I wonder why I haven't seen this book before? It felt like seeing pictures from my childhood, since when I studied long ago Lisp was the first language taught.

I wonder why I haven't seen this book before? It felt like seeing pictures from my childhood, since when I studied long ago Lisp was the first language taught. I've written partial implementation of lisps a couple of times, it isn't hard -- and quite beautiful. (It's a pity it isn't using the new Perl 6/Rakudo parsing stuff, which is probably too new.)