Clojure web apps: Zero to 'Hello World' on Heroku in Clojure in 15 minutes. I’ve been talking a lot about Clojure lately, but the pool of people who want to listen is pretty small. I know, I know, it’s pretty different, but I promise it’s really cool – maybe even better than the languages you already know – once you get to know it. So today I want to step back to the very basics by outlining how t