; private set; }

5: 

6:     public void ArchiveRecord()

7:     {

8:         SwitchToArchived();

9:     }

10: 

11:     public void CloseRecord()

12:     {

13:         SwitchToArchived();

14:     }

15: 

16:     private void SwitchToArchived()

17:     {

18:         Archived = true;

19:         DateArchived = DateTime.Now;

20:     }

21: }

原文链接：http://www.lostechies.com/blogs/sean_chambers/archive/2009/08/15/refactoring-day-15-remove-duplication.aspx