Changes for clojure.contrib.cond/cond-let

llasram on Thu, 15 Sep 2011
(cond-let [[a b c]]
  nil     (assert false)
  [5 2 3] (+ a b c))
;; => 10
boxie on Fri, 05 Nov 2010
(cond-let
 [[a b c]] [5 2 3]
 (< a b c))