Your analysis is correct. Note that adding a doall fixes the problem user=> (def tl (reduce #(doall (concat %1 [%2])) [] (range 4000))) #'user/tl user=> (last tl) 3999
efficiency notwithstanding. On Mar 28, 8:59 am, jim <jim.d...@gmail.com> wrote: > Hey Rich, > > I found an interesting way to blow up the stack. > > user=> (def tl (reduce #(concat %1 [%2]) [] (range 3500))) > #'user/tl > user=> (last tl) > java.lang.StackOverflowError (NO_SOURCE_FILE:0) > > The 3500 is probably specific to my environment. I'm assuming that > all the concats get deferred until needed and that the nested calls > blow up the stack. > > Also, this works > > user=> (def tl (reduce #(conj %1 %2) [] (range 4000))) > #'user/tl > user=> (last tl) > 3999 > > Jim --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
