Returns the number of items in the collection. (count nil) returns
0. Also works on strings, arrays, and Java Collections and Maps
Source
(defncount"Returns the number of items in the collection. (count nil) returns
0. Also works on strings, arrays, and Java Collections and Maps"{:inline(fn[x] `(.clojure.lang.RT (count ~x))):added"1.0"}[coll](clojure.lang.RT/countcoll))