Day of the week: Difference between revisions

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 =={{header|JavaScript}}==
-===Iterative===
+===ES5===
+====Iteration====
 <lang javascript>for (var year = 2008; year <= 2121; year++){
     var xmas = new Date(year, 11, 25)
@@ Line 1,561: / Line 1,561: @@
 </pre>
+====Functional composition====
-===Functional (ES5)===
 <lang JavaScript>(function () {
@@ Line 1,589: / Line 1,588: @@
 <pre>[2011, 2016, 2022, 2033, 2039, 2044, 2050, 2061, 2067,
 , 2078, 2089, 2095, 2101, 2107, 2112, 2118]</pre>
+===ES6===
+<lang JavaScript>(() => {
+    'use strict';
+    // xmasIsSunday :: Integer -> Bool
+    const xmasIsSunday = year => (new Date(year, 11, 25))
+            .getDay() === 0;
+    // range :: Int -> Int -> [Int]
+    const range = (m, n) =>
+        Array.from({
+            length: Math.floor(n - m) + 1
+        }, (_, i) => m + i);
+    return range(2008, 2121)
+        .filter(xmasIsSunday);
+})();</lang>
+{{Out}}
+<lang JavaScript>[2011, 2016, 2022, 2033, 2039, 2044, 2050, 2061, 2067, 2072, 2078, 2089, 2095, 2101, 2107, 2112, 2118]</lang>
 =={{header|jq}}==