Some lazy lists are chunked for efficiency, which means Clojure will read-ahead and evaluate a number of elements in advance. Often the outputs from the various list handling functions are chunked (e.g. map, range, etc.), while creating a seq explicitly with lazy-seq will not be chunked.
- James On 18 October 2014 18:28, shahrdad shadab <[email protected]> wrote: > Greeting everyone, > > It might be stupid question but I expect > > (first (map (fn [_] (println "executed")) [1 2 3 4])) > > prints only once (realizing only first element in lazy seq returned by > map) but it prints four times. > Can some one shed a light why? > > Thanks in advance > Best regards > Shahrdda > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to [email protected] > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > [email protected] > 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 [email protected]. > 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 [email protected] Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to [email protected] 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
