TDD is most useful to me for algorithmic logic. I tend to pull a lot of that stuff out of my code, because it's not related to my domain. TDD is a lifesaver f

TDD is most useful to me for algorithmic logic. I tend to pull a lot of that stuff out of my code, because it's not related to my domain. TDD is a lifesaver for random one off algorithmic problems. You can either write it in 5 minutes, and spend the next 2 weeks fixing random bugs in your `includeRange` implementation, or you can spend 20 minutes to TDD the function and be done forever.