The indentation was correct by got messed up when I copying the code. This is how I interpret the function: 'expr' is only returned if (coll? expr) returns 'false', with is not the case with an argument such as '(+ 2 4). Next, this expression is destructured in the 'let' and 'prefix- >postfix called again:
[ (prefix->postfix 2) (prefix->postfix 4) +] As 2 and 4 are both not a collection, their values are just returned. This should lead to this final result: [2 4 +] However, no vector is returned, just the initial argument to the function. I really want to understand what I did wrong here :-) Stefan On Sep 9, 9:08 pm, Nicolas Oury <nicolas.o...@gmail.com> wrote: > Yes. > > Have someone (for example your editor), do your indentation for you. > By typing on tab on a good editor, you would have has: > (defn prefix->postfix [expr] > (if (coll? expr) > (let [ [op arg1 arg2] expr] > [ (prefix->postfix arg1) (prefix->postfix arg2) op])) > expr) > > which is easier to diagnose. (At least for me) > > Have fun with recursion, > > Nicolas. -- 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
