Exploration Through Example

Example-driven development, Agile testing, context-driven testing, Agile programming, Ruby, and other things of interest to Brian Marick

191.8

⇒

167.2

⇒

186.2

183.6

184.0

183.2

184.6

Tue, 10 Aug 2004

If statements and duplication

I'm a big fan of hearing little stories that lead to little lessons. Being good at a craft requires knowing a whole slew of little lessons and having your mind be primed to pull them into action. Here's a nicely put little lesson from Kevin Rutherford.

Therefore it seems to me that there are two kinds of conditional statement in a codebase: The first kind tests an aspect of the running system's external environment (did the user push that button? does the database hold that value? does that file exist?). And the second kind tests something that some other part of the system already knows. Let's ban the second kind...

## Posted at 07:02 in category /coding [permalink] [top]