Hi Glen, Finding the *first* index isn't very Clojurish, what you want is to find *all* the indexes, lazily. Then if you want the first one, just call first.
(use '[clojure.contrib.seq-utils :only (positions)]) (positions #{99} [0 99 3334 53 2 5 99 2 55 63]) -> (1 6) Cheers, Stu > I have a vector of numbers > > [0 99 3334 53 2 5 99 2 55 63] > > I'd like to find the first index of a particular value. For example > if the value was 99 then I want to return 1, b/c the index of 99 is > 1. I can do this with a loop/recur structure comparing each value in > the list to my desired value, however am wondering if there isn't a > built-in for doing so?? thanks again! > > -- > 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 -- 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