A Pint-Sized Earley Parser

I like Loop's tutorial: http://loup-vaillant.fr/tutorials/earley-parsing/

I lived for years in Earley. That's totally not confusing.

Cache invalidation and naming: the two hard problems in computer science...

My first use of the marpa parser was one of those rare occasions where you are pleasantly stunned at the quality, speed, and flexibility of a library.