Tail call optimisation at Raganwald

I command all of my students reading this to go and read this piece on tail call optimisation. If you’re anything like me, you’ll need to read it at least twice, write out the ruby examples by hand so they actually enter your brain (maybe I just needed more coffee), and follow many of the links for further explanation. It will be well worth it. This man has intelligent things to say, with which it is worth being familiar, if not intimate.