This article is an interactive version of the first part of this paper: Parsing with derivatives - a Functional Pearl - the part that shows how to implement a r

This article is an interactive version of the first part of this paper: Parsing with derivatives - a Functional Pearl - the part that shows how to implement a regular expression matcher in a few lines of code using a concept from 1964 named Brzozowski's derivative. In this article, we are going to implement a regular expression matcher in clojure using Brzozowski's derivative. The theoretical part is a bit abstract but it worths making the effort as the implementation is really elegant.