Status Updates From JavaScript: The Good Parts

So far I'm liking this book, but like many other reviewers have said, it is quite dense. In the regex section, lookaheads are discounted. They can, in fact, be useful. A previous coworker of mine had pioneered the use of them in the parsing of various EDI headers. I think an example or at least explanation of opinion would have been useful here.

Memoization & Prototypal vs Pseudoclassical Inheritance