I took great interest in Sylvain Zimmer’s optimized version of Prototype’s $$
function, since I’ve been working on something very similar recently. Sylvain’s version uses more workmanlike string parsing; mine uses XPath. Each approach has its strengths and weaknesses.
Enchantment Under The Sea Dance Revisited
Wow, I wish this had been my idea. There are a couple places where things don’t line up very well, but Gale & Zemeckis seemed focused on preserving the space-time continuum.