In reply to: A practical introduction to functional programming Ignore all that. Functional code is characterised by one thing: the absence of side effects. It doesn’t rely on data outside the current function, and it doesn’t change data that exists outside the current function. Every o... eli.li

@mdhughes you are totally right -- I am a dork for functional programming (weird for someone who, until very recently, wrote mostly PHP). What I appriciated about this article, though, is that she doesn't get bogged down in a specific language's features. I think that the author does a really solid job explaining the core concept of functional programmnig in a conscise way.