I am trying to learn clojure by learning the programing by example
open wiki book. For an excercise demonstrating iteration they give
the following example:
(defn factorial
([n]
(factorial n 1))
([n acc]
(if (= n 0) acc
(recur (dec n) (* acc n)))))
first I don't understand how acc ever gets an initial value?
also the arguments to the function are a list and not a vector?
why is the vector [n acc] on a line by itself?
This function is very confusing to me!! thanks for any help!!
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