Two thoughts: 1. Use an atom.
2. Use loop instead of doseq, so you can maintain a bit of state as you go. -kt On Saturday, July 15, 2017 at 6:18:10 PM UTC-4, Kevin Kleinfelter wrote: > > How does one detect a change in a doseq? > > I'm trying to do what data processing people would call a control break in > a report. I'm printing account + fund names. My data is sorted by > account, so each row has a new fund, and accounts change less frequently. > I'd like to print a separator line when account changes. In a procedural > language, I'd set up an old-account variable, and I'd print the separator > line when account != old-account. > > (doseq [h list-of-account-fund-pairs] > (let [account (first h) > fund (second h) > * (if changed-account)* > (println "-----------") > (println account fund) > > Thanks! > -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
