On Dec 5, 9:52 pm, HB <hubaghd...@gmail.com> wrote: > Hi, > I'm trying to write a function that calculates the length of a list: > > (defn list-length [col] > (if col > (+ 1 (list-length(rest col))) > 0)) > > (list-length '(Java, Clojure, Scala)) > > Upon running it in the REPL, I got the error: > java.lang.StackOverflowError (test.clj:3) > > What is going wrong?
Unlike Common Lisp, the empty list is not a false value in Clojure, so your condition is always true. If you change your test to (if (empty? col) ... ), all should be good. Cheers, Danny. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
