I hate to be critical in a terribly ad hominem way, but I find programming/tech articles written in that '13 year old boy who has had a little too much fizzy pop to drink' style with the 'hilarious' l33t-speak aren't really helping eliminate some of the more negative preconceptions of us hackers out there.
yep, agreed ... especially because it sounds so artificial, like they're trying to make AT&T engineering seem hip and cool. if you read just the conclusion, it sounds like a normal article, so clearly someone made a concerted effort to sound 1337 in the rest of the article. if the author had really been a 13-year-old kid, the conclusion wouldn't sound so 'formal'
It's totally not artificial. That's just how Aaron (yc user tenderlove and author of the article) talks and writes. It's totally sincere. See his blog and twitter for further evidence. http://tenderlovemaking.comhttp://twitter.com/tenderlove
EDIT: sorry tenderlove ... that was just my gut first reaction. perhaps it was cognitive dissonance from seeing an AT&T Engineering banner mixed with an ultra-casual blog post :)
I don't know ruby but it appears he didn't write a code coverage tool as the title says but rather formatted the output from the built in code coverage tool into html.