(take-while seq (iterate rest [1 2 3 4]))
On Fri, Nov 29, 2013 at 5:17 PM, Paul Butcher <p...@paulbutcher.com> wrote: > I fear that I'm missing something obvious here, so I'm getting ready to > kick myself. I'm looking for an equivalent of Scala's "tails" method: > > scala> List(1, 2, 3, 4).tails.toList > res0: List[List[Int]] = List(List(1, 2, 3, 4), List(2, 3, 4), List(3, 4), > List(4), List()) > > > But I'm damned if I can find anything in the standard library. Clearly I > can define it myself: > > user=> (defn tails [coll] > #_=> (lazy-seq > #_=> (when-let [s (seq coll)] > #_=> (cons s (tails (rest s)))))) > #'user/tails > user=> (tails [1 2 3 4]) > ((1 2 3 4) (2 3 4) (3 4) (4)) > > > But I can't believe that an equivalent isn't already in there somewhere? > Thanks in advance to anyone who points me in the right direction. > > -- > paul.butcher->msgCount++ > > Silverstone, Brands Hatch, Donington Park... > Who says I have a one track mind? > > http://www.paulbutcher.com/ > LinkedIn: http://www.linkedin.com/in/paulbutcher > Skype: paulrabutcher > > > > > -- > -- > 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/groups/opt_out. > -- -- 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/groups/opt_out.
