Were you in #clojure earlier? This came up there and pjstadig and I raced to implement "domap" and then slashus2 pointed out there was no need for it to be a macro.
http://gist.github.com/89249 (defn domap "A map for side-effects. The argument order is the same as map, but unlike map the function results are not retained. Takes a function followed by any number of collections and applies the function to the first item in each coll, then the second etc. Returns nil." [fn & colls] (let [num-colls (count colls)] (doseq [args (partition num-colls (apply interleave colls))] (apply fn args)))) On Apr 2, 10:20 pm, Daniel Jomphe <danieljom...@gmail.com> wrote: > Daniel Jomphe wrote: > > Basically, since your map wasn't needed, it wasn't "realized"/ > > executed. Laziness. > > Better said: > > Basically, since your map's results weren't used, it wasn't > "realized"/ > evaluated. That's why you didn't see your expected side effects. > Laziness. --~--~---------~--~----~------------~-------~--~----~ 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 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 -~----------~----~----~----~------~----~------~--~---
