> This is why flatten's behavior was considered a bug. In Clojure, an > empty sequence is equivalent to nil, not to '(nil).
This does not comport with the various differences enumerated @ http://clojure.org/lisps Perhaps they need to be changed. RH care to weigh in on this? which says: "() is not the same as nil" and this one: "In Clojure nil means 'nothing'. It signifies the absence of a value, of any type, and is not specific to lists or sequences." and probably this one too: "Empty collections are distinct from nil. Clojure does not equate nil and '()." and this one as well: "...There is no such thing as an empty sequence. Either there is a sequence (with elements) or there isn't (nil)..." add this to the pile: "...The Clojure return values differ in not returning empty collections, but rather a sequence or not...." On Dec 16, 11:28 am, "J. McConnell" <jdo...@gmail.com> wrote: > On Tue, Dec 16, 2008 at 11:23 AM, Randall R Schulz <rsch...@sonic.net> wrote: > > > > > It is also the case that empty lists are self-evaluating: > > > user=> ''() > > (quote ()) > > > user=> '() > > () > > > user=> () > > () > > Ahhh, good to know. Thanks! > > - J. --~--~---------~--~----~------------~-------~--~----~ 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 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 -~----------~----~----~----~------~----~------~--~---
