How to implement a programming language
I wrote a tutorial on how to implement a programming language in JavaScript. It got quite involved, and it took embarrassingly long to write. I wanted to write only about parsing, after a discussion with my dad about this problem; but once I had a parser I thought I'd add in a simple interpreter and once that was in place, I thought I'd turn it into continuation-passing style to show how we can workaround the lack of tail call optimization in JavaScript. But this opened the opportunity to talk about continuations. And of course, it was too slow so I thought I'd discuss compiling as well.
Long story short: I describe how to implement a non-trivial programming language. We get to a language that has decent performance, can interface easily with JavaScript and can offer first class continuations. To hell with the callback hell!
Read on and let me know what you think.