AFAICT there is consistently one extra call, which seems to suggest an off-by-one error in the IReduce implementation of Iterate.
;; 1.6 user=> (take 11 (iterate (fn [a] (prn (str "PR" a)) (inc a)) 1)) "PR1" "PR2" "PR3" "PR4" "PR5" "PR6" "PR7" "PR8" "PR9" "PR10" (1 2 3 4 5 6 7 8 9 10 ...) ;; 1.7.0-alpha6 user=> (take 11 (iterate (fn [a] (prn (str "PR" a)) (inc a)) 1)) "PR1" "PR2" "PR3" "PR4" "PR5" "PR6" "PR7" "PR8" "PR9" "PR10" "PR11" (1 2 3 4 5 6 7 8 9 10 ...) Thanks, Ambrose On Wed, Apr 1, 2015 at 8:50 PM, Matching Socks <phill.w...@gmail.com> wrote: > Ambrose, does that "iterate" result arise from chunking? "iterate" is > advertised as producing an infinite lazy sequence. While a suddenly > chunking "iterate" will no doubt smoke out some cases like this, doesn't it > seem that they are abuses? It's not quite spot-on to employ "take" or > "take-while" outside the "iterate" as a loop-ending nanny for sequences > that could not genuinely be infinite. The "take" should be concerned with > what the consumer wants to consume, not preoccupied with what the producer > will be able to produce. > > -- > 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.
