[cominatchu]

This comment thread reminds me a bit of "The Emperor's new clothes". I think the code for sieve (even though I understood what it did) is way too unnecessarily confusing and I would not want to see it in a project I'm on.

However, I do appreciate the usefulness of lazy evaluation. Still, I think this documentation could benefit by not making outlandish claims ("it will change the way you think") and just saying the author has implemented lazy evaluation in javascript (and maybe link to the wikipedia article on lazy evaluation and this stack overflow to explain why it's useful: http://stackoverflow.com/questions/2151226/what-are-the-adva...)

[swannodette]

If your project team has people comfortable with functional programming - there's absolutely nothing wrong with that code.

As far as changing the way you think, it certainly came as a shock for me when I encountered it years ago in SICP and I'm still enjoying the benefits of lazy sequences in Clojure and ClojureScript.