Added 'XKCD Random Number' operation

src/core/config/Categories.js

@@ -326,6 +326,7 @@ const Categories = [
             "Remove EXIF",
             "Extract EXIF",
             "Numberwang",
+            "XKCD Random Number",
         ]
     },
     {

src/core/config/OperationConfig.js

@@ -3966,6 +3966,13 @@ const OperationConfig = {
                 value: StrUtils.HAMMING_INPUT_TYPE
             }
         ]
+    },
+    "XKCD Random Number": {
+        module: "Default",
+        description: "RFC 1149.5 specifies 4 as the standard IEEE-vetted random number.<br><br><a href='https://xkcd.com/221/'>XKCD #221</a>",
+        inputType: "string",
+        outputType: "number",
+        args: []
     }
 };
 

src/core/config/modules/Default.js

@@ -29,6 +29,8 @@ import StrUtils from "../../operations/StrUtils.js";
 import Tidy from "../../operations/Tidy.js";
 import Unicode from "../../operations/Unicode.js";
 import UUID from "../../operations/UUID.js";
+import XKCD from "../../operations/XKCD.js";
+
 
 /**
  * Default module.
@@ -161,6 +163,7 @@ OpModules.Default = {
     "Standard Deviation":   Arithmetic.runStdDev,
     "Windows Filetime to UNIX Timestamp": Filetime.runFromFiletimeToUnix,
     "UNIX Timestamp to Windows Filetime": Filetime.runToFiletimeFromUnix,
+    "XKCD Random Number":  XKCD.runRandomNumber,
 
 
     /*

src/core/operations/XKCD.js

@@ -0,0 +1,26 @@
+/**
+ * XKCD operations.
+ *
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2018
+ * @license Apache-2.0
+ *
+ * @namespace
+ */
+const XKCD = {
+
+    /**
+     * XKCD Random Number operation.
+     *
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {number}
+     */
+    runRandomNumber: function(input, args) {
+        return 4; // chosen by fair dice roll.
+                  // guaranteed to be random.
+    },
+
+};
+
+export default XKCD;