Still no pedagogical value. Any smart undergrad can pick up how to write a parser with a little background reading and a couple hours. The trick is that you spe

Still no pedagogical value. Any smart undergrad can pick up how to write a parser with a little background reading and a couple hours. The trick is that you spend the rest of your life fixing maddening corner-case bugs in the thing. Parsers, from a practical perspective, are child's play for people who seek to eventually master a compiler.