also do note that clojure.core/run! is designed for two-arg map when it's only run for side effects, and clojure.core/doseq is designed for nested side-effecting iteration
On Thu, Feb 7, 2019 at 3:33 AM Pierpaolo Tofani <pierpaolo.tof...@gmail.com> wrote: > > Thanks ! Your diagnosis is correct. With two dorun works fine. > > Il giorno giovedì 7 febbraio 2019 12:19:40 UTC+1, Orestis Markou ha scritto: >> >> Without having ran your code, it seems that the inner map is not wrapped in >> a doall, so while the outer lazy-seq is forced, the inner is not. >> >> This might be of interest to you: >> http://clojure-doc.org/articles/language/laziness.html >> >> If you only want to do map for side effects, you could use dorun instead of >> doall. >> >> On 7 Feb 2019, at 12:04 PM, Pierpaolo Tofani <pierpaol...@gmail.com> wrote: >> >> Hi >> i am new in clojure sorry. >> In the snippet of code i used two map functions only to produce side effects >> on two ref. >> Even using doall no affect is produced on ref aaa and zzz, seems that the >> sequence is still lazy. >> But if i remove the final :done , and the repl show me the sequence produced >> (that i don't care) the ref aaa and zzz are affected.Thanks in advance. >> PS The two map are in effect doing a for. >> >> (def aaa (ref 0)) >> (def zzz (ref 0)) >> (def s1 [1 2 3 4 5]) >> (def s2 [1 2 3 4 5]) >> (defn make-side [] >> (do >> (doall >> (map >> (fn [x] >> (map >> (fn [y] >> (dosync >> (alter aaa inc) >> (alter zzz dec) >> ) >> ) >> s2)) >> s1) >> ) >> :done >> ) >> ) >> >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clo...@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+u...@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+u...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> >> > -- > 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. -- 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.
