Last + butlast? On Tuesday, May 6, 2014, Roelof Wobben <rwob...@hotmail.com> wrote:
> Found the answer : > > (defn secondlast [coll] > (let [number 0 > counter (- (count coll)2) ] > (loop [coll coll counter counter number number] > (if (= counter number) > (first coll) > (recur (next coll) counter (+ number 1)))))) > > and without the loop there will be : (first(drop(reverse v)) > > Roelof > > > Op dinsdag 6 mei 2014 13:36:53 UTC+2 schreef Roelof Wobben: >> >> As far as I understand recur is going back to the loop so number is >> never going back to 0 >> but I see the problem (-(count coll)2 is changing it value and that >> schould not happen. >> So I think I have to set the initial value of counter in the let. >> >> what schould happen is this >> >> coll number counter >> 1) [1,2,3.4.5) 0 3 >> 2) [2.3,4,5] 1 3 >> 3) [3,4,5] 2 3 >> 4) [ 4,5] 3 3 >> >> so the (first coll) is executed which is 4. >> >> Am I at the right track now. >> >> >> >> Roelof >> >> -- > 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<javascript:_e(%7B%7D,'cvml','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<javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@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<javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@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.
