newbie questions about evaluation and -main

[Brian Craft]

I started with a db example and dropped this into the core.clj of an 'app' project, just before the defn for -main.

(sql/with-connection db

  (sql/with-query-results rs ["select * from foo limit 3"]

    (dorun (map #(println %) rs))))

On "lein run" this prints three rows, but prints them twice. If I move this inside the defn for -main, it prints them once.

I'm not sure what's going on. Is core.clj is being evaluated twice on the way up?