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 > <javascript:>> 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 <javascript:> > 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 <javascript:> > 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 <javascript:>. > 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.
