Changes for clojure.core/empty

pmbauer on Tue, 19 Nov 2013
user=> (empty [1 2 3])
[]
user=> (empty (list 1 2 3))
()
user=> (map empty [[\a \b] {1 2} (range 4)])
([] {} ())
user=> (swap! (atom (range 10)) empty)      
()
steloflute on Wed, 12 Sep 2012
user=> (empty [1 2 3])
[]
user=> (empty (list 1 2 3))
()
user=> (map empty [[\a \b] {1 2} (range 4)])
([] {} ())
jafingerhut on Wed, 28 Mar 2012
user=> (empty [1 2 3])
[]
user=> (empty (list 1 2 3))
()
user=> (map #(empty %) [[\a \b] {1 2} (range 4)])
([] {} ())
OnesimusUnbound on Wed, 03 Aug 2011
user=> (empty [1 2 3])
[]
user=> (empty (list 1 2 3))
()
user=> (map #(empty %) [[\a \b] {1 2} (range 4)])
([] {} ())
gstamp on Wed, 28 Jul 2010
user=> (empty [1 2 3])
[]
user=> (empty (list 1 2 3))
()