title: What does "#'symbol" notation mean in clojure?
body: <p>I'm learning clojure on Heroku using <a href="https://devcenter.heroku.com/articles/clojure-web-application" rel="noreferrer">this</a> tutorial. I've come across the same thing in other tutorials, as well.</p>
  
  <p>Anyway, using the jetty adapter in ring, you have something like this:</p>
  
  <pre><code>(defroutes routes 
    ...)
  
  (defn start []
    (ring/run-jetty #'routes {:port 8080 :join? false}))
  </code></pre>
  
  <p>I don't understand what <code>#'routes</code> means. If I replace it with just <code>routes</code> it seems to work fine. What does the <code>#'symbol</code> notation mean? It's been very difficult to research.</p>