On Sun, May 19, 2013 at 4:54 PM, Jim - FooBar(); <jimpil1...@gmail.com>wrote:
> ha! you cheated with iterate... > > try this which is closer to the example... > > (first (filter odd? (map #(do (println "realized " %) %) [2 4 6 7 8 9]))) > realized 2 > realized 4 > realized 6 > realized 7 > realized 8 > realized 9 > 7 > > Jim > => (some #(when (odd? %) %) (map #(do (println "realized" %) %) [2 4 6 7 8 9])) realized 2 realized 4 realized 6 realized 7 realized 8 realized 9 7 ;) In fact, just calling 'first' on a mapped sequence gives the same behaviour: => (first (map #(do (println "realized" %) %) [2 4 6 7 8 9])) realized 2 realized 4 realized 6 realized 7 realized 8 realized 9 2 That said, 'some' does avoid realizing the first 32 elements if it's a vec. I still don't think you should care about that though - that's kind of the point of laziness, to be able to use map/filter etc without caring about how much is realized. Jonathan -- -- 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/groups/opt_out.