> every time your code should have had an if Yeah, I should've probably clarified this, seeing as we're on the topic of correctness and pedantry. Personally I

> every time your code should have had an if Yeah, I should've probably clarified this, seeing as we're on the topic of correctness and pedantry. Personally I'm doing this in TDD style, before the code is written. And then while it's written, too. And for code that didn't have tests—the approach really helps catch bugs previously unknown.