Articles
Code refactoring best practices: When and how to do it
Learn when refactoring pays off, how to do it safely and which habits keep your codebase clean as it grows.
Refactoring is the discipline of improving the structure of code without changing what it does. Done well, it makes every future change cheaper; done badly, it introduces bugs nobody asked for.
When should you refactor?
The best moment to refactor is right before you add a feature to an area that is hard to change. If you need to read a function three times to understand it, that is a signal the code is asking for attention.
Avoid large rewrites on a deadline. Small, continuous improvements merged often are far less risky than a big-bang cleanup.
How to refactor safely
Start with tests that pin down current behaviour, make one small change at a time and lean on your editor’s automated refactoring tools for renames, extractions and moves.
