I updated the example with a larger replacement sequence to hopefully prevent that confusion in the future.
You can also use srange to eliminate subsequences, e.g.: (setval (srange 4 7) nil [:a :b :c :d :e :f :g :h :i]) => [:a :b :c :d :h :i] And the navigator to prepend to a sequence is just selecting the empty subsequence at the beginning: (def BEGINNING (srange 0 0)) (setval BEGINNING [:a :b] '(1 2 3)) => (:a :b 1 2 3) On Fri, Jan 29, 2016 at 10:27 AM, Alan Thompson <clooj...@gmail.com> wrote: > Oh! I never even suspected that! So you are replacing a length-2 > subsequence with a length-3 subsequence. Very flexible. > > It might be useful to point out that feature in the docs. :) > > Alan > > > On Thu, Jan 28, 2016 at 10:49 PM, Nathan Marz <nat...@nathanmarz.com> > wrote: > >> Both of those examples use half-open intervals :) The first selects the >> subsequence with indices 1,2,3, and the second selects the subsequence with >> indices 2,3. You can see in the second example that [2 3] in the overall >> sequence is replaced by [-1 -1 -1]. >> >> On Thu, Jan 28, 2016 at 9:10 PM, Alan Thompson <clooj...@gmail.com> >> wrote: >> >>> Looks great, Nathan. I also highly enjoyed your recent interview on the >>> Cognitect podcast <http://blog.cognitect.com/cognicast/095>. >>> >>> One quick question: In the first example below from the README >>> (verified at the repl), it seems that the (srange ...) function >>> sometimes behaves as a half-open interval [1,4) like the (range ...) >>> function in Clojure). However, in the 2nd example it seems to behave >>> as a closed interval [2,4]. Is there an easy way of knowing which behavior >>> applies in different situations? >>> >>> Thanks, >>> Alan >>> >>> >>> Here's how to increment all the odd numbers between indexes 1 >>> (inclusive) and 4 (exclusive): >>> >>> user> (transform [(srange 1 4) ALL odd?] inc [0 1 2 3 4 5 6 7]) >>> >>> [0 2 2 4 4 5 6 7] >>> >>> Here's how to replace the subsequence from index 2 to 4 with [-1 -1 -1]: >>> >>> user> (setval (srange 2 4) [-1 -1 -1] [0 1 2 3 4 5 6 7 8 9]) >>> >>> [0 1 -1 -1 -1 4 5 6 7 8 9] >>> >>> >>> >>> >>> >>> >>> On Thu, Jan 28, 2016 at 4:11 PM, Jean Baro <jfb...@gmail.com> wrote: >>> >>>> >>>> Congratulations for the spectacular work and thanks for sharing this >>>> with the world. >>>> >>>> -- >>>> 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 a topic in the >>> Google Groups "Clojure" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/clojure/XePZ-WSviso/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> clojure+unsubscr...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> Twitter: @nathanmarz >> http://nathanmarz.com >> >> -- >> 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 a topic in the > Google Groups "Clojure" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/clojure/XePZ-WSviso/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- Twitter: @nathanmarz http://nathanmarz.com -- You received this message because you are subscribed to the Google Groups "Clojure" group. 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