A lot of people are really up their own behinds about this not being the best practice, thinking that it's because coders don't know basic math instead of the fact that the computation time on this O(n) is over twice as long as a while loop. Elitists are often not elite, and the comments on this solution are the proof.

Faster to type, but not faster to compute. It takes over twice as long for the computer to accomplish this task than a while loop. Hopefully in the past three years you've come to realize the compounding importance of this and perhaps grown some perspective on why you may not always be right, while looking down on others less.