> There is a trick to rewrites: start by writing a full suite of end to end tests. Once done you'll discover that you can easily stabilize your old code and mak

> There is a trick to rewrites: start by writing a full suite of end to end tests. Once done you'll discover that you can easily stabilize your old code and make changes with this security harness. I would call that refactoring, whereas a rewrite means starting from scratch. I agree that refactoring is the superior choice if at all possible.