Hi, On Aug 10, 3:48 pm, David Sletten <da...@bosatsu.net> wrote:
> Notice how Clojure returns two different values here. Other Lisps (such as > Common Lisp) define FIRST/REST of the empty list to both be NIL (i.e., the > empty list itself). So it is common in other Lisps to test for the end of a > list using the equivalent of 'nil?', namely the function NULL. But in Clojure > if we are traversing a list and looking for the end, the correct function is > 'empty?'. > (nil? '()) => false > (empty? '()) => true The idiomatic way to test for emptiness is actually to use seq. empty? is actually defined as (empty? x) := (not (seq x)). Sincerely Meikel -- 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
