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In my experience it doesn’t matter. You have to regularly refactor your code to keep up with new features. The more often you can make time to do it the easier it is.
6 points
This, to a point.
Other things help :
- Unit test to help catch regressions. If you are confident in your test catching a good portion of bugs from refactoring, at least you feel confident refactoring. Worst case, at least you ensured your code is testable. There is nothing worse than refactoring untestable code.
- Self-documenting code and when it fails to self-document, comments or refer to a wiki page.
