Merge pull request #294 from sogaiu/add-count-examples

Add examples for count

Author: sogaiu

examples/count.janet

@@ -0,0 +1,9 @@
+# total of values for which pos? results in truthy value
+(count pos? [math/-inf -1 0 1 math/pi]) # -> 2
+
+# multiple data structures can be handled
+(count (fn [x y] (neg? (+ x y))) [-1 -1 -1] [-1 0 1]) # -> 2
+
+# predicate may not be applied to all values (e.g. 99)
+(count |(pos? (* $0 $1 $2)) [-3 -2] [-1 0 99] [3 2]) # -> 1
+