(filter (comp not nit?) [nil 2 3 nil false true 4]) -> (remove nil? [...])
On Fri, Oct 26, 2012 at 12:53 PM, kevin roth <kevin.c.zucker...@gmail.com> wrote: > Be careful with the (filter identity ...) which will also remove "falses" > from seqs. > (filter identity [nil 2 3 nil false true 4]) > => (2 3 true 4) > Since (identity false) and (identity nil) returns respectively false and nil > they are BOTH rejected by filter. > > This could do the trick: > (filter (comp not nit?) [nil 2 3 nil false true 4]) > => (2 3 false true 4) > > On Wednesday, November 17, 2010 2:37:16 AM UTC+1, Luc wrote: >> >> user=> (time (filter identity [ nil 1 2 nil 4])) >> "Elapsed time: 0.053219 msecs" >> (1 2 4) >> >> user=> (time (remove nil? [ nil 1 2 nil 4])) >> "Elapsed time: 0.065092 msecs" >> (1 2 4) >> >> Choose the flavor your prefer... >> >> Luc P. >> >> Glen Rubin <rubi...@gmail.com> wrote .. >> > What is the fastest way to remove nils from a sequence? >> > >> > I usually use the filter function, but I see there are other functions >> > like remove that should also do the trick. >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups "Clojure" group. >> > To post to this group, send email to clo...@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+u...@googlegroups.com >> > For more options, visit this group at >> > http://groups.google.com/group/clojure?hl=en >> Luc P. >> >> ================ >> The rabid Muppet > > -- > 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 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
