Here's an example. user=> (if (seq []) (println 1)) nil user=> (if (seq [1]) (println 1)) 1 nil
11.05.2013, 18:40, "Kelker Ryan" > (seq coll) will return a true value if the collection isn't empty. It will > also return nil (false) if it is. > > 11.05.2013, 17:37, "Nico Balestra" <nicobales...@gmail.com>: > >> I'm not sure this question has been asked already, but I really want to >> know the "principle" behind (not (empty? coll)) not being idiomatic. >> >> I find it much more readable than (seq coll) and I don't understand why >> (empty?) exists if it's not idiomatic. But my real doubt is: >> >> What's the "idiom" in (seq coll)? >> >> Thanks and sorry if the question sounds a bit pedantic :) >> >> Nico >> >> "It is better to have 100 functions operate on one data structure than to >> have 10 functions operate on 10 data structures" - A.J. Perlis >> >> -- >> -- >> 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. -- -- 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.
