A measure for good code

Today we discussed with a colleague what is good code and what isn’t. We somewhat agreed that good code is code that can be understood and changed by people who aren’t the author. Hours later, I found this quote in the book I’m reading and wanted to share it:

The true test of good code is how easy it is to change it.

Martin Fowler, Refactoring

There’s code people understand, change, and create a mess. There’s code people understand, change, and don’t create a mess. There’s code people don’t understand and don’t change. It stays perfect until somebody decides to start over and create a two-headed Hydra because they see no other way.