How to restrain one's self from the overwhelming urge to rewrite everything?

Question

Setup

Have you ever had the experience of going into a piece of code to make a seemingly simple change and then realizing that you\'ve just stepped into a wasteland tha

Answer 1

Write more unit tests just to find out that the code is running perfectly fine.

If you still have the urge to rewrite it, you will have some tests to find out that your rewriten code is now failing ;)