Binary digits: Difference between revisions

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@@ Line 1,451: / Line 1,451: @@
 =={{header|JavaScript}}==
+===ES5===
 <lang javascript>function toBinary(number) {
   return new Number(number).toString(2);
@@ Line 1,459: / Line 1,460: @@
 }</lang>
+===ES6===
-Or, as a functional expression, rather than a statement:
+The simplest showBin (or showIntAtBase), using default digit characters, would use JavaScript's standard String.toString(base):
-<lang JavaScript>console.log(
+<lang JavaScript>(() => {
+    // showIntAtBase_ :: // Int -> Int -> String
-    [5, 50, 9000].map(function (n) {
-        return (n).toString(2);
+    const showIntAtBase_ = (base, n) => (n)
-    }).join('\n')
+        .toString(base);
+    // showBin :: Int -> String
-)</lang>
+    const showBin = n => showIntAtBase_(2, n);
+    // GENERIC FUNCTIONS FOR TEST ---------------------------------------------
-Output:
-<pre>101
+    // intercalate :: String -> [a] -> String
+    const intercalate = (s, xs) => xs.join(s);
-10001100101000</pre>
+    // map :: (a -> b) -> [a] -> [b]
+    const map = (f, xs) => xs.map(f);
+    // unlines :: [String] -> String
+    const unlines = xs => xs.join('\n');
+    // show :: a -> String
+    const show = x => JSON.stringify(x);
+    // TEST -------------------------------------------------------------------
+    return unlines(map(
+        n => intercalate(' -> ', [show(n), showBin(n)]),
+        [5, 50, 9000]
+    ));
+})();</lang>
+{{Out}}
+<pre>5 -> 101
+-> 110010
+-> 10001100101000</pre>
 =={{header|Joy}}==