My version of this is test cases (e.g correct), simple, fast: in that order. With test cases you can refactor your initially complex and naive solution as many

My version of this is test cases (e.g correct), simple, fast: in that order. With test cases you can refactor your initially complex and naive solution as many times as needed until the solution is easy to understand and elegant. I've rarely made something simple the first time around. To get to simple I need to work at it. And I'd like to know I'm not breaking things when I do that work.