The empty list () is an object, and objects are truthy. `seq` on any empty collection is defined to return nil. So your definition:
(deftype Foo [] Seqable (seq [this] ())) should return nil instead of the empty list. `(next x)` is equivalent to `(seq (rest x))` -S -- 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