I wrote a post on learning the prototype J interpreter that was written by Arthur Whitney: http://bollu.github.io/#incunabulum-for-the-21st-century-making-the-j

I wrote a post on learning the prototype J interpreter that was written by Arthur Whitney: http://bollu.github.io/#incunabulum-for-the-21st-century-making-the-j-interpreter-compile-in-2020 http://bollu.github.io/#incunabulum-for-the-21st-century-mak... It's an enjoyable codebase to stare at and figure out