重構是什麼？

Image Not Showing Possible Reasons

The image file may be corrupted
The server hosting the image is unavailable
The image path is incorrect
The image format is not supported

名詞定義

出自於 Refactoring 2/E

Refactoring (noun): a change made to the internal structure of software to make it easier to understand and cheaper to modify without changing its observable behavior.

Refactoring (verb): to restructure software by applying a series of refactorings without changing its observable behavior.

出自於 Working Effectively with Legacy Code

常見迷思

一定需要用很多時間來重構。
重構會讓推出新功能的速度變慢。
重構會讓程式運行速度變慢。
重構過程中可以順便添加新功能。