I'm just trying to get Clojure set up. Here is some code that I am trying to run in lein repl:
(def numbers (into [] (range 0 100)))
(sum numbers)
But I get this error:
CompilerException java.lang.RuntimeException: Unable to resolve symbol: sum in this context, compiling:(NO_SOURCE_PATH:1:1)
I don't know what this means. Is my installation wrong?