"I just read the post: Rail Spikes: Functional programming and looping by Jon. It's a nice post, and I completely agree - you should never write for/while/do-while loops.

My gripe here is that this post has to exist at all. Everyone should know this, it is fundamental to have collections and operate on the collection - not using indices into collections1. IMO, this should be taught from day 1.." -- via http://trey-jackson.blogspot.com/2008/07/forcing-abstraction.html