Data update

Task/Leap-year/YAMLScript/leap-year.ys

@@ -0,0 +1,16 @@
+!yamlscript/v0
+
+defn main(year):
+  say: "$year is $when-not(leap-year(year) 'not ')a leap year."
+
+# Either one works:
+
+defn leap-year(year):
+  ((year % 4) == 0) && (((year % 100) > 0) || ((year % 100) == 0))
+
+defn leap-year(year):
+  and:
+    zero?: (year % 4)
+    or:
+      pos?: (year % 100)
+      zero?: (year % 400)