I'm learning Clojure, and I find difficult to understand *where* a specific 
compiler error happens:


java.lang.ClassCastException: java.lang.Long cannot be cast to 
clojure.lang.IPersistentCollection, compiling:(fwpd/core.clj:100:1)


Line 100 is just:


(fib-seq3 5)


So it says nothing, because in fact the error is in the fib-seq3 function 
(parameters to a "conj" call are inverted, see below).


Is this normal? No way to know where an error is???


Just for reference, here's the code (again, *I know where the error is*; I 
just don't understand how was I supposed to find it, given that the message 
doesn't tell me at which line it happens):


(defn fib-seq3
  ([to]
   (fib-seq3 [] 0 1 0 to))
  ([coll a b k to]
    (if (= k to)
      coll
      (fib-seq3 (conj b coll) b (+ a b) (inc k) to)))
(fib-seq3 5)



Thank you!


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