Clojure, like many programming languages, has a lot of syntax that is based on non alpha-numeric characters. For instance, #"" is different from “”. How do you search for those things using Google? If you don’t know what it’s called, or what it’s doing, there’s no way to search, because Google removes most punctuation.
This blog post is kind of a guide to those characters. If you don’t know what some character means in Clojure code, search this page for it and it will help you.