If you just want to reload the file do the first once and the second any time you want to reload. user=> (use '[clojure.tools.namespace.repl :only (refresh)])

If you just want to reload the file do the first once and the second any time you want to reload. user=> (use '[clojure.tools.namespace.repl :only (refresh)]) user=> (refresh) What is described in the article is a little more advanced and has to do with how to control how your reloaded code deals with the old state.