diff --git a/README.md b/README.md
index eb88d68c1..e0046efe5 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@
 
 ⚠️ **WARNING:** Snippets are not production ready.
 
-You can find a package with all the snippets on [npm](https://www.npmjs.com/package/30-seconds-of-code). 
+You can find a package with all the snippets on [npm](https://www.npmjs.com/package/30-seconds-of-code).
 
 ```
 npm install 30-seconds-of-code
@@ -118,7 +118,6 @@ average(1, 2, 3);
 * [`pull`](#pull)
 * [`pullAtIndex`](#pullatindex)
 * [`pullAtValue`](#pullatvalue)
-* [`quickSort`](#quicksort)
 * [`reducedFilter`](#reducedfilter)
 * [`remove`](#remove)
 * [`sample`](#sample)
@@ -144,7 +143,7 @@ average(1, 2, 3);
 
 * [`arrayToHtmlList`](#arraytohtmllist)
 * [`bottomVisible`](#bottomvisible)
-* [`copyToClipboard`](#copytoclipboard)
+* [`copyToClipboard`](#copytoclipboard-)
 * [`currentURL`](#currenturl)
 * [`detectDeviceType`](#detectdevicetype)
 * [`elementIsVisibleInViewport`](#elementisvisibleinviewport)
@@ -153,13 +152,12 @@ average(1, 2, 3);
 * [`hasClass`](#hasclass)
 * [`hide`](#hide)
 * [`httpsRedirect`](#httpsredirect)
-* [`onUserInputChange`](#onuserinputchange)
+* [`onUserInputChange`](#onuserinputchange-)
 * [`redirect`](#redirect)
-* [`runAsync`](#runasync)
+* [`runAsync`](#runasync-)
 * [`scrollToTop`](#scrolltotop)
 * [`setStyle`](#setstyle)
 * [`show`](#show)
-* [`speechSynthesis`](#speechsynthesis)
 * [`toggleClass`](#toggleclass)
 * [`UUIDGeneratorBrowser`](#uuidgeneratorbrowser)
 
@@ -172,7 +170,6 @@ average(1, 2, 3);
 
 * [`formatDuration`](#formatduration)
 * [`getDaysDiffBetweenDates`](#getdaysdiffbetweendates)
-* [`JSONToDate`](#jsontodate)
 * [`toEnglishDate`](#toenglishdate)
 * [`tomorrow`](#tomorrow)
 
@@ -211,21 +208,15 @@ average(1, 2, 3);
 
 * [`average`](#average)
 * [`clampNumber`](#clampnumber)
-* [`collatz`](#collatz)
 * [`digitize`](#digitize)
 * [`distance`](#distance)
-* [`elo`](#elo)
+* [`elo`](#elo-)
 * [`factorial`](#factorial)
-* [`factors`](#factors)
 * [`fibonacci`](#fibonacci)
-* [`fibonacciCountUntilNum`](#fibonaccicountuntilnum)
-* [`fibonacciUntilNum`](#fibonacciuntilnum)
 * [`gcd`](#gcd)
 * [`geometricProgression`](#geometricprogression)
 * [`hammingDistance`](#hammingdistance)
-* [`howManyTimes`](#howmanytimes)
 * [`inRange`](#inrange)
-* [`isArmstrongNumber`](#isarmstrongnumber)
 * [`isDivisible`](#isdivisible)
 * [`isEven`](#iseven)
 * [`isPrime`](#isprime)
@@ -238,7 +229,7 @@ average(1, 2, 3);
 * [`randomIntegerInRange`](#randomintegerinrange)
 * [`randomNumberInRange`](#randomnumberinrange)
 * [`round`](#round)
-* [`solveRPN`](#solverpn)
+* [`sdbm`](#sdbm)
 * [`standardDeviation`](#standarddeviation)
 * [`sum`](#sum)
 * [`sumPower`](#sumpower)
@@ -294,7 +285,6 @@ average(1, 2, 3);
 * [`mask`](#mask)
 * [`palindrome`](#palindrome)
 * [`pluralize`](#pluralize)
-* [`repeatString`](#repeatstring)
 * [`reverseString`](#reversestring)
 * [`sortCharactersInString`](#sortcharactersinstring)
 * [`splitLines`](#splitlines)
@@ -307,18 +297,12 @@ average(1, 2, 3);
 
 </details>
 
-### 🔧 Utility
+###  Type
 
 <details>
 <summary>View contents</summary>
 
-* [`cloneRegExp`](#cloneregexp)
-* [`coalesce`](#coalesce)
-* [`coalesceFactory`](#coalescefactory)
-* [`extendHex`](#extendhex)
 * [`getType`](#gettype)
-* [`getURLParameters`](#geturlparameters)
-* [`hexToRGB`](#hextorgb)
 * [`isArray`](#isarray)
 * [`isArrayLike`](#isarraylike)
 * [`isBoolean`](#isboolean)
@@ -330,10 +314,23 @@ average(1, 2, 3);
 * [`isString`](#isstring)
 * [`isSymbol`](#issymbol)
 * [`isValidJSON`](#isvalidjson)
+
+</details>
+
+### 🔧 Utility
+
+<details>
+<summary>View contents</summary>
+
+* [`cloneRegExp`](#cloneregexp)
+* [`coalesce`](#coalesce)
+* [`coalesceFactory`](#coalescefactory)
+* [`extendHex`](#extendhex)
+* [`getURLParameters`](#geturlparameters)
+* [`hexToRGB`](#hextorgb-)
 * [`prettyBytes`](#prettybytes)
 * [`randomHexColorCode`](#randomhexcolorcode)
 * [`RGBToHex`](#rgbtohex)
-* [`sdbm`](#sdbm)
 * [`timeTaken`](#timetaken)
 * [`toDecimalMark`](#todecimalmark)
 * [`toOrdinalSuffix`](#toordinalsuffix)
@@ -401,7 +398,7 @@ Pall(p1, p2, p3).then(console.log);
 
 ### flip
 
-Flip takes a function as an argument, then makes the first argument the last
+Flip takes a function as an argument, then makes the first argument the last.
 
 Return a closure that takes variadic inputs, and splices the last argument to make it the first argument before applying the rest.
 
@@ -563,7 +560,7 @@ Counts the occurrences of a value in an array.
 Use `Array.reduce()` to increment a counter each time you encounter the specific value inside the array.
 
 ```js
-const countOccurrences = (arr, value) => arr.reduce((a, v) => (v === value ? a + 1 : a + 0), 0);
+const countOccurrences = (arr, val) => arr.reduce((a, v) => (v === val ? a + 1 : a + 0), 0);
 ```
 
 <details>
@@ -769,7 +766,7 @@ filterNonUnique([1, 2, 2, 3, 4, 4, 5]); // [1,3,5]
 
 Flattens an array.
 
-Use a new array and concatenate it with the spread input array causing a shallow denesting of any contained arrays.
+Use a new array, `Array.concat()` and the spread operator (`...`) to cause a shallow denesting of any contained arrays.
 
 ```js
 const flatten = arr => [].concat(...arr);
@@ -916,7 +913,7 @@ initialize2DArray(2, 2, 0); // [[0,0], [0,0]]
 
 Initializes an array containing the numbers in the specified range where `start` and `end` are inclusive with there common difference `step`.
 
-Use `Array(Math.ceil((end+1-start)/step)` to create an array of the desired length(the amounts of elements is equal to `(end-start)/step` or `(end+1-start)/step` for inclusive end), `Array.map()` to fill with the desired values in a range.
+Use `Array.from(Math.ceil((end+1-start)/step))` to create an array of the desired length(the amounts of elements is equal to `(end-start)/step` or `(end+1-start)/step` for inclusive end), `Array.map()` to fill with the desired values in a range.
 You can omit `start` to use a default value of `0`.
 You can omit `step` to use a default value of `1`.
 
@@ -944,10 +941,10 @@ initializeArrayWithRange(9, 0, 2); // [0,2,4,6,8]
 Initializes and fills an array with the specified values.
 
 Use `Array(n)` to create an array of the desired length, `fill(v)` to fill it with the desired values.
-You can omit `value` to use a default value of `0`.
+You can omit `val` to use a default value of `0`.
 
 ```js
-const initializeArrayWithValues = (n, value = 0) => Array(n).fill(value);
+const initializeArrayWithValues = (n, val = 0) => Array(n).fill(val);
 ```
 
 <details>
@@ -1292,38 +1289,6 @@ let pulled = pullAtValue(myArray, ['b', 'd']); // myArray = [ 'a', 'c' ] , pulle
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### quickSort
-
-QuickSort an Array (ascending sort by default).
-
-Use recursion. 
-Use `Array.filter` and spread operator (`...`) to create an array that all elements with values less than the pivot come before the pivot, and all elements with values greater than the pivot come after it. 
-If the parameter `desc` is truthy, return array sorts in descending order.
-
-```js
-const quickSort = ([n, ...nums], desc) =>
-  isNaN(n)
-    ? []
-    : [
-        ...quickSort(nums.filter(v => (desc ? v > n : v <= n)), desc),
-        n,
-        ...quickSort(nums.filter(v => (!desc ? v > n : v <= n)), desc)
-      ];
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-quickSort([4, 1, 3, 2]); // [1,2,3,4]
-quickSort([4, 1, 3, 2], true); // [4,3,2,1]
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
 ### reducedFilter
 
 Filter an array of objects based on a condition while also filtering out unspecified keys.
@@ -1454,7 +1419,7 @@ sampleSize([1, 2, 3], 4); // [2,3,1]
 
 Randomizes the order of the values of an array, returning a new array.
 
-Uses the Fisher-Yates algorithm to reorder the elements of the array, based on the [Lodash implementation](https://github.com/lodash/lodash/blob/b2ea6b1cd251796dcb5f9700c4911a7b6223920b/shuffle.js), but as a pure function.
+Uses the [Fisher-Yates algorithm](https://github.com/chalarangelo/30-seconds-of-code#shuffle) to reorder the elements of the array.
 
 ```js
 const shuffle = ([...arr]) => {
@@ -1484,7 +1449,7 @@ shuffle(foo); // [2,3,1], foo = [1,2,3]
 
 Returns an array of elements that appear in both arrays.
 
-Use `filter()` to remove values that are not part of `values`, determined using `includes()`.
+Use `Array.filter()` to remove values that are not part of `values`, determined using `Array.includes()`.
 
 ```js
 const similarity = (arr, values) => arr.filter(v => values.includes(v));
@@ -1560,7 +1525,7 @@ symmetricDifference([1, 2, 3], [1, 2, 4]); // [3,4]
 
 Returns all elements in an array except for the first one.
 
-Return `arr.slice(1)` if the array's `length` is more than `1`, otherwise, return the whole array.
+Return `Array.slice(1)` if the array's `length` is more than `1`, otherwise, return the whole array.
 
 ```js
 const tail = arr => (arr.length > 1 ? arr.slice(1) : arr);
@@ -1774,7 +1739,7 @@ bottomVisible(); // true
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### copyToClipboard
+### copyToClipboard ![advanced](/advanced.svg)
 
 Copy a string to the clipboard. Only works as a result of user action (i.e. inside a `click` event listener).
 
@@ -2013,7 +1978,7 @@ httpsRedirect(); // If you are on http://mydomain.com, you are redirected to htt
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### onUserInputChange
+### onUserInputChange ![advanced](/advanced.svg)
 
 Run the callback whenever the user input type changes (`mouse` or `touch`). Useful for enabling/disabling code depending on the input device. This process is dynamic and works with hybrid devices (e.g. touchscreen laptops).
 
@@ -2076,7 +2041,7 @@ redirect('https://google.com');
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### runAsync
+### runAsync ![advanced](/advanced.svg)
 
 Runs a function in a separate thread by using a [Web Worker](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers), allowing long running functions to not block the UI.
 
@@ -2167,10 +2132,10 @@ scrollToTop();
 
 Sets the value of a CSS rule for the specified element.
 
-Use `element.style` to set the value of the CSS rule for the specified element to `value`.
+Use `element.style` to set the value of the CSS rule for the specified element to `val`.
 
 ```js
-const setStyle = (el, ruleName, value) => (el.style[ruleName] = value);
+const setStyle = (el, ruleName, val) => (el.style[ruleName] = val);
 ```
 
 <details>
@@ -2207,35 +2172,6 @@ show(document.querySelectorAll('img')); // Shows all <img> elements on the page
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### speechSynthesis
-
-Performs speech synthesis (experimental).
-
-Use `SpeechSynthesisUtterance.voice` and `window.speechSynthesis.getVoices()` to convert a message to speech.
-Use `window.speechSynthesis.speak()` to play the message.
-
-Learn more about the [SpeechSynthesisUtterance interface of the Web Speech API](https://developer.mozilla.org/en-US/docs/Web/API/SpeechSynthesisUtterance).
-
-```js
-const speechSynthesis = message => {
-  const msg = new SpeechSynthesisUtterance(message);
-  msg.voice = window.speechSynthesis.getVoices()[0];
-  window.speechSynthesis.speak(msg);
-};
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-speechSynthesis('Hello, World'); // // plays the message
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
 ### toggleClass
 
 Toggle a class for an element.
@@ -2347,31 +2283,6 @@ getDaysDiffBetweenDates(new Date('2017-12-13'), new Date('2017-12-22')); // 9
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### JSONToDate
-
-Converts a JSON object to a date.
-
-Use `Date()`, to convert dates in JSON format to readable format (`dd/mm/yyyy`).
-
-```js
-const JSONToDate = arr => {
-  const dt = new Date(parseInt(arr.toString().substr(6)));
-  return `${dt.getDate()}/${dt.getMonth() + 1}/${dt.getFullYear()}`;
-};
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-JSONToDate(/Date(1489525200000)/); // "14/3/2017"
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
 ### toEnglishDate
 
 Converts a date from American format to English format.
@@ -2405,7 +2316,7 @@ toEnglishDate('09/21/2010'); // '21/09/2010'
 ### tomorrow
 
 Results in a string representation of tomorrow's date.
-Use `new Date()` to get today's date, adding `86400000` of seconds to it(24 hours), using `toISOString` to convert Date object to string.
+Use `new Date()` to get today's date, adding `86400000` of seconds to it(24 hours), using `Date.toISOString()` to convert Date object to string.
 
 ```js
 const tomorrow = () => new Date(new Date().getTime() + 86400000).toISOString().split('T')[0];
@@ -2685,7 +2596,7 @@ async function sleepyWork() {
 
 Negates a predicate function.
 
-Take a predicate function and apply `not` to it with its arguments.
+Take a predicate function and apply the not operator (`!`) to it with its arguments.
 
 ```js
 const negate = func => (...args) => !func(...args);
@@ -2708,22 +2619,19 @@ negate(isOdd)(1); // false
 
 ### average
 
-Returns the average of an of two or more numbers/arrays.
+Returns the average of an of two or more numbers.
 
 Use `Array.reduce()` to add each value to an accumulator, initialized with a value of `0`, divide by the `length` of the array.
 
 ```js
-const average = (...arr) => {
-  const nums = [].concat(...arr);
-  return nums.reduce((acc, val) => acc + val, 0) / nums.length;
-};
+const average = (...nums) => [...nums].reduce((acc, val) => acc + val, 0) / nums.length;
 ```
 
 <details>
 <summary>Examples</summary>
 
 ```js
-average([1, 2, 3]); // 2
+average(...[1, 2, 3]); // 2
 average(1, 2, 3); // 2
 ```
 
@@ -2756,37 +2664,15 @@ clampNumber(1, -1, -5); // -1
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### collatz
-
-Applies the Collatz algorithm.
-
-If `n` is even, return `n/2`. Otherwise, return `3n+1`.
-
-```js
-const collatz = n => (n % 2 == 0 ? n / 2 : 3 * n + 1);
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-collatz(8); // 4
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
 ### digitize
 
 Converts a number to an array of digits.
 
-Convert the number to a string, using spread operators in ES6(`[...string]`) build an array.
+Convert the number to a string, using the spread operator (`...`) to build an array.
 Use `Array.map()` and `parseInt()` to transform each value to an integer.
 
 ```js
-const digitize = n => [...('' + n)].map(i => parseInt(i));
+const digitize = n => [...`${n}`].map(i => parseInt(i));
 ```
 
 <details>
@@ -2823,14 +2709,16 @@ distance(1, 1, 2, 3); // 2.23606797749979
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### elo
+### elo ![advanced](/advanced.svg)
 
 Computes the new ratings between two or more opponents using the [Elo rating system](https://en.wikipedia.org/wiki/Elo_rating_system). It takes an array
 of pre-ratings and returns an array containing post-ratings.
 The array should be ordered from best performer to worst performer (winner -> loser).
 
-Use the exponent `**` operator and math operators to compute the expected score (chance of winning)
-of each opponent and compute the new rating for each. Loop through the ratings, using each permutation to compute the post-Elo rating for each player in a pairwise fashion. Omit the second argument to use the default K-factor of 32, or supply a custom K-factor value. For details on the third argument, see the last example.
+Use the exponent `**` operator and math operators to compute the expected score (chance of winning).
+of each opponent and compute the new rating for each.
+Loop through the ratings, using each permutation to compute the post-Elo rating for each player in a pairwise fashion. 
+Omit the second argument to use the default `kFactor` of 32.
 
 ```js
 const elo = ([...ratings], kFactor = 32, selfRating) => {
@@ -2863,7 +2751,7 @@ elo([1200, 1200], 64); // [1232, 1168]
 // 4 player FFA, all same rank
 elo([1200, 1200, 1200, 1200]).map(Math.round); // [1246, 1215, 1185, 1154]
 /*
-For teams, each rating can adjusted based on own team's average rating vs. 
+For teams, each rating can adjusted based on own team's average rating vs.
 average rating of opposing team, with the score being added to their
 own individual rating by supplying it as the third argument.
 */
@@ -2904,57 +2792,6 @@ factorial(6); // 720
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### factors
-
-Returns the array of factors of the given `num`. 
-If the second argument is set to `true` returns only the prime factors of `num`.
-If `num` is `1` or `0` returns an empty array.
-If `num` is less than `0` returns all the factors of `-int` together with their additive inverses.
-
-Use `Array.from()`, `Array.map()` and `Array.filter()` to find all the factors of `num`.
-If given `num` is negative, use `Array.reduce()` to add the additive inverses to the array.
-Return all results if `primes` is `false`, else determine and return only the prime factors using `isPrime` and `Array.filter()`.
-Omit the second argument, `primes`, to return prime and non-prime factors by default.
-
-**Note**:- _Negative numbers are not considered prime._
-
-```js
-const factors = (num, primes = false) => {
-  const isPrime = num => {
-    const boundary = Math.floor(Math.sqrt(num));
-    for (var i = 2; i <= boundary; i++) if (num % i === 0) return false;
-    return num >= 2;
-  };
-  const isNeg = num < 0;
-  num = isNeg ? -num : num;
-  let array = Array.from({ length: num - 1 })
-    .map((val, i) => (num % (i + 2) === 0 ? i + 2 : false))
-    .filter(val => val);
-  if (isNeg)
-    array = array.reduce((acc, val) => {
-      acc.push(val);
-      acc.push(-val);
-      return acc;
-    }, []);
-  return primes ? array.filter(isPrime) : array;
-};
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-factors(12); // [2,3,4,6,12]
-factors(12, true); // [2,3]
-factors(-12); // [2, -2, 3, -3, 4, -4, 6, -6, 12, -12]
-factors(-12, true); // [2,3]
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
 ### fibonacci
 
 Generates an array, containing the Fibonacci sequence, up until the nth term.
@@ -2982,59 +2819,6 @@ fibonacci(6); // [0, 1, 1, 2, 3, 5]
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### fibonacciCountUntilNum
-
-Returns the number of fibonnacci numbers up to `num`(`0` and `num` inclusive).
-
-Use a mathematical formula to calculate the number of fibonacci numbers until `num`.
-
-```js
-const fibonacciCountUntilNum = num =>
-  Math.ceil(Math.log(num * Math.sqrt(5) + 1 / 2) / Math.log((Math.sqrt(5) + 1) / 2));
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-fibonacciCountUntilNum(10); // 7
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
-### fibonacciUntilNum
-
-Generates an array, containing the Fibonacci sequence, up until the nth term.
-
-Create an empty array of the specific length, initializing the first two values (`0` and `1`).
-Use `Array.reduce()` to add values into the array, using the sum of the last two values, except for the first two.
-Uses a mathematical formula to calculate the length of the array required.
-
-```js
-const fibonacciUntilNum = num => {
-  let n = Math.ceil(Math.log(num * Math.sqrt(5) + 1 / 2) / Math.log((Math.sqrt(5) + 1) / 2));
-  return Array.from({ length: n }).reduce(
-    (acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i),
-    []
-  );
-};
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-fibonacciUntilNum(10); // [ 0, 1, 1, 2, 3, 5, 8 ]
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
 ### gcd
 
 Calculates the greatest common divisor between two or more numbers/arrays.
@@ -3046,7 +2830,7 @@ Otherwise, return the GCD of `y` and the remainder of the division `x/y`.
 ```js
 const gcd = (...arr) => {
   const _gcd = (x, y) => (!y ? x : gcd(y, x % y));
-  return [].concat(...arr).reduce((a, b) => _gcd(a, b));
+  return [...arr].reduce((a, b) => _gcd(a, b));
 };
 ```
 
@@ -3055,6 +2839,7 @@ const gcd = (...arr) => {
 
 ```js
 gcd(8, 36); // 4
+gcd(...[12, 8, 32]); // 4
 ```
 
 </details>
@@ -3115,44 +2900,6 @@ hammingDistance(2, 3); // 1
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### howManyTimes
-
-Returns the number of times `num` can be divided by `divisor` (integer or fractional) without getting a fractional answer.
-Works for both negative and positive integers.
-
-If `divisor` is `-1` or `1` return `Infinity`.
-If `divisor` is `-0` or `0` return `0`.
-Otherwise, keep dividing `num` with `divisor` and incrementing `i`, while the result is an integer.
-Return the number of times the loop was executed, `i`.
-
-```js
-const howManyTimes = (num, divisor) => {
-  if (divisor === 1 || divisor === -1) return Infinity;
-  if (divisor === 0) return 0;
-  let i = 0;
-  while (Number.isInteger(num / divisor)) {
-    i++;
-    num = num / divisor;
-  }
-  return i;
-};
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-howManyTimes(100, 2); // 2
-howManyTimes(100, 2.5); // 2
-howManyTimes(100, 0); // 0
-howManyTimes(100, -1); // Infinity
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
 ### inRange
 
 Checks if the given number falls within the given range.
@@ -3182,32 +2929,6 @@ inrange(3, 2); // false
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### isArmstrongNumber
-
-Checks if the given number is an Armstrong number or not.
-
-Convert the given number into an array of digits. Use the exponent operator (`**`) to get the appropriate power for each digit and sum them up. If the sum is equal to the number itself, return `true` otherwise `false`.
-
-```js
-const isArmstrongNumber = digits =>
-  (arr => arr.reduce((a, d) => a + parseInt(d) ** arr.length, 0) == digits)(
-    (digits + '').split('')
-  );
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-isArmstrongNumber(1634); // true
-isArmstrongNumber(56); // false
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
 ### isDivisible
 
 Checks if the first numeric argument is divisible by the second one.
@@ -3282,7 +3003,7 @@ isPrime(11); // true
 
 ### lcm
 
-Returns the least common multiple of two or more numbers/arrays.
+Returns the least common multiple of two or more numbers.
 
 Use the greatest common divisor (GCD) formula and `Math.abs()` to determine the least common multiple.
 The GCD formula uses recursion.
@@ -3291,7 +3012,7 @@ The GCD formula uses recursion.
 const lcm = (...arr) => {
   const gcd = (x, y) => (!y ? x : gcd(y, x % y));
   const _lcm = (x, y) => x * y / gcd(x, y);
-  return [].concat(...arr).reduce((a, b) => _lcm(a, b));
+  return [...arr].reduce((a, b) => _lcm(a, b));
 };
 ```
 
@@ -3300,7 +3021,7 @@ const lcm = (...arr) => {
 
 ```js
 lcm(12, 7); // 84
-lcm([1, 3, 4], 5); // 60
+lcm(...[1, 3, 4, 5]); // 60
 ```
 
 </details>
@@ -3512,44 +3233,20 @@ round(1.005, 2); // 1.01
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### solveRPN
+### sbdm
 
-Solves the given mathematical expression in [reverse polish notation](https://en.wikipedia.org/wiki/Reverse_Polish_notation).
-Throws appropriate errors if there are unrecognized symbols or the expression is wrong. The valid operators are :- `+`,`-`,`*`,`/`,`^`,`**` (`^`&`**` are the exponential symbols and are same). This snippet does not supports any unary operators.
+Hashes the input string into a whole number.
 
-Use a dictionary, `OPERATORS` to specify each operator's matching mathematical operation.
-Use `String.replace()` with a regular expression to replace `^` with `**`, `String.split()` to tokenize the string and `Array.filter()` to remove empty tokens.
-Use `Array.forEach()` to parse each `symbol`, evaluate it as a numeric value or operator and solve the mathematical expression.
-Numeric values are converted to floating point numbers and pushed to a `stack`, while operators are evaluated using the `OPERATORS` dictionary and pop elements from the `stack` to apply operations.
+Use `String.split('')` and `Array.reduce()` to create a hash of the input string, utilizing bit shifting.
 
 ```js
-const solveRPN = rpn => {
-  const OPERATORS = {
-    '*': (a, b) => a * b,
-    '+': (a, b) => a + b,
-    '-': (a, b) => a - b,
-    '/': (a, b) => a / b,
-    '**': (a, b) => a ** b
-  };
-  const [stack, solve] = [
-    [],
-    rpn
-      .replace(/\^/g, '**')
-      .split(/\s+/g)
-      .filter(el => !/\s+/.test(el) && el !== '')
-  ];
-  solve.forEach(symbol => {
-    if (!isNaN(parseFloat(symbol)) && isFinite(symbol)) {
-      stack.push(symbol);
-    } else if (Object.keys(OPERATORS).includes(symbol)) {
-      const [a, b] = [stack.pop(), stack.pop()];
-      stack.push(OPERATORS[symbol](parseFloat(b), parseFloat(a)));
-    } else {
-      throw `${symbol} is not a recognized symbol`;
-    }
-  });
-  if (stack.length === 1) return stack.pop();
-  else throw `${rpn} is not a proper RPN. Please check it and try again`;
+const sdbm = str => {
+  let arr = str.split('');
+  return arr.reduce(
+    (hashCode, currentVal) =>
+      (hashCode = currentVal.charCodeAt(0) + (hashCode << 6) + (hashCode << 16) - hashCode),
+    0
+  );
 };
 ```
 
@@ -3557,8 +3254,7 @@ const solveRPN = rpn => {
 <summary>Examples</summary>
 
 ```js
-solveRPN('15 7 1 1 + - / 3 * 2 1 1 + + -'); // 5
-solveRPN('2 3 ^'); // 8
+console.log(sdbm('name')); // -3521204949
 ```
 
 </details>
@@ -3604,14 +3300,14 @@ Returns the sum of two or more numbers/arrays.
 Use `Array.reduce()` to add each value to an accumulator, initialized with a value of `0`.
 
 ```js
-const sum = (...arr) => [].concat(...arr).reduce((acc, val) => acc + val, 0);
+const sum = (...arr) => [...arr].reduce((acc, val) => acc + val, 0);
 ```
 
 <details>
 <summary>Examples</summary>
 
 ```js
-sum([1, 2, 3, 4]); // 10
+sum(...[1, 2, 3, 4]); // 10
 ```
 
 </details>
@@ -3816,8 +3512,8 @@ UUIDGeneratorNode(); // '79c7c136-60ee-40a2-beb2-856f1feabefc'
 
 Removes any properties except the ones specified from a JSON object.
 
-Use `Object.keys()` method to loop over given JSON object and deleting keys that are not `include`d in given array.
-Also if you give it a special key (`childIndicator`) it will search deeply inside it to apply function to inner objects too.
+Use `Object.keys()` method to loop over given JSON object and deleting keys that are not included in given array.
+If you pass a special key,`childIndicator`, it will search deeply apply the function to inner objects, too.
 
 ```js
 const cleanObj = (obj, keysToKeep = [], childIndicator) => {
@@ -3947,8 +3643,8 @@ objectToPairs({ a: 1, b: 2 }); // [['a',1],['b',2]])
 
 Returns a sorted array of objects ordered by properties and orders.
 
-Uses a custom implementation of sort, that reduces the props array argument with a default value of 0, it uses destructuring to swap the properties position depending on the order passed.
-If no orders array is passed it sort by 'asc' by default.
+Uses `Array.sort()`, `Array.reduce()` on the `props` array with a default value of `0`, use array destructuring to swap the properties position depending on the order passed.
+If no `orders` array is passed it sort by `'asc'` by default.
 
 ```js
 const orderBy = (arr, props, orders) =>
@@ -3979,7 +3675,7 @@ orderBy(users, ['name', 'age']); // [{name: 'barney', age: 36}, {name: 'fred', a
 
 ### select
 
-Retrieve a property that indicated by the selector from an object.
+Retrieve a property indicated by the selector from an object.
 
 If the property does not exists returns `undefined`.
 
@@ -4028,20 +3724,20 @@ const b = shallowClone(a); // a !== b
 
 Get size of arrays, objects or strings.
 
-Get type of `value` (`array`, `object` or `string`). 
-Use `length` property for arrays. 
-Use `length` or `size` value if available or number of keys for objects. 
-Use `size` of a [`Blob` object](https://developer.mozilla.org/en-US/docs/Web/API/Blob) created from `value` for strings.
+Get type of `val` (`array`, `object` or `string`). 
+Use `length` property for arrays.
+Use `length` or `size` value if available or number of keys for objects.
+Use `size` of a [`Blob` object](https://developer.mozilla.org/en-US/docs/Web/API/Blob) created from `val` for strings.
 
 Split strings into array of characters with `split('')` and return its length.
 
 ```js
-const size = value =>
-  Array.isArray(value)
-    ? value.length
-    : value && typeof value === 'object'
-      ? value.size || value.length || Object.keys(value).length
-      : typeof value === 'string' ? new Blob([value]).size : 0;
+const size = val =>
+  Array.isArray(val)
+    ? val.length
+    : val && typeof val === 'object'
+      ? val.size || val.length || Object.keys(val).length
+      : typeof val === 'string' ? new Blob([val]).size : 0;
 ```
 
 <details>
@@ -4120,7 +3816,7 @@ anagrams('abc'); // ['abc','acb','bac','bca','cab','cba']
 
 ### byteSize
 
-Returns the length of string.
+Returns the length of a string in bytes.
 
 Convert a given string to a [`Blob` Object](https://developer.mozilla.org/en-US/docs/Web/API/Blob) and find its `size`.
 
@@ -4145,7 +3841,7 @@ byteSize('Hello World'); // 11
 
 Capitalizes the first letter of a string.
 
-Use destructuring and `toUpperCase()` to capitalize first letter, `...rest` to get array of characters after first letter and then `Array.join('')` to make it a string again.
+Use array destructuring and `String.toUpperCase()` to capitalize first letter, `...rest` to get array of characters after first letter and then `Array.join('')` to make it a string again.
 Omit the `lowerRest` parameter to keep the rest of the string intact, or set it to `true` to convert to lowercase.
 
 ```js
@@ -4170,7 +3866,7 @@ capitalize('fooBar', true); // 'Foobar'
 
 Capitalizes the first letter of every word in a string.
 
-Use `replace()` to match the first character of each word and `toUpperCase()` to capitalize it.
+Use `String.replace()` to match the first character of each word and `String.toUpperCase()` to capitalize it.
 
 ```js
 const capitalizeEveryWord = str => str.replace(/\b[a-z]/g, char => char.toUpperCase());
@@ -4215,7 +3911,7 @@ countVowels('gym'); // 0
 
 Escapes a string for use in HTML.
 
-Use `String.replace()` with a regex that matches the characters that need to be escaped, using a callback function to replace each character instance with its associated escaped character using a dictionary (object).
+Use `String.replace()` with a regexp that matches the characters that need to be escaped, using a callback function to replace each character instance with its associated escaped character using a dictionary (object).
 
 ```js
 const escapeHTML = str =>
@@ -4248,7 +3944,7 @@ escapeHTML('<a href="#">Me & you</a>'); // '&lt;a href=&quot;#&quot;&gt;Me &amp;
 
 Escapes a string to use in a regular expression.
 
-Use `replace()` to escape special characters.
+Use `String.replace()` to escape special characters.
 
 ```js
 const escapeRegExp = str => str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
@@ -4270,8 +3966,8 @@ escapeRegExp('(test)'); // \\(test\\)
 
 Converts a string from camelcase.
 
-Use `replace()` to remove underscores, hyphens, and spaces and convert words to camelcase.
-Omit the second argument to use a default separator of `_`.
+Use `String.replace()` to remove underscores, hyphens, and spaces and convert words to camelcase.
+Omit the second argument to use a default `separator` of `_`.
 
 ```js
 const fromCamelCase = (str, separator = '_') =>
@@ -4323,7 +4019,7 @@ isAbsoluteURL('/foo/bar'); // false
 
 Replaces all but the last `num` of characters with the specified mask character.
 
-Use `String.slice()` to grab the portion of the characters that need to be masked and use `String.replace()` with a regex to replace every character with the mask character.
+Use `String.slice()` to grab the portion of the characters that need to be masked and use `String.replace()` with a regexp to replace every character with the mask character.
 Concatenate the masked characters with the remaining unmasked portion of the string.
 Omit the second argument, `num`, to keep a default of `4` characters unmasked. If `num` is negative, the unmasked characters will be at the start of the string.
 Omit the third argument, `mask`, to use a default character of `'*'` for the mask.
@@ -4351,8 +4047,8 @@ mask(1234567890, -4, '$'); // '1234$$$$$$'
 
 Returns `true` if the given string is a palindrome, `false` otherwise.
 
-Convert string `toLowerCase()` and use `replace()` to remove non-alphanumeric characters from it.
-Then, `split('')` into individual characters, `reverse()`, `join('')` and compare to the original, unreversed string, after converting it `tolowerCase()`.
+Convert string `String.toLowerCase()` and use `String.replace()` to remove non-alphanumeric characters from it.
+Then, `String.split('')` into individual characters, `Array.reverse()`, `String.join('')` and compare to the original, unreversed string, after converting it `String.tolowerCase()`.
 
 ```js
 const palindrome = str => {
@@ -4416,42 +4112,19 @@ autoPluralize(2, 'person'); // 'people'
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### repeatString
-
-Repeats a string n times using `String.repeat()`
-
-If no string is provided the default is `""` and the default number of times is 2.
-
-```js
-const repeatString = (str = '', num = 2) => {
-  return num >= 0 ? str.repeat(num) : str;
-};
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-repeatString('abc', 3); // 'abcabcabc'
-repeatString('abc'); // 'abcabc'
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
 ### reverseString
 
 Reverses a string.
 
-Use `split('')` and `Array.reverse()` to reverse the order of the characters in the string.
-Combine characters to get a string using `join('')`.
+Use the spread operator (`...`) and `Array.reverse()` to reverse the order of the characters in the string.
+Combine characters to get a string using `String.join('')`.
 
 ```js
+
+
+
 const reverseString = str =>
-  str
-    .split('')
+  [..str]
     .reverse()
     .join('');
 ```
@@ -4472,14 +4145,10 @@ reverseString('foobar'); // 'raboof'
 
 Alphabetically sorts the characters in a string.
 
-Split the string using `split('')`, `Array.sort()` utilizing `localeCompare()`, recombine using `join('')`.
+Use the spread operator (`...`), `Array.sort()` and  `String.localeCompare()` to sort the characters in `str`, recombine using `String.join('')`.
 
 ```js
-const sortCharactersInString = str =>
-  str
-    .split('')
-    .sort((a, b) => a.localeCompare(b))
-    .join('');
+const sortCharactersInString = str => [...str].sort((a, b) => a.localeCompare(b)).join('');
 ```
 
 <details>
@@ -4520,8 +4189,7 @@ splitLines('This\nis a\nmultiline\nstring.\n'); // ['This', 'is a', 'multiline',
 
 Converts a string to camelcase.
 
-Break the string into words and combine them capitalizing the first letter of each word.
-For more detailed explanation of this Regex, [visit this Site](https://regex101.com/r/bMCgAB/1).
+Break the string into words and combine them capitalizing the first letter of each word, using a regexp.
 
 ```js
 const toCamelCase = str => {
@@ -4554,8 +4222,7 @@ toCamelCase('some-mixed_string with spaces_underscores-and-hyphens'); // 'someMi
 
 Converts a string to kebab case.
 
-Break the string into words and combine them using `-` as a separator.
-For more detailed explanation of this Regex, [visit this Site](https://regex101.com/r/bMCgAB/1).
+Break the string into words and combine them adding `-` as a separator, using a regexp.
 
 ```js
 const toKebabCase = str =>
@@ -4586,8 +4253,7 @@ toKebabCase('IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSo
 
 Converts a string to snake case.
 
-Break the string into words and combine them using `_` as a separator.
-For more detailed explanation of this Regex, [visit this Site](https://regex101.com/r/bMCgAB/1).
+Break the string into words and combine them adding `_` as a separator, using a regexp.
 
 ```js
 const toSnakeCase = str =>
@@ -4619,7 +4285,7 @@ toSnakeCase('IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSo
 Truncates a string up to a specified length.
 
 Determine if the string's `length` is greater than `num`.
-Return the string truncated to the desired length, with `...` appended to the end or the original string.
+Return the string truncated to the desired length, with `'...'` appended to the end or the original string.
 
 ```js
 const truncateString = (str, num) =>
@@ -4675,8 +4341,8 @@ unescapeHTML('&lt;a href=&quot;#&quot;&gt;Me &amp; you&lt;/a&gt;'); // '<a href=
 
 Converts a given string into an array of words.
 
-Use `String.split()` with a supplied pattern (defaults to non-alpha as a regex) to convert to an array of strings. Use `Array.filter()` to remove any empty strings.
-Omit the second argument to use the default regex.
+Use `String.split()` with a supplied pattern (defaults to non-alpha as a regexp) to convert to an array of strings. Use `Array.filter()` to remove any empty strings.
+Omit the second argument to use the default regexp.
 
 ```js
 const words = (str, pattern = /[^a-zA-Z-]+/) => str.split(pattern).filter(Boolean);
@@ -4695,110 +4361,13 @@ words('python, javaScript & coffee'); // ["python", "javaScript", "coffee"]
 <br>[⬆ Back to top](#table-of-contents)
 
 ---
- ## 🔧 Utility
-
-### cloneRegExp
-
-Clones a regular expression.
-
-Use `new RegExp()`, `RegExp.source` and `RegExp.flags` to clone the given regular expression.
-
-```js
-const cloneRegExp = regExp => new RegExp(regExp.source, regExp.flags);
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-const regExp = /lorem ipsum/gi;
-const regExp2 = cloneRegExp(regExp); // /lorem ipsum/gi
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
-### coalesce
-
-Returns the first non-null/undefined argument.
-
-Use `Array.find()` to return the first non `null`/`undefined` argument.
-
-```js
-const coalesce = (...args) => args.find(_ => ![undefined, null].includes(_));
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-coalesce(null, undefined, '', NaN, 'Waldo'); // ""
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
-### coalesceFactory
-
-Returns a customized coalesce function that returns the first argument that returns `true` from the provided argument validation function.
-
-Use `Array.find()` to return the first argument that returns `true` from the provided argument validation function.
-
-```js
-const coalesceFactory = valid => (...args) => args.find(valid);
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-const customCoalesce = coalesceFactory(_ => ![null, undefined, '', NaN].includes(_));
-customCoalesce(undefined, null, NaN, '', 'Waldo'); // "Waldo"
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
-### extendHex
-
-Extends a 3-digit color code to a 6-digit color code.
-
-Use `Array.map()`, `split()` and `Array.join()` to join the mapped array for converting a 3-digit RGB notated hexadecimal color-code to the 6-digit form.
-`String.slice()` is used to remove `#` from string start since it's added once.
-```js
-const extendHex = shortHex =>
-  '#' +
-  shortHex
-    .slice(shortHex.startsWith('#') ? 1 : 0)
-    .split('')
-    .map(x => x + x)
-    .join('');
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-extendHex('#03f'); // '#0033ff'
-extendHex('05a'); // '#0055aa'
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
+ ##  Type
 
 ### getType
 
 Returns the native type of a value.
 
-Returns lowercased constructor name of value, "undefined" or "null" if value is undefined or null
+Returns lowercased constructor name of value, `"undefined"` or `"null"` if value is `undefined` or `null`.
 
 ```js
 const getType = v =>
@@ -4817,74 +4386,6 @@ getType(new Set([1, 2, 3])); // 'Set'
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### getURLParameters
-
-Returns an object containing the parameters of the current URL.
-
-Use `match()` with an appropriate regular expression to get all key-value pairs, `Array.reduce()` to map and combine them into a single object.
-Pass `location.search` as the argument to apply to the current `url`.
-
-```js
-const getURLParameters = url =>
-  url
-    .match(/([^?=&]+)(=([^&]*))/g)
-    .reduce((a, v) => ((a[v.slice(0, v.indexOf('='))] = v.slice(v.indexOf('=') + 1)), a), {});
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-getURLParameters('http://url.com/page?name=Adam&surname=Smith'); // {name: 'Adam', surname: 'Smith'}
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
-### hexToRGB
-
-Converts a color code to a `rgb()` or `rgba()` string if alpha value is provided.
-
-Use bitwise right-shift operator and mask bits with `&` (and) operator to convert a hexadecimal color code (with or without prefixed with `#`) to a string with the RGB values. If it's 3-digit color code, first convert to 6-digit version. If an alpha value is provided alongside 6-digit hex, give `rgba()` string in return.
-
-```js
-const hexToRGB = hex => {
-  let alpha = false,
-    h = hex.slice(hex.startsWith('#') ? 1 : 0);
-  if (h.length === 3) h = [...h].map(x => x + x).join('');
-  else if (h.length === 8) alpha = true;
-  h = parseInt(h, 16);
-  return (
-    'rgb' +
-    (alpha ? 'a' : '') +
-    '(' +
-    (h >>> (alpha ? 24 : 16)) +
-    ', ' +
-    ((h & (alpha ? 0x00ff0000 : 0x00ff00)) >>> (alpha ? 16 : 8)) +
-    ', ' +
-    ((h & (alpha ? 0x0000ff00 : 0x0000ff)) >>> (alpha ? 8 : 0)) +
-    (alpha ? `, ${h & 0x000000ff}` : '') +
-    ')'
-  );
-};
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-hexToRGB('#27ae60ff'); // 'rgba(39, 174, 96, 255)'
-hexToRGB('27ae60'); // 'rgb(39, 174, 96)'
-hexToRGB('#fff'); // 'rgb(255, 255, 255)'
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
 ### isArray
 
 Checks if the given argument is an array.
@@ -4892,14 +4393,13 @@ Checks if the given argument is an array.
 Use `Array.isArray()` to check if a value is classified as an array.
 
 ```js
-const isArray = val => !!val && Array.isArray(val);
+const isArray = val => Array.isArray(val);
 ```
 
 <details>
 <summary>Examples</summary>
 
 ```js
-isArray(null); // false
 isArray([1]); // true
 ```
 
@@ -4975,7 +4475,6 @@ const isFunction = val => typeof val === 'function';
 <summary>Examples</summary>
 
 ```js
-isFunction(null); // false
 isFunction('x'); // false
 isFunction(x => x); // true
 ```
@@ -5164,6 +4663,174 @@ isValidJSON(null); // true
 
 <br>[⬆ Back to top](#table-of-contents)
 
+---
+ ## 🔧 Utility
+
+### cloneRegExp
+
+Clones a regular expression.
+
+Use `new RegExp()`, `RegExp.source` and `RegExp.flags` to clone the given regular expression.
+
+```js
+const cloneRegExp = regExp => new RegExp(regExp.source, regExp.flags);
+```
+
+<details>
+<summary>Examples</summary>
+
+```js
+const regExp = /lorem ipsum/gi;
+const regExp2 = cloneRegExp(regExp); // /lorem ipsum/gi
+```
+
+</details>
+
+<br>[⬆ Back to top](#table-of-contents)
+
+
+### coalesce
+
+Returns the first non-null/undefined argument.
+
+Use `Array.find()` to return the first non `null`/`undefined` argument.
+
+```js
+const coalesce = (...args) => args.find(_ => ![undefined, null].includes(_));
+```
+
+<details>
+<summary>Examples</summary>
+
+```js
+coalesce(null, undefined, '', NaN, 'Waldo'); // ""
+```
+
+</details>
+
+<br>[⬆ Back to top](#table-of-contents)
+
+
+### coalesceFactory
+
+Returns a customized coalesce function that returns the first argument that returns `true` from the provided argument validation function.
+
+Use `Array.find()` to return the first argument that returns `true` from the provided argument validation function.
+
+```js
+const coalesceFactory = valid => (...args) => args.find(valid);
+```
+
+<details>
+<summary>Examples</summary>
+
+```js
+const customCoalesce = coalesceFactory(_ => ![null, undefined, '', NaN].includes(_));
+customCoalesce(undefined, null, NaN, '', 'Waldo'); // "Waldo"
+```
+
+</details>
+
+<br>[⬆ Back to top](#table-of-contents)
+
+
+### extendHex
+
+Extends a 3-digit color code to a 6-digit color code.
+
+Use `Array.map()`, `String.split()` and `Array.join()` to join the mapped array for converting a 3-digit RGB notated hexadecimal color-code to the 6-digit form.
+`Array.slice()` is used to remove `#` from string start since it's added once.
+
+```js
+const extendHex = shortHex =>
+  '#' +
+  shortHex
+    .slice(shortHex.startsWith('#') ? 1 : 0)
+    .split('')
+    .map(x => x + x)
+    .join('');
+```
+
+<details>
+<summary>Examples</summary>
+
+```js
+extendHex('#03f'); // '#0033ff'
+extendHex('05a'); // '#0055aa'
+```
+
+</details>
+
+<br>[⬆ Back to top](#table-of-contents)
+
+
+### getURLParameters
+
+Returns an object containing the parameters of the current URL.
+
+Use `String.match()` with an appropriate regular expression to get all key-value pairs, `Array.reduce()` to map and combine them into a single object.
+Pass `location.search` as the argument to apply to the current `url`.
+
+```js
+const getURLParameters = url =>
+  url
+    .match(/([^?=&]+)(=([^&]*))/g)
+    .reduce((a, v) => ((a[v.slice(0, v.indexOf('='))] = v.slice(v.indexOf('=') + 1)), a), {});
+```
+
+<details>
+<summary>Examples</summary>
+
+```js
+getURLParameters('http://url.com/page?name=Adam&surname=Smith'); // {name: 'Adam', surname: 'Smith'}
+```
+
+</details>
+
+<br>[⬆ Back to top](#table-of-contents)
+
+
+### hexToRGB ![advanced](/advanced.svg)
+
+Converts a color code to a `rgb()` or `rgba()` string if alpha value is provided.
+
+Use bitwise right-shift operator and mask bits with `&` (and) operator to convert a hexadecimal color code (with or without prefixed with `#`) to a string with the RGB values. If it's 3-digit color code, first convert to 6-digit version. If an alpha value is provided alongside 6-digit hex, give `rgba()` string in return.
+
+```js
+const hexToRGB = hex => {
+  let alpha = false,
+    h = hex.slice(hex.startsWith('#') ? 1 : 0);
+  if (h.length === 3) h = [...h].map(x => x + x).join('');
+  else if (h.length === 8) alpha = true;
+  h = parseInt(h, 16);
+  return (
+    'rgb' +
+    (alpha ? 'a' : '') +
+    '(' +
+    (h >>> (alpha ? 24 : 16)) +
+    ', ' +
+    ((h & (alpha ? 0x00ff0000 : 0x00ff00)) >>> (alpha ? 16 : 8)) +
+    ', ' +
+    ((h & (alpha ? 0x0000ff00 : 0x0000ff)) >>> (alpha ? 8 : 0)) +
+    (alpha ? `, ${h & 0x000000ff}` : '') +
+    ')'
+  );
+};
+```
+
+<details>
+<summary>Examples</summary>
+
+```js
+hexToRGB('#27ae60ff'); // 'rgba(39, 174, 96, 255)'
+hexToRGB('27ae60'); // 'rgb(39, 174, 96)'
+hexToRGB('#fff'); // 'rgb(255, 255, 255)'
+```
+
+</details>
+
+<br>[⬆ Back to top](#table-of-contents)
+
 
 ### prettyBytes
 
@@ -5228,7 +4895,7 @@ randomHexColorCode(); // "#e34155"
 
 Converts the values of RGB components to a color code.
 
-Convert given RGB parameters to hexadecimal string using bitwise left-shift operator (`<<`) and `toString(16)`, then `padStart(6,'0')` to get a 6-digit hexadecimal value.
+Convert given RGB parameters to hexadecimal string using bitwise left-shift operator (`<<`) and `toString(16)`, then `String.padStart(6,'0')` to get a 6-digit hexadecimal value.
 
 ```js
 const RGBToHex = (r, g, b) => ((r << 16) + (g << 8) + b).toString(16).padStart(6, '0');
@@ -5246,35 +4913,6 @@ RGBToHex(255, 165, 1); // 'ffa501'
 <br>[⬆ Back to top](#table-of-contents)
 
 
-### sbdm
-
-This algorithm is a simple hash-algorithm that hashes it input string `s` into a whole number.
-
-Use `split('')` and `Array.reduce()` to create a hash of the input string, utilizing bit shifting.
-
-```js
-const sdbm = str => {
-  let arr = str.split('');
-  return arr.reduce(
-    (hashCode, currentVal) =>
-      (hashCode = currentVal.charCodeAt(0) + (hashCode << 6) + (hashCode << 16) - hashCode),
-    0
-  );
-};
-```
-
-<details>
-<summary>Examples</summary>
-
-```js
-console.log(sdbm('name')); // -3521204949
-```
-
-</details>
-
-<br>[⬆ Back to top](#table-of-contents)
-
-
 ### timeTaken
 
 Measures the time taken by a function to execute.
@@ -5359,7 +4997,7 @@ toOrdinalSuffix('123'); // "123rd"
 
 Returns `true` if the given value is a number, `false` otherwise.
 
-Use `!isNaN` in combination with `parseFloat()` to check if the argument is a number.
+Use `!isNaN()` in combination with `parseFloat()` to check if the argument is a number.
 Use `isFinite()` to check if the number is finite.
 Use `Number()` to check if the coercion holds.
 
diff --git a/advanced.svg b/advanced.svg
new file mode 100644
index 000000000..428312a3c
--- /dev/null
+++ b/advanced.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="78" height="20"><linearGradient id="b" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"/><stop offset="1" stop-opacity=".1"/></linearGradient><clipPath id="a"><rect height="20" rx="3" fill="#fff" width="64"/></clipPath><g clip-path="url(#a)"><path fill="#555" d="M0 0h65v20H0z"/></g><g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="110"><text x="325" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="530">advanced</text><text x="325" y="140" transform="scale(.1)" textLength="530">advanced</text></g> </svg>
diff --git a/dist/_30s.es5.js b/dist/_30s.es5.js
index 32221cc96..34ebd5516 100644
--- a/dist/_30s.es5.js
+++ b/dist/_30s.es5.js
@@ -248,9 +248,9 @@ var difference = function difference(a, b) {
 
 var differenceWith = function differenceWith(arr, val, comp) {
   return arr.filter(function (a) {
-    return !val.find(function (b) {
+    return val.findIndex(function (b) {
       return comp(a, b);
-    });
+    }) === -1;
   });
 };
 
@@ -301,20 +301,43 @@ var elementIsVisibleInViewport = function elementIsVisibleInViewport(el) {
 
 var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();
 
+function _toArray$1(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }
+
 var elo = function elo(_ref) {
-  var _ref2 = _slicedToArray(_ref, 2),
-      a = _ref2[0],
-      b = _ref2[1];
+  var _ref2 = _toArray$1(_ref),
+      ratings = _ref2.slice(0);
 
   var kFactor = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 32;
+  var selfRating = arguments[2];
+
+  var _ratings = _slicedToArray(ratings, 2),
+      a = _ratings[0],
+      b = _ratings[1];
 
   var expectedScore = function expectedScore(self, opponent) {
     return 1 / (1 + Math.pow(10, (opponent - self) / 400));
   };
   var newRating = function newRating(rating, i) {
-    return rating + kFactor * (i - expectedScore(i ? a : b, i ? b : a));
+    return (selfRating || rating) + kFactor * (i - expectedScore(i ? a : b, i ? b : a));
   };
-  return [newRating(a, 1), newRating(b, 0)];
+  if (ratings.length === 2) {
+    return [newRating(a, 1), newRating(b, 0)];
+  } else {
+    for (var i = 0; i < ratings.length; i++) {
+      var j = i;
+      while (j < ratings.length - 1) {
+        var _elo = elo([ratings[i], ratings[j + 1]], kFactor);
+
+        var _elo2 = _slicedToArray(_elo, 2);
+
+        ratings[i] = _elo2[0];
+        ratings[j + 1] = _elo2[1];
+
+        j++;
+      }
+    }
+  }
+  return ratings;
 };
 
 var escapeHTML = function escapeHTML(str) {
@@ -425,6 +448,22 @@ var flip = function flip(fn) {
   };
 };
 
+var formatDuration = function formatDuration(ms) {
+  if (ms < 0) ms = -ms;
+  var time = {
+    day: Math.floor(ms / 86400000),
+    hour: Math.floor(ms / 3600000) % 24,
+    minute: Math.floor(ms / 60000) % 60,
+    second: Math.floor(ms / 1000) % 60,
+    millisecond: Math.floor(ms) % 1000
+  };
+  return Object.entries(time).filter(function (val) {
+    return val[1] !== 0;
+  }).map(function (val) {
+    return val[1] + ' ' + (val[1] !== 1 ? val[0] + 's' : val[0]);
+  }).join(', ');
+};
+
 var fromCamelCase = function fromCamelCase(str) {
   var separator = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '_';
   return str.replace(/([a-z\d])([A-Z])/g, '$1' + separator + '$2').replace(/([A-Z]+)([A-Z][a-z\d]+)/g, '$1' + separator + '$2').toLowerCase();
@@ -437,12 +476,11 @@ var functionName = function functionName(fn) {
 var gcd = function gcd() {
   var _ref;
 
-  var data = (_ref = []).concat.apply(_ref, arguments);
-  var helperGcd = function helperGcd(x, y) {
+  var _gcd = function _gcd(x, y) {
     return !y ? x : gcd(y, x % y);
   };
-  return data.reduce(function (a, b) {
-    return helperGcd(a, b);
+  return (_ref = []).concat.apply(_ref, arguments).reduce(function (a, b) {
+    return _gcd(a, b);
   });
 };
 
@@ -633,7 +671,7 @@ var isEven = function isEven(num) {
 };
 
 var isFunction = function isFunction(val) {
-  return val && typeof val === 'function';
+  return typeof val === 'function';
 };
 
 var isNull = function isNull(val) {
@@ -754,6 +792,18 @@ var lowercaseKeys = function lowercaseKeys(obj) {
   }, {});
 };
 
+var luhnCheck = function luhnCheck(num) {
+  var arr = (num + '').split('').reverse().map(function (x) {
+    return parseInt(x);
+  });
+  var lastDigit = arr.splice(0, 1)[0];
+  var sum = arr.reduce(function (acc, val, i) {
+    return i % 2 !== 0 ? acc + val : acc + val * 2 % 9 || 9;
+  }, 0);
+  sum += lastDigit;
+  return sum % 10 === 0;
+};
+
 var mapObject = function mapObject(arr, fn) {
   return function (a) {
     return a = [arr, arr.map(fn)], a[0].reduce(function (acc, val, ind) {
@@ -905,11 +955,19 @@ var pipeFunctions = function pipeFunctions() {
   });
 };
 
-var pluralize = function pluralize(num, item) {
-  var items = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : item + 's';
-  return num <= 0 ? function () {
-    throw new Error('\'num\' should be >= 1. Value povided was ' + num + '.');
-  }() : num === 1 ? item : items;
+var _typeof$3 = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
+
+var pluralize = function pluralize(val, word) {
+  var plural = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : word + 's';
+
+  var _pluralize = function _pluralize(num, word) {
+    var plural = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : word + 's';
+    return [1, -1].includes(Number(num)) ? word : plural;
+  };
+  if ((typeof val === 'undefined' ? 'undefined' : _typeof$3(val)) === 'object') return function (num, word) {
+    return _pluralize(num, word, val[word]);
+  };
+  return _pluralize(val, word, plural);
 };
 
 var powerset = function powerset(arr) {
@@ -1007,10 +1065,10 @@ var pullAtValue = function pullAtValue(arr, pullArr) {
 
 function _toConsumableArray$10(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }
 
-function _toArray$1(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }
+function _toArray$2(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }
 
 var quickSort = function quickSort(_ref, desc) {
-  var _ref2 = _toArray$1(_ref),
+  var _ref2 = _toArray$2(_ref),
       n = _ref2[0],
       nums = _ref2.slice(1);
 
@@ -1103,10 +1161,10 @@ var sample = function sample(arr) {
   return arr[Math.floor(Math.random() * arr.length)];
 };
 
-function _toArray$2(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }
+function _toArray$3(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }
 
 var sampleSize = function sampleSize(_ref) {
-  var _ref2 = _toArray$2(_ref),
+  var _ref2 = _toArray$3(_ref),
       arr = _ref2.slice(0);
 
   var n = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;
@@ -1160,10 +1218,10 @@ var show = function show() {
   });
 };
 
-function _toArray$3(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }
+function _toArray$4(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }
 
 var shuffle = function shuffle(_ref) {
-  var _ref2 = _toArray$3(_ref),
+  var _ref2 = _toArray$4(_ref),
       arr = _ref2.slice(0);
 
   var m = arr.length;
@@ -1182,10 +1240,10 @@ var similarity = function similarity(arr, values) {
   });
 };
 
-var _typeof$3 = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
+var _typeof$4 = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
 
 var size = function size(value) {
-  return Array.isArray(value) ? value.length : value && (typeof value === 'undefined' ? 'undefined' : _typeof$3(value)) === 'object' ? value.size || value.length || Object.keys(value).length : typeof value === 'string' ? new Blob([value]).size : 0;
+  return Array.isArray(value) ? value.length : value && (typeof value === 'undefined' ? 'undefined' : _typeof$4(value)) === 'object' ? value.size || value.length || Object.keys(value).length : typeof value === 'string' ? new Blob([value]).size : 0;
 };
 
 var sleep = function sleep(ms) {
@@ -1456,7 +1514,7 @@ var zipObject = function zipObject(props, values) {
   }, {});
 };
 
-var imports = { JSONToDate: JSONToDate, JSONToFile: JSONToFile, RGBToHex: RGBToHex, UUIDGeneratorBrowser: UUIDGeneratorBrowser, UUIDGeneratorNode: UUIDGeneratorNode, anagrams: anagrams, arrayToHtmlList: arrayToHtmlList, average: average, bottomVisible: bottomVisible, byteSize: byteSize, call: call, capitalize: capitalize, capitalizeEveryWord: capitalizeEveryWord, chainAsync: chainAsync, chunk: chunk, clampNumber: clampNumber, cleanObj: cleanObj, cloneRegExp: cloneRegExp, coalesce: coalesce, coalesceFactory: coalesceFactory, collatz: collatz, collectInto: collectInto, compact: compact, compose: compose, copyToClipboard: copyToClipboard, countOccurrences: countOccurrences, countVowels: countVowels, currentURL: currentURL, curry: curry, deepFlatten: deepFlatten, defer: defer, detectDeviceType: detectDeviceType, difference: difference, differenceWith: differenceWith, digitize: digitize, distance: distance, distinctValuesOfArray: distinctValuesOfArray, dropElements: dropElements, dropRight: dropRight, elementIsVisibleInViewport: elementIsVisibleInViewport, elo: elo, escapeHTML: escapeHTML, escapeRegExp: escapeRegExp, everyNth: everyNth, extendHex: extendHex, factorial: factorial, factors: factors, fibonacci: fibonacci, fibonacciCountUntilNum: fibonacciCountUntilNum, fibonacciUntilNum: fibonacciUntilNum, filterNonUnique: filterNonUnique, flatten: flatten, flattenDepth: flattenDepth, flip: flip, fromCamelCase: fromCamelCase, functionName: functionName, gcd: gcd, geometricProgression: geometricProgression, getDaysDiffBetweenDates: getDaysDiffBetweenDates, getScrollPosition: getScrollPosition, getStyle: getStyle, getType: getType, getURLParameters: getURLParameters, groupBy: groupBy, hammingDistance: hammingDistance, hasClass: hasClass, hasFlags: hasFlags, head: head, hexToRGB: hexToRGB, hide: hide, howManyTimes: howManyTimes, httpsRedirect: httpsRedirect, inRange: inRange, initial: initial, initialize2DArray: initialize2DArray, initializeArrayWithRange: initializeArrayWithRange, initializeArrayWithValues: initializeArrayWithValues, intersection: intersection, invertKeyValues: invertKeyValues, isAbsoluteURL: isAbsoluteURL, isArmstrongNumber: isArmstrongNumber, isArray: isArray, isArrayLike: isArrayLike, isBoolean: isBoolean, isDivisible: isDivisible, isEven: isEven, isFunction: isFunction, isNull: isNull, isNumber: isNumber, isPrime: isPrime, isPrimitive: isPrimitive, isPromiseLike: isPromiseLike, isSorted: isSorted, isString: isString, isSymbol: isSymbol, isTravisCI: isTravisCI, isValidJSON: isValidJSON, join: join, last: last, lcm: lcm, lowercaseKeys: lowercaseKeys, mapObject: mapObject, mask: mask, maxN: maxN, median: median, memoize: memoize, minN: minN, negate: negate, nthElement: nthElement, objectFromPairs: objectFromPairs, objectToPairs: objectToPairs, onUserInputChange: onUserInputChange, once: once, orderBy: orderBy, palindrome: palindrome, percentile: percentile, pick: pick, pipeFunctions: pipeFunctions, pluralize: pluralize, powerset: powerset, prettyBytes: prettyBytes, primes: primes, promisify: promisify, pull: pull, pullAtIndex: pullAtIndex, pullAtValue: pullAtValue, quickSort: quickSort, randomHexColorCode: randomHexColorCode, randomIntegerInRange: randomIntegerInRange, randomNumberInRange: randomNumberInRange, readFileLines: readFileLines, redirect: redirect, reducedFilter: reducedFilter, remove: remove, repeatString: repeatString, reverseString: reverseString, round: round, runAsync: runAsync, runPromisesInSeries: runPromisesInSeries, sample: sample, sampleSize: sampleSize, scrollToTop: scrollToTop, sdbm: sdbm, select: select, setStyle: setStyle, shallowClone: shallowClone, show: show, shuffle: shuffle, similarity: similarity, size: size, sleep: sleep, solveRPN: solveRPN, sortCharactersInString: sortCharactersInString, sortedIndex: sortedIndex, speechSynthesis: speechSynthesis, splitLines: splitLines, spreadOver: spreadOver, standardDeviation: standardDeviation, sum: sum, sumPower: sumPower, symmetricDifference: symmetricDifference, tail: tail, take: take, takeRight: takeRight, timeTaken: timeTaken, toCamelCase: toCamelCase, toDecimalMark: toDecimalMark, toEnglishDate: toEnglishDate, toKebabCase: toKebabCase, toOrdinalSuffix: toOrdinalSuffix, toSnakeCase: toSnakeCase, toggleClass: toggleClass, tomorrow: tomorrow, truncateString: truncateString, truthCheckCollection: truthCheckCollection, unescapeHTML: unescapeHTML, union: union, untildify: untildify, validateNumber: validateNumber, without: without, words: words, yesNo: yesNo, zip: zip, zipObject: zipObject };
+var imports = { JSONToDate: JSONToDate, JSONToFile: JSONToFile, RGBToHex: RGBToHex, UUIDGeneratorBrowser: UUIDGeneratorBrowser, UUIDGeneratorNode: UUIDGeneratorNode, anagrams: anagrams, arrayToHtmlList: arrayToHtmlList, average: average, bottomVisible: bottomVisible, byteSize: byteSize, call: call, capitalize: capitalize, capitalizeEveryWord: capitalizeEveryWord, chainAsync: chainAsync, chunk: chunk, clampNumber: clampNumber, cleanObj: cleanObj, cloneRegExp: cloneRegExp, coalesce: coalesce, coalesceFactory: coalesceFactory, collatz: collatz, collectInto: collectInto, compact: compact, compose: compose, copyToClipboard: copyToClipboard, countOccurrences: countOccurrences, countVowels: countVowels, currentURL: currentURL, curry: curry, deepFlatten: deepFlatten, defer: defer, detectDeviceType: detectDeviceType, difference: difference, differenceWith: differenceWith, digitize: digitize, distance: distance, distinctValuesOfArray: distinctValuesOfArray, dropElements: dropElements, dropRight: dropRight, elementIsVisibleInViewport: elementIsVisibleInViewport, elo: elo, escapeHTML: escapeHTML, escapeRegExp: escapeRegExp, everyNth: everyNth, extendHex: extendHex, factorial: factorial, factors: factors, fibonacci: fibonacci, fibonacciCountUntilNum: fibonacciCountUntilNum, fibonacciUntilNum: fibonacciUntilNum, filterNonUnique: filterNonUnique, flatten: flatten, flattenDepth: flattenDepth, flip: flip, formatDuration: formatDuration, fromCamelCase: fromCamelCase, functionName: functionName, gcd: gcd, geometricProgression: geometricProgression, getDaysDiffBetweenDates: getDaysDiffBetweenDates, getScrollPosition: getScrollPosition, getStyle: getStyle, getType: getType, getURLParameters: getURLParameters, groupBy: groupBy, hammingDistance: hammingDistance, hasClass: hasClass, hasFlags: hasFlags, head: head, hexToRGB: hexToRGB, hide: hide, howManyTimes: howManyTimes, httpsRedirect: httpsRedirect, inRange: inRange, initial: initial, initialize2DArray: initialize2DArray, initializeArrayWithRange: initializeArrayWithRange, initializeArrayWithValues: initializeArrayWithValues, intersection: intersection, invertKeyValues: invertKeyValues, isAbsoluteURL: isAbsoluteURL, isArmstrongNumber: isArmstrongNumber, isArray: isArray, isArrayLike: isArrayLike, isBoolean: isBoolean, isDivisible: isDivisible, isEven: isEven, isFunction: isFunction, isNull: isNull, isNumber: isNumber, isPrime: isPrime, isPrimitive: isPrimitive, isPromiseLike: isPromiseLike, isSorted: isSorted, isString: isString, isSymbol: isSymbol, isTravisCI: isTravisCI, isValidJSON: isValidJSON, join: join, last: last, lcm: lcm, lowercaseKeys: lowercaseKeys, luhnCheck: luhnCheck, mapObject: mapObject, mask: mask, maxN: maxN, median: median, memoize: memoize, minN: minN, negate: negate, nthElement: nthElement, objectFromPairs: objectFromPairs, objectToPairs: objectToPairs, onUserInputChange: onUserInputChange, once: once, orderBy: orderBy, palindrome: palindrome, percentile: percentile, pick: pick, pipeFunctions: pipeFunctions, pluralize: pluralize, powerset: powerset, prettyBytes: prettyBytes, primes: primes, promisify: promisify, pull: pull, pullAtIndex: pullAtIndex, pullAtValue: pullAtValue, quickSort: quickSort, randomHexColorCode: randomHexColorCode, randomIntegerInRange: randomIntegerInRange, randomNumberInRange: randomNumberInRange, readFileLines: readFileLines, redirect: redirect, reducedFilter: reducedFilter, remove: remove, repeatString: repeatString, reverseString: reverseString, round: round, runAsync: runAsync, runPromisesInSeries: runPromisesInSeries, sample: sample, sampleSize: sampleSize, scrollToTop: scrollToTop, sdbm: sdbm, select: select, setStyle: setStyle, shallowClone: shallowClone, show: show, shuffle: shuffle, similarity: similarity, size: size, sleep: sleep, solveRPN: solveRPN, sortCharactersInString: sortCharactersInString, sortedIndex: sortedIndex, speechSynthesis: speechSynthesis, splitLines: splitLines, spreadOver: spreadOver, standardDeviation: standardDeviation, sum: sum, sumPower: sumPower, symmetricDifference: symmetricDifference, tail: tail, take: take, takeRight: takeRight, timeTaken: timeTaken, toCamelCase: toCamelCase, toDecimalMark: toDecimalMark, toEnglishDate: toEnglishDate, toKebabCase: toKebabCase, toOrdinalSuffix: toOrdinalSuffix, toSnakeCase: toSnakeCase, toggleClass: toggleClass, tomorrow: tomorrow, truncateString: truncateString, truthCheckCollection: truthCheckCollection, unescapeHTML: unescapeHTML, union: union, untildify: untildify, validateNumber: validateNumber, without: without, words: words, yesNo: yesNo, zip: zip, zipObject: zipObject };
 
 return imports;
 
diff --git a/dist/_30s.es5.min.js b/dist/_30s.es5.min.js
index fd54202af..fcad427b8 100644
--- a/dist/_30s.es5.min.js
+++ b/dist/_30s.es5.min.js
@@ -1 +1 @@
-(function(a,b){'object'==typeof exports&&'undefined'!=typeof module?module.exports=b():'function'==typeof define&&define.amd?define(b):a._30s=b()})(this,function(){'use strict';function a(a){return Array.isArray(a)?a:Array.from(a)}function b(a){if(Array.isArray(a)){for(var b=0,c=Array(a.length);b<a.length;b++)c[b]=a[b];return c}return Array.from(a)}function c(a){if(Array.isArray(a)){for(var b=0,c=Array(a.length);b<a.length;b++)c[b]=a[b];return c}return Array.from(a)}function d(a){if(Array.isArray(a)){for(var b=0,c=Array(a.length);b<a.length;b++)c[b]=a[b];return c}return Array.from(a)}function e(a){if(Array.isArray(a)){for(var b=0,c=Array(a.length);b<a.length;b++)c[b]=a[b];return c}return Array.from(a)}function f(a){if(Array.isArray(a)){for(var b=0,c=Array(a.length);b<a.length;b++)c[b]=a[b];return c}return Array.from(a)}function g(a){if(Array.isArray(a)){for(var b=0,c=Array(a.length);b<a.length;b++)c[b]=a[b];return c}return Array.from(a)}function h(a){if(Array.isArray(a)){for(var 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Please check it and try again'},sortCharactersInString:function(a){return a.split('').sort(function(c,a){return c.localeCompare(a)}).join('')},sortedIndex:function(a,b){var c=a[0]>a[a.length-1],d=a.findIndex(function(a){return c?b>=a:b<=a});return-1===d?a.length:d},speechSynthesis:function(a){var b=new SpeechSynthesisUtterance(a);b.voice=window.speechSynthesis.getVoices()[0],window.speechSynthesis.speak(b)},splitLines:function(a){return a.split(/\r?\n/)},spreadOver:function(a){return function(b){return a.apply(void 0,q(b))}},standardDeviation:function(a){var b=1<arguments.length&&arguments[1]!==void 0&&arguments[1],c=a.reduce(function(a,b){return a+b},0)/a.length;return w(a.reduce(function(a,b){return a.concat(y(b-c,2))},[]).reduce(function(a,b){return a+b},0)/(a.length-(b?0:1)))},sum:function(){var a;return(a=[]).concat.apply(a,arguments).reduce(function(a,b){return a+b},0)},sumPower:function(a){var b=1<arguments.length&&arguments[1]!==void 0?arguments[1]:2,c=2<arguments.length&&arguments[2]!==void 0?arguments[2]:1;return Array(a+1-c).fill(0).map(function(a,d){return y(d+c,b)}).reduce(function(c,a){return c+a},0)},symmetricDifference:function(c,a){var b=new Set(c),d=new Set(a);return[].concat(r(c.filter(function(a){return!d.has(a)})),r(a.filter(function(a){return!b.has(a)})))},tail:function(a){return 1<a.length?a.slice(1):a},take:function(a){var b=1<arguments.length&&arguments[1]!==void 0?arguments[1]:1;return a.slice(0,b)},takeRight:function(a){var b=1<arguments.length&&arguments[1]!==void 0?arguments[1]:1;return a.slice(a.length-b,a.length)},timeTaken:function(a){console.time('timeTaken');var b=a();return console.timeEnd('timeTaken'),b},toCamelCase:function(a){var b=a&&a.match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g).map(function(a){return a.slice(0,1).toUpperCase()+a.slice(1).toLowerCase()}).join('');return b.slice(0,1).toLowerCase()+b.slice(1)},toDecimalMark:function(a){return a.toLocaleString('en-US')},toEnglishDate:function(a){try{return new Date(a).toISOString().split('T')[0].replace(/-/g,'/')}catch(a){}},toKebabCase:function(a){return a&&a.match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g).map(function(a){return a.toLowerCase()}).join('-')},toOrdinalSuffix:function(a){var b=parseInt(a),c=[b%10,b%100],d=['st','nd','rd','th'];return[1,2,3,4].includes(c[0])&&![11,12,13,14,15,16,17,18,19].includes(c[1])?b+d[c[0]-1]:b+d[3]},toSnakeCase:function(a){return a&&a.match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g).map(function(a){return a.toLowerCase()}).join('_')},toggleClass:function(a,b){return a.classList.toggle(b)},tomorrow:function(){return new Date(new Date().getTime()+8.64e7).toISOString().split('T')[0]},truncateString:function(a,b){return a.length>b?a.slice(0,3<b?b-3:b)+'...':a},truthCheckCollection:function(a,b){return a.every(function(a){return a[b]})},unescapeHTML:function(a){return a.replace(/&amp;|&lt;|&gt;|&#39;|&quot;/g,function(a){return{"&amp;":'&',"&lt;":'<',"&gt;":'>',"&#39;":'\'',"&quot;":'"'}[a]||a})},union:function(c,a){return Array.from(new Set([].concat(s(c),s(a))))},untildify:function(a){return a.replace(/^~($|\/|\\)/,('undefined'!=typeof require&&require('os').homedir())+'$1')},validateNumber:function(a){return!isNaN(parseFloat(a))&&isFinite(a)&&+a==a},without:function(a){for(var b=arguments.length,c=Array(1<b?b-1:0),d=1;d<b;d++)c[d-1]=arguments[d];return a.filter(function(a){return!c.includes(a)})},words:function(a){var b=1<arguments.length&&arguments[1]!==void 0?arguments[1]:/[^a-zA-Z-]+/;return a.split(b).filter(Boolean)},yesNo:function(a){var b=1<arguments.length&&arguments[1]!==void 0&&arguments[1];return!!/^(y|yes)$/i.test(a)||!/^(n|no)$/i.test(a)&&b},zip:function(){for(var a=arguments.length,b=Array(a),c=0;c<a;c++)b[c]=arguments[c];var d=z.apply(Math,t(b.map(function(a){return a.length})));return Array.from({length:d}).map(function(a,c){return Array.from({length:b.length},function(a,d){return b[d][c]})})},zipObject:function(a,b){return a.reduce(function(a,c,d){return a[c]=b[d],a},{})}}});
diff --git a/dist/_30s.esm.js b/dist/_30s.esm.js
index e1a0c6863..7cf6c7f0c 100644
--- a/dist/_30s.esm.js
+++ b/dist/_30s.esm.js
@@ -131,7 +131,7 @@ const difference = (a, b) => {
   return a.filter(x => !s.has(x));
 };
 
-const differenceWith = (arr, val, comp) => arr.filter(a => !val.find(b => comp(a, b)));
+const differenceWith = (arr, val, comp) => arr.filter(a => val.findIndex(b => comp(a, b)) === -1);
 
 const digitize = n => [...('' + n)].map(i => parseInt(i));
 
@@ -155,10 +155,23 @@ const elementIsVisibleInViewport = (el, partiallyVisible = false) => {
     : top >= 0 && left >= 0 && bottom <= innerHeight && right <= innerWidth;
 };
 
-const elo = ([a, b], kFactor = 32) => {
+const elo = ([...ratings], kFactor = 32, selfRating) => {
+  const [a, b] = ratings;
   const expectedScore = (self, opponent) => 1 / (1 + 10 ** ((opponent - self) / 400));
-  const newRating = (rating, i) => rating + kFactor * (i - expectedScore(i ? a : b, i ? b : a));
-  return [newRating(a, 1), newRating(b, 0)];
+  const newRating = (rating, i) =>
+    (selfRating || rating) + kFactor * (i - expectedScore(i ? a : b, i ? b : a));
+  if (ratings.length === 2) {
+    return [newRating(a, 1), newRating(b, 0)];
+  } else {
+    for (let i = 0; i < ratings.length; i++) {
+      let j = i;
+      while (j < ratings.length - 1) {
+        [ratings[i], ratings[j + 1]] = elo([ratings[i], ratings[j + 1]], kFactor);
+        j++;
+      }
+    }
+  }
+  return ratings;
 };
 
 const escapeHTML = str =>
@@ -241,6 +254,21 @@ const flattenDepth = (arr, depth = 1) =>
 
 const flip = fn => (...args) => fn(args.pop(), ...args);
 
+const formatDuration = ms => {
+  if (ms < 0) ms = -ms;
+  const time = {
+    day: Math.floor(ms / 86400000),
+    hour: Math.floor(ms / 3600000) % 24,
+    minute: Math.floor(ms / 60000) % 60,
+    second: Math.floor(ms / 1000) % 60,
+    millisecond: Math.floor(ms) % 1000
+  };
+  return Object.entries(time)
+    .filter(val => val[1] !== 0)
+    .map(val => val[1] + ' ' + (val[1] !== 1 ? val[0] + 's' : val[0]))
+    .join(', ');
+};
+
 const fromCamelCase = (str, separator = '_') =>
   str
     .replace(/([a-z\d])([A-Z])/g, '$1' + separator + '$2')
@@ -250,9 +278,8 @@ const fromCamelCase = (str, separator = '_') =>
 const functionName = fn => (console.debug(fn.name), fn);
 
 const gcd = (...arr) => {
-  let data = [].concat(...arr);
-  const helperGcd = (x, y) => (!y ? x : gcd(y, x % y));
-  return data.reduce((a, b) => helperGcd(a, b));
+  const _gcd = (x, y) => (!y ? x : gcd(y, x % y));
+  return [].concat(...arr).reduce((a, b) => _gcd(a, b));
 };
 
 const geometricProgression = (end, start = 1, step = 2) =>
@@ -381,7 +408,7 @@ const isDivisible = (dividend, divisor) => dividend % divisor === 0;
 
 const isEven = num => num % 2 === 0;
 
-const isFunction = val => val && typeof val === 'function';
+const isFunction = val => typeof val === 'function';
 
 const isNull = val => val === null;
 
@@ -445,6 +472,17 @@ const lowercaseKeys = obj =>
     return acc;
   }, {});
 
+const luhnCheck = num => {
+  let arr = (num + '')
+    .split('')
+    .reverse()
+    .map(x => parseInt(x));
+  let lastDigit = arr.splice(0, 1)[0];
+  let sum = arr.reduce((acc, val, i) => (i % 2 !== 0 ? acc + val : acc + (val * 2) % 9 || 9), 0);
+  sum += lastDigit;
+  return sum % 10 === 0;
+};
+
 const mapObject = (arr, fn) =>
   (a => (
     a = [arr, arr.map(fn)], a[0].reduce((acc, val, ind) => (acc[val] = a[1][ind], acc), {})))();
@@ -533,12 +571,12 @@ const pick = (obj, arr) =>
 
 const pipeFunctions = (...fns) => fns.reduce((f, g) => (...args) => g(f(...args)));
 
-const pluralize = (num, item, items = item + 's') =>
-  num <= 0
-    ? (() => {
-        throw new Error(`'num' should be >= 1. Value povided was ${num}.`);
-      })()
-    : num === 1 ? item : items;
+const pluralize = (val, word, plural = word + 's') => {
+  const _pluralize = (num, word, plural = word + 's') =>
+    [1, -1].includes(Number(num)) ? word : plural;
+  if (typeof val === 'object') return (num, word) => _pluralize(num, word, val[word]);
+  return _pluralize(val, word, plural);
+};
 
 const powerset = arr => arr.reduce((a, v) => a.concat(a.map(r => [v].concat(r))), [[]]);
 
@@ -898,6 +936,6 @@ const zip = (...arrays) => {
 const zipObject = (props, values) =>
   props.reduce((obj, prop, index) => (obj[prop] = values[index], obj), {});
 
-var imports = {JSONToDate,JSONToFile,RGBToHex,UUIDGeneratorBrowser,UUIDGeneratorNode,anagrams,arrayToHtmlList,average,bottomVisible,byteSize,call,capitalize,capitalizeEveryWord,chainAsync,chunk,clampNumber,cleanObj,cloneRegExp,coalesce,coalesceFactory,collatz,collectInto,compact,compose,copyToClipboard,countOccurrences,countVowels,currentURL,curry,deepFlatten,defer,detectDeviceType,difference,differenceWith,digitize,distance,distinctValuesOfArray,dropElements,dropRight,elementIsVisibleInViewport,elo,escapeHTML,escapeRegExp,everyNth,extendHex,factorial,factors,fibonacci,fibonacciCountUntilNum,fibonacciUntilNum,filterNonUnique,flatten,flattenDepth,flip,fromCamelCase,functionName,gcd,geometricProgression,getDaysDiffBetweenDates,getScrollPosition,getStyle,getType,getURLParameters,groupBy,hammingDistance,hasClass,hasFlags,head,hexToRGB,hide,howManyTimes,httpsRedirect,inRange,initial,initialize2DArray,initializeArrayWithRange,initializeArrayWithValues,intersection,invertKeyValues,isAbsoluteURL,isArmstrongNumber,isArray,isArrayLike,isBoolean,isDivisible,isEven,isFunction,isNull,isNumber,isPrime,isPrimitive,isPromiseLike,isSorted,isString,isSymbol,isTravisCI,isValidJSON,join,last,lcm,lowercaseKeys,mapObject,mask,maxN,median,memoize,minN,negate,nthElement,objectFromPairs,objectToPairs,onUserInputChange,once,orderBy,palindrome,percentile,pick,pipeFunctions,pluralize,powerset,prettyBytes,primes,promisify,pull,pullAtIndex,pullAtValue,quickSort,randomHexColorCode,randomIntegerInRange,randomNumberInRange,readFileLines,redirect,reducedFilter,remove,repeatString,reverseString,round,runAsync,runPromisesInSeries,sample,sampleSize,scrollToTop,sdbm,select,setStyle,shallowClone,show,shuffle,similarity,size,sleep,solveRPN,sortCharactersInString,sortedIndex,speechSynthesis,splitLines,spreadOver,standardDeviation,sum,sumPower,symmetricDifference,tail,take,takeRight,timeTaken,toCamelCase,toDecimalMark,toEnglishDate,toKebabCase,toOrdinalSuffix,toSnakeCase,toggleClass,tomorrow,truncateString,truthCheckCollection,unescapeHTML,union,untildify,validateNumber,without,words,yesNo,zip,zipObject,}
+var imports = {JSONToDate,JSONToFile,RGBToHex,UUIDGeneratorBrowser,UUIDGeneratorNode,anagrams,arrayToHtmlList,average,bottomVisible,byteSize,call,capitalize,capitalizeEveryWord,chainAsync,chunk,clampNumber,cleanObj,cloneRegExp,coalesce,coalesceFactory,collatz,collectInto,compact,compose,copyToClipboard,countOccurrences,countVowels,currentURL,curry,deepFlatten,defer,detectDeviceType,difference,differenceWith,digitize,distance,distinctValuesOfArray,dropElements,dropRight,elementIsVisibleInViewport,elo,escapeHTML,escapeRegExp,everyNth,extendHex,factorial,factors,fibonacci,fibonacciCountUntilNum,fibonacciUntilNum,filterNonUnique,flatten,flattenDepth,flip,formatDuration,fromCamelCase,functionName,gcd,geometricProgression,getDaysDiffBetweenDates,getScrollPosition,getStyle,getType,getURLParameters,groupBy,hammingDistance,hasClass,hasFlags,head,hexToRGB,hide,howManyTimes,httpsRedirect,inRange,initial,initialize2DArray,initializeArrayWithRange,initializeArrayWithValues,intersection,invertKeyValues,isAbsoluteURL,isArmstrongNumber,isArray,isArrayLike,isBoolean,isDivisible,isEven,isFunction,isNull,isNumber,isPrime,isPrimitive,isPromiseLike,isSorted,isString,isSymbol,isTravisCI,isValidJSON,join,last,lcm,lowercaseKeys,luhnCheck,mapObject,mask,maxN,median,memoize,minN,negate,nthElement,objectFromPairs,objectToPairs,onUserInputChange,once,orderBy,palindrome,percentile,pick,pipeFunctions,pluralize,powerset,prettyBytes,primes,promisify,pull,pullAtIndex,pullAtValue,quickSort,randomHexColorCode,randomIntegerInRange,randomNumberInRange,readFileLines,redirect,reducedFilter,remove,repeatString,reverseString,round,runAsync,runPromisesInSeries,sample,sampleSize,scrollToTop,sdbm,select,setStyle,shallowClone,show,shuffle,similarity,size,sleep,solveRPN,sortCharactersInString,sortedIndex,speechSynthesis,splitLines,spreadOver,standardDeviation,sum,sumPower,symmetricDifference,tail,take,takeRight,timeTaken,toCamelCase,toDecimalMark,toEnglishDate,toKebabCase,toOrdinalSuffix,toSnakeCase,toggleClass,tomorrow,truncateString,truthCheckCollection,unescapeHTML,union,untildify,validateNumber,without,words,yesNo,zip,zipObject,}
 
 export default imports;
diff --git a/dist/_30s.js b/dist/_30s.js
index e166b4773..a6d37a996 100644
--- a/dist/_30s.js
+++ b/dist/_30s.js
@@ -137,7 +137,7 @@ const difference = (a, b) => {
   return a.filter(x => !s.has(x));
 };
 
-const differenceWith = (arr, val, comp) => arr.filter(a => !val.find(b => comp(a, b)));
+const differenceWith = (arr, val, comp) => arr.filter(a => val.findIndex(b => comp(a, b)) === -1);
 
 const digitize = n => [...('' + n)].map(i => parseInt(i));
 
@@ -161,10 +161,23 @@ const elementIsVisibleInViewport = (el, partiallyVisible = false) => {
     : top >= 0 && left >= 0 && bottom <= innerHeight && right <= innerWidth;
 };
 
-const elo = ([a, b], kFactor = 32) => {
+const elo = ([...ratings], kFactor = 32, selfRating) => {
+  const [a, b] = ratings;
   const expectedScore = (self, opponent) => 1 / (1 + 10 ** ((opponent - self) / 400));
-  const newRating = (rating, i) => rating + kFactor * (i - expectedScore(i ? a : b, i ? b : a));
-  return [newRating(a, 1), newRating(b, 0)];
+  const newRating = (rating, i) =>
+    (selfRating || rating) + kFactor * (i - expectedScore(i ? a : b, i ? b : a));
+  if (ratings.length === 2) {
+    return [newRating(a, 1), newRating(b, 0)];
+  } else {
+    for (let i = 0; i < ratings.length; i++) {
+      let j = i;
+      while (j < ratings.length - 1) {
+        [ratings[i], ratings[j + 1]] = elo([ratings[i], ratings[j + 1]], kFactor);
+        j++;
+      }
+    }
+  }
+  return ratings;
 };
 
 const escapeHTML = str =>
@@ -247,6 +260,21 @@ const flattenDepth = (arr, depth = 1) =>
 
 const flip = fn => (...args) => fn(args.pop(), ...args);
 
+const formatDuration = ms => {
+  if (ms < 0) ms = -ms;
+  const time = {
+    day: Math.floor(ms / 86400000),
+    hour: Math.floor(ms / 3600000) % 24,
+    minute: Math.floor(ms / 60000) % 60,
+    second: Math.floor(ms / 1000) % 60,
+    millisecond: Math.floor(ms) % 1000
+  };
+  return Object.entries(time)
+    .filter(val => val[1] !== 0)
+    .map(val => val[1] + ' ' + (val[1] !== 1 ? val[0] + 's' : val[0]))
+    .join(', ');
+};
+
 const fromCamelCase = (str, separator = '_') =>
   str
     .replace(/([a-z\d])([A-Z])/g, '$1' + separator + '$2')
@@ -256,9 +284,8 @@ const fromCamelCase = (str, separator = '_') =>
 const functionName = fn => (console.debug(fn.name), fn);
 
 const gcd = (...arr) => {
-  let data = [].concat(...arr);
-  const helperGcd = (x, y) => (!y ? x : gcd(y, x % y));
-  return data.reduce((a, b) => helperGcd(a, b));
+  const _gcd = (x, y) => (!y ? x : gcd(y, x % y));
+  return [].concat(...arr).reduce((a, b) => _gcd(a, b));
 };
 
 const geometricProgression = (end, start = 1, step = 2) =>
@@ -387,7 +414,7 @@ const isDivisible = (dividend, divisor) => dividend % divisor === 0;
 
 const isEven = num => num % 2 === 0;
 
-const isFunction = val => val && typeof val === 'function';
+const isFunction = val => typeof val === 'function';
 
 const isNull = val => val === null;
 
@@ -451,6 +478,17 @@ const lowercaseKeys = obj =>
     return acc;
   }, {});
 
+const luhnCheck = num => {
+  let arr = (num + '')
+    .split('')
+    .reverse()
+    .map(x => parseInt(x));
+  let lastDigit = arr.splice(0, 1)[0];
+  let sum = arr.reduce((acc, val, i) => (i % 2 !== 0 ? acc + val : acc + (val * 2) % 9 || 9), 0);
+  sum += lastDigit;
+  return sum % 10 === 0;
+};
+
 const mapObject = (arr, fn) =>
   (a => (
     a = [arr, arr.map(fn)], a[0].reduce((acc, val, ind) => (acc[val] = a[1][ind], acc), {})))();
@@ -539,12 +577,12 @@ const pick = (obj, arr) =>
 
 const pipeFunctions = (...fns) => fns.reduce((f, g) => (...args) => g(f(...args)));
 
-const pluralize = (num, item, items = item + 's') =>
-  num <= 0
-    ? (() => {
-        throw new Error(`'num' should be >= 1. Value povided was ${num}.`);
-      })()
-    : num === 1 ? item : items;
+const pluralize = (val, word, plural = word + 's') => {
+  const _pluralize = (num, word, plural = word + 's') =>
+    [1, -1].includes(Number(num)) ? word : plural;
+  if (typeof val === 'object') return (num, word) => _pluralize(num, word, val[word]);
+  return _pluralize(val, word, plural);
+};
 
 const powerset = arr => arr.reduce((a, v) => a.concat(a.map(r => [v].concat(r))), [[]]);
 
@@ -904,7 +942,7 @@ const zip = (...arrays) => {
 const zipObject = (props, values) =>
   props.reduce((obj, prop, index) => (obj[prop] = values[index], obj), {});
 
-var imports = {JSONToDate,JSONToFile,RGBToHex,UUIDGeneratorBrowser,UUIDGeneratorNode,anagrams,arrayToHtmlList,average,bottomVisible,byteSize,call,capitalize,capitalizeEveryWord,chainAsync,chunk,clampNumber,cleanObj,cloneRegExp,coalesce,coalesceFactory,collatz,collectInto,compact,compose,copyToClipboard,countOccurrences,countVowels,currentURL,curry,deepFlatten,defer,detectDeviceType,difference,differenceWith,digitize,distance,distinctValuesOfArray,dropElements,dropRight,elementIsVisibleInViewport,elo,escapeHTML,escapeRegExp,everyNth,extendHex,factorial,factors,fibonacci,fibonacciCountUntilNum,fibonacciUntilNum,filterNonUnique,flatten,flattenDepth,flip,fromCamelCase,functionName,gcd,geometricProgression,getDaysDiffBetweenDates,getScrollPosition,getStyle,getType,getURLParameters,groupBy,hammingDistance,hasClass,hasFlags,head,hexToRGB,hide,howManyTimes,httpsRedirect,inRange,initial,initialize2DArray,initializeArrayWithRange,initializeArrayWithValues,intersection,invertKeyValues,isAbsoluteURL,isArmstrongNumber,isArray,isArrayLike,isBoolean,isDivisible,isEven,isFunction,isNull,isNumber,isPrime,isPrimitive,isPromiseLike,isSorted,isString,isSymbol,isTravisCI,isValidJSON,join,last,lcm,lowercaseKeys,mapObject,mask,maxN,median,memoize,minN,negate,nthElement,objectFromPairs,objectToPairs,onUserInputChange,once,orderBy,palindrome,percentile,pick,pipeFunctions,pluralize,powerset,prettyBytes,primes,promisify,pull,pullAtIndex,pullAtValue,quickSort,randomHexColorCode,randomIntegerInRange,randomNumberInRange,readFileLines,redirect,reducedFilter,remove,repeatString,reverseString,round,runAsync,runPromisesInSeries,sample,sampleSize,scrollToTop,sdbm,select,setStyle,shallowClone,show,shuffle,similarity,size,sleep,solveRPN,sortCharactersInString,sortedIndex,speechSynthesis,splitLines,spreadOver,standardDeviation,sum,sumPower,symmetricDifference,tail,take,takeRight,timeTaken,toCamelCase,toDecimalMark,toEnglishDate,toKebabCase,toOrdinalSuffix,toSnakeCase,toggleClass,tomorrow,truncateString,truthCheckCollection,unescapeHTML,union,untildify,validateNumber,without,words,yesNo,zip,zipObject,}
+var imports = {JSONToDate,JSONToFile,RGBToHex,UUIDGeneratorBrowser,UUIDGeneratorNode,anagrams,arrayToHtmlList,average,bottomVisible,byteSize,call,capitalize,capitalizeEveryWord,chainAsync,chunk,clampNumber,cleanObj,cloneRegExp,coalesce,coalesceFactory,collatz,collectInto,compact,compose,copyToClipboard,countOccurrences,countVowels,currentURL,curry,deepFlatten,defer,detectDeviceType,difference,differenceWith,digitize,distance,distinctValuesOfArray,dropElements,dropRight,elementIsVisibleInViewport,elo,escapeHTML,escapeRegExp,everyNth,extendHex,factorial,factors,fibonacci,fibonacciCountUntilNum,fibonacciUntilNum,filterNonUnique,flatten,flattenDepth,flip,formatDuration,fromCamelCase,functionName,gcd,geometricProgression,getDaysDiffBetweenDates,getScrollPosition,getStyle,getType,getURLParameters,groupBy,hammingDistance,hasClass,hasFlags,head,hexToRGB,hide,howManyTimes,httpsRedirect,inRange,initial,initialize2DArray,initializeArrayWithRange,initializeArrayWithValues,intersection,invertKeyValues,isAbsoluteURL,isArmstrongNumber,isArray,isArrayLike,isBoolean,isDivisible,isEven,isFunction,isNull,isNumber,isPrime,isPrimitive,isPromiseLike,isSorted,isString,isSymbol,isTravisCI,isValidJSON,join,last,lcm,lowercaseKeys,luhnCheck,mapObject,mask,maxN,median,memoize,minN,negate,nthElement,objectFromPairs,objectToPairs,onUserInputChange,once,orderBy,palindrome,percentile,pick,pipeFunctions,pluralize,powerset,prettyBytes,primes,promisify,pull,pullAtIndex,pullAtValue,quickSort,randomHexColorCode,randomIntegerInRange,randomNumberInRange,readFileLines,redirect,reducedFilter,remove,repeatString,reverseString,round,runAsync,runPromisesInSeries,sample,sampleSize,scrollToTop,sdbm,select,setStyle,shallowClone,show,shuffle,similarity,size,sleep,solveRPN,sortCharactersInString,sortedIndex,speechSynthesis,splitLines,spreadOver,standardDeviation,sum,sumPower,symmetricDifference,tail,take,takeRight,timeTaken,toCamelCase,toDecimalMark,toEnglishDate,toKebabCase,toOrdinalSuffix,toSnakeCase,toggleClass,tomorrow,truncateString,truthCheckCollection,unescapeHTML,union,untildify,validateNumber,without,words,yesNo,zip,zipObject,}
 
 return imports;
 
diff --git a/dist/_30s.min.js b/dist/_30s.min.js
index 2b01214d3..834c6b5f5 100644
--- a/dist/_30s.min.js
+++ b/dist/_30s.min.js
@@ -1 +1 @@
-(function(a,b){'object'==typeof exports&&'undefined'!=typeof module?module.exports=b():'function'==typeof define&&define.amd?define(b):a._30s=b()})(this,function(){'use strict';var a=Math.log,b=Math.floor,c=Math.sqrt,d=Math.min,e=Math.max,f=Math.ceil;const g='undefined'!=typeof require&&require('fs'),h='undefined'!=typeof require&&require('crypto'),j=(a)=>2>=a.length?2===a.length?[a,a[1]+a[0]]:[a]:a.split('').reduce((b,c,d)=>b.concat(j(a.slice(0,d)+a.slice(d+1)).map((a)=>c+a)),[]),i=(a,b=[],c)=>(Object.keys(a).forEach((d)=>{d===c?i(a[d],b,c):!b.includes(d)&&delete a[d]}),a),k=(a,b=a.length,...c)=>b<=c.length?a(...c):k.bind(null,a,b,...c),l=(a)=>[].concat(...a.map((a)=>Array.isArray(a)?l(a):a)),m=(a)=>0>a?(()=>{throw new TypeError('Negative numbers are not allowed!')})():1>=a?1:a*m(a-1),n=(a,b=1)=>1==b?a.reduce((b,a)=>b.concat(a),[]):a.reduce((c,a)=>c.concat(Array.isArray(a)?n(a,b-1):a),[]),o=(...a)=>{let b=[].concat(...a);const c=(a,b)=>b?o(b,a%b):a;return b.reduce((d,a)=>c(d,a))},p=([a,...b],c)=>isNaN(a)?[]:[...p(b.filter((b)=>c?b>a:b<=a),c),a,...p(b.filter((b)=>c?b<=a:b>a),c)],q='undefined'!=typeof require&&require('fs'),r=()=>{const a=document.documentElement.scrollTop||document.body.scrollTop;0<a&&(window.requestAnimationFrame(r),window.scrollTo(0,a-a/8))};return{JSONToDate:(a)=>{const b=new Date(parseInt(a.toString().substr(6)));return`${b.getDate()}/${b.getMonth()+1}/${b.getFullYear()}`},JSONToFile:(a,b)=>g.writeFile(`${b}.json`,JSON.stringify(a,null,2)),RGBToHex:(a,c,d)=>((a<<16)+(c<<8)+d).toString(16).padStart(6,'0'),UUIDGeneratorBrowser:()=>'10000000-1000-4000-8000-100000000000'.replace(/[018]/g,(a)=>(a^crypto.getRandomValues(new Uint8Array(1))[0]&15>>a/4).toString(16)),UUIDGeneratorNode:()=>'10000000-1000-4000-8000-100000000000'.replace(/[018]/g,(a)=>(a^h.randomBytes(1)[0]&15>>a/4).toString(16)),anagrams:j,arrayToHtmlList:(a,b)=>a.map((a)=>document.querySelector('#'+b).innerHTML+=`<li>${a}</li>`),average:(...a)=>{const b=[].concat(...a);return b.reduce((a,b)=>a+b,0)/b.length},bottomVisible:()=>document.documentElement.clientHeight+window.scrollY>=(document.documentElement.scrollHeight||document.documentElement.clientHeight),byteSize:(a)=>new Blob([a]).size,call:(a,...b)=>(c)=>c[a](...b),capitalize:([a,...b],c=!1)=>a.toUpperCase()+(c?b.join('').toLowerCase():b.join('')),capitalizeEveryWord:(a)=>a.replace(/\b[a-z]/g,(a)=>a.toUpperCase()),chainAsync:(a)=>{let b=0;const c=()=>a[b++](c);c()},chunk:(a,b)=>Array.from({length:f(a.length/b)},(c,d)=>a.slice(d*b,d*b+b)),clampNumber:(c,f,a)=>e(d(c,e(f,a)),d(f,a)),cleanObj:i,cloneRegExp:(a)=>new RegExp(a.source,a.flags),coalesce:(...a)=>a.find((a)=>![void 0,null].includes(a)),coalesceFactory:(a)=>(...b)=>b.find(a),collatz:(a)=>0==a%2?a/2:3*a+1,collectInto:(a)=>(...b)=>a(b),compact:(a)=>a.filter(Boolean),compose:(...a)=>a.reduce((a,b)=>(...c)=>a(b(...c))),copyToClipboard:(a)=>{const b=document.createElement('textarea');b.value=a,b.setAttribute('readonly',''),b.style.position='absolute',b.style.left='-9999px',document.body.appendChild(b);const c=!!(0<document.getSelection().rangeCount)&&document.getSelection().getRangeAt(0);b.select(),document.execCommand('copy'),document.body.removeChild(b),c&&(document.getSelection().removeAllRanges(),document.getSelection().addRange(c))},countOccurrences:(a,b)=>a.reduce((c,a)=>a===b?c+1:c+0,0),countVowels:(a)=>(a.match(/[aeiou]/gi)||[]).length,currentURL:()=>window.location.href,curry:k,deepFlatten:l,defer:(a,...b)=>setTimeout(a,1,...b),detectDeviceType:()=>/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)?'Mobile':'Desktop',difference:(c,a)=>{const b=new Set(a);return c.filter((a)=>!b.has(a))},differenceWith:(a,b,c)=>a.filter((d)=>!b.find((a)=>c(d,a))),digitize:(a)=>[...(''+a)].map((a)=>parseInt(a)),distance:(a,b,c,d)=>Math.hypot(c-a,d-b),distinctValuesOfArray:(a)=>[...new Set(a)],dropElements:(a,b)=>{for(;0<a.length&&!b(a[0]);)a=a.slice(1);return a},dropRight:(a,b=1)=>a.slice(0,-b),elementIsVisibleInViewport:(a,b=!1)=>{const{top:c,left:d,bottom:e,right:f}=a.getBoundingClientRect(),{innerHeight:g,innerWidth:h}=window;return b?(0<c&&c<g||0<e&&e<g)&&(0<d&&d<h||0<f&&f<h):0<=c&&0<=d&&e<=g&&f<=h},elo:([c,a],b=32)=>{const d=(a,b)=>1/(1+10**((b-a)/400)),e=(e,f)=>e+b*(f-d(f?c:a,f?a:c));return[e(c,1),e(a,0)]},escapeHTML:(a)=>a.replace(/[&<>'"]/g,(a)=>({"&":'&amp;',"<":'&lt;',">":'&gt;',"'":'&#39;','"':'&quot;'})[a]||a),escapeRegExp:(a)=>a.replace(/[.*+?^${}()|[\]\\]/g,'\\$&'),everyNth:(a,b)=>a.filter((a,c)=>c%b==b-1),extendHex:(a)=>'#'+a.slice(a.startsWith('#')?1:0).split('').map((a)=>a+a).join(''),factorial:m,factors:(a,d=!1)=>{const e=0>a;a=e?-a:a;let f=Array.from({length:a-1}).map((b,c)=>0==a%(c+2)&&c+2).filter((a)=>a);return e&&(f=f.reduce((a,b)=>(a.push(b),a.push(-b),a),[])),d?f.filter((a)=>{const d=b(c(a));for(var e=2;e<=d;e++)if(0==a%e)return!1;return 2<=a}):f},fibonacci:(a)=>Array.from({length:a}).reduce((a,b,c)=>a.concat(1<c?a[c-1]+a[c-2]:c),[]),fibonacciCountUntilNum:(b)=>f(a(2.23606797749979*b+1/2)/0.48121182505960347),fibonacciUntilNum:(b)=>{let c=f(a(2.23606797749979*b+1/2)/0.48121182505960347);return Array.from({length:c}).reduce((a,b,c)=>a.concat(1<c?a[c-1]+a[c-2]:c),[])},filterNonUnique:(a)=>a.filter((b)=>a.indexOf(b)===a.lastIndexOf(b)),flatten:(a)=>[].concat(...a),flattenDepth:n,flip:(a)=>(...b)=>a(b.pop(),...b),fromCamelCase:(a,b='_')=>a.replace(/([a-z\d])([A-Z])/g,'$1'+b+'$2').replace(/([A-Z]+)([A-Z][a-z\d]+)/g,'$1'+b+'$2').toLowerCase(),functionName:(a)=>(console.debug(a.name),a),gcd:o,geometricProgression:(c,d=1,e=2)=>Array.from({length:b(a(c/d)/a(e))+1}).map((a,b)=>d*e**b),getDaysDiffBetweenDates:(a,b)=>(b-a)/86400000,getScrollPosition:(a=window)=>({x:a.pageXOffset===void 0?a.scrollLeft:a.pageXOffset,y:a.pageYOffset===void 0?a.scrollTop:a.pageYOffset}),getStyle:(a,b)=>getComputedStyle(a)[b],getType:(a)=>a===void 0?'undefined':null===a?'null':a.constructor.name.toLowerCase(),getURLParameters:(a)=>a.match(/([^?=&]+)(=([^&]*))/g).reduce((b,a)=>(b[a.slice(0,a.indexOf('='))]=a.slice(a.indexOf('=')+1),b),{}),groupBy:(a,b)=>a.map('function'==typeof b?b:(a)=>a[b]).reduce((b,c,d)=>(b[c]=(b[c]||[]).concat(a[d]),b),{}),hammingDistance:(a,b)=>((a^b).toString(2).match(/1/g)||'').length,hasClass:(a,b)=>a.classList.contains(b),hasFlags:(...a)=>a.every((a)=>process.argv.includes(/^-{1,2}/.test(a)?a:'--'+a)),head:(a)=>a[0],hexToRGB:(a)=>{let b=!1,c=a.slice(a.startsWith('#')?1:0);return 3===c.length?c=[...c].map((a)=>a+a).join(''):8===c.length&&(b=!0),c=parseInt(c,16),'rgb'+(b?'a':'')+'('+(c>>>(b?24:16))+', '+((c&(b?16711680:65280))>>>(b?16:8))+', '+((c&(b?65280:255))>>>(b?8:0))+(b?`, ${255&c}`:'')+')'},hide:(...a)=>[...a].forEach((a)=>a.style.display='none'),howManyTimes:(a,b)=>{if(1===b||-1===b)return Infinity;if(0===b)return 0;let c=0;for(;Number.isInteger(a/b);)c++,a/=b;return c},httpsRedirect:()=>{'https:'!==location.protocol&&location.replace('https://'+location.href.split('//')[1])},inRange:(a,b,c=null)=>(c&&b>c&&(c=b),null==c?0<=a&&a<b:a>=b&&a<c),initial:(a)=>a.slice(0,-1),initialize2DArray:(a,b,c=null)=>Array(b).fill().map(()=>Array(a).fill(c)),initializeArrayWithRange:(a,b=0,c=1)=>Array.from({length:f((a+1-b)/c)}).map((a,d)=>d*c+b),initializeArrayWithValues:(a,b=0)=>Array(a).fill(b),intersection:(c,a)=>{const b=new Set(a);return c.filter((a)=>b.has(a))},invertKeyValues:(a)=>Object.keys(a).reduce((b,c)=>(b[a[c]]=c,b),{}),isAbsoluteURL:(a)=>/^[a-z][a-z0-9+.-]*:/.test(a),isArmstrongNumber:(a)=>((b)=>b.reduce((c,a)=>c+parseInt(a)**b.length,0)==a)((a+'').split('')),isArray:(a)=>!!a&&Array.isArray(a),isArrayLike:(a)=>{try{return[...a],!0}catch(a){return!1}},isBoolean:(a)=>'boolean'==typeof a,isDivisible:(a,b)=>0==a%b,isEven:(a)=>0==a%2,isFunction:(a)=>a&&'function'==typeof a,isNull:(a)=>null===a,isNumber:(a)=>'number'==typeof a,isPrime:(a)=>{const 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diff --git a/docs/index.html b/docs/index.html
index b186768df..b24a19120 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -1,11 +1,15 @@
 <!DOCTYPE html><html lang="en"><head><link rel="stylesheet" href="./mini.css"><title>30 seconds of code</title><meta charset="utf-8"><meta name="description" content="Curated collection of useful Javascript snippets that you can understand in 30 seconds or less."><meta name="keywords" content="javascript, snippets, code, programming"><meta name="author" content="Angelos Chalaris (chalarangelo@gmail.com)"><meta name="viewport" content="width=device-width,initial-scale=1"><meta property="og:title" content="30 seconds of code"><meta property="og:description" content="Curated collection of useful Javascript snippets that you can understand in 30 seconds or less."/><meta property="og:type" content="website"/><meta property="og:image" content="favicon.png"><link rel="icon" type="image/png" href="favicon.png"><script>const search = (node) => {
+        let matchingTags = [];
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+          let data = [x.innerText.toLowerCase(), ...x.getAttribute('tags').split(',')].map(v => !!(v.indexOf(node.value.toLowerCase()) + 1));
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@@ -36,7 +40,7 @@
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-      }</script></head><body onload="loader()"><a href="https://github.com/Chalarangelo/30-seconds-of-code" class="github-corner" aria-label="View source on Github"><svg width="90" height="90" viewBox="0 0 250 250" style="fill:#151513;color:#fff;position:absolute;top:0;border:0;right:0" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin:130px 106px" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style><header style="height:5.5rem"><h1 class="logo"><img src="favicon.png" style="height:4rem" alt="logo"/><span id="title">&nbsp;30 seconds of code</span> <small>Curated collection of useful JavaScript snippets that you can understand in 30 seconds or less.</small></h1><label for="doc-drawer-checkbox" class="button drawer-toggle" id="menu-toggle"></label></header><div class="row" style="height:calc(100vh - 5.875rem);overflow:hidden"><input id="doc-drawer-checkbox" class="drawer" value="on" type="checkbox"><nav class="col-md-4 col-lg-3" style="border-top:0"><div class="group"><input class="search" type="text" id="searchInput" onkeyup="search(this)"><label id="search-label">Search for snippet...</label></div><label for="doc-drawer-checkbox" class="button drawer-close"></label><h3>Adapter</h3><a class="sublink-1" href="#call">call</a> <a class="sublink-1" href="#collectinto">collectInto</a> <a class="sublink-1" href="#flip">flip</a> <a class="sublink-1" href="#pipefunctions">pipeFunctions</a> <a class="sublink-1" href="#promisify">promisify</a> <a class="sublink-1" href="#spreadover">spreadOver</a><h3>Array</h3><a class="sublink-1" href="#chunk">chunk</a> <a class="sublink-1" href="#compact">compact</a> <a class="sublink-1" href="#countoccurrences">countOccurrences</a> <a class="sublink-1" href="#deepflatten">deepFlatten</a> <a class="sublink-1" href="#difference">difference</a> <a class="sublink-1" href="#differencewith">differenceWith</a> <a class="sublink-1" href="#distinctvaluesofarray">distinctValuesOfArray</a> <a class="sublink-1" href="#dropelements">dropElements</a> <a class="sublink-1" href="#dropright">dropRight</a> <a class="sublink-1" href="#everynth">everyNth</a> <a class="sublink-1" href="#filternonunique">filterNonUnique</a> <a class="sublink-1" href="#flatten">flatten</a> <a class="sublink-1" href="#flattendepth">flattenDepth</a> <a class="sublink-1" href="#groupby">groupBy</a> <a class="sublink-1" href="#head">head</a> <a class="sublink-1" href="#initial">initial</a> <a class="sublink-1" href="#initialize2darray">initialize2DArray</a> <a class="sublink-1" href="#initializearraywithrange">initializeArrayWithRange</a> <a class="sublink-1" href="#initializearraywithvalues">initializeArrayWithValues</a> <a class="sublink-1" href="#intersection">intersection</a> <a class="sublink-1" href="#issorted">isSorted</a> <a class="sublink-1" href="#join">join</a> <a class="sublink-1" href="#last">last</a> <a class="sublink-1" href="#mapobject">mapObject</a> <a class="sublink-1" href="#maxn">maxN</a> <a class="sublink-1" href="#minn">minN</a> <a class="sublink-1" href="#nthelement">nthElement</a> <a class="sublink-1" href="#pick">pick</a> <a class="sublink-1" href="#pull">pull</a> <a class="sublink-1" href="#pullatindex">pullAtIndex</a> <a class="sublink-1" href="#pullatvalue">pullAtValue</a> <a class="sublink-1" href="#quicksort">quickSort</a> <a class="sublink-1" href="#reducedfilter">reducedFilter</a> <a class="sublink-1" href="#remove">remove</a> <a class="sublink-1" href="#sample">sample</a> <a class="sublink-1" href="#samplesize">sampleSize</a> <a class="sublink-1" href="#shuffle">shuffle</a> <a class="sublink-1" href="#similarity">similarity</a> <a class="sublink-1" href="#sortedindex">sortedIndex</a> <a class="sublink-1" href="#symmetricdifference">symmetricDifference</a> <a class="sublink-1" href="#tail">tail</a> <a class="sublink-1" href="#take">take</a> <a class="sublink-1" href="#takeright">takeRight</a> <a class="sublink-1" href="#union">union</a> <a class="sublink-1" href="#without">without</a> <a class="sublink-1" href="#zip">zip</a> <a class="sublink-1" href="#zipobject">zipObject</a><h3>Browser</h3><a class="sublink-1" href="#arraytohtmllist">arrayToHtmlList</a> <a class="sublink-1" href="#bottomvisible">bottomVisible</a> <a class="sublink-1" href="#copytoclipboard">copyToClipboard</a> <a class="sublink-1" href="#currenturl">currentURL</a> <a class="sublink-1" href="#detectdevicetype">detectDeviceType</a> <a class="sublink-1" href="#elementisvisibleinviewport">elementIsVisibleInViewport</a> <a class="sublink-1" href="#getscrollposition">getScrollPosition</a> <a class="sublink-1" href="#getstyle">getStyle</a> <a class="sublink-1" href="#hasclass">hasClass</a> <a class="sublink-1" href="#hide">hide</a> <a class="sublink-1" href="#httpsredirect">httpsRedirect</a> <a class="sublink-1" href="#onuserinputchange">onUserInputChange</a> <a class="sublink-1" href="#redirect">redirect</a> <a class="sublink-1" href="#runasync">runAsync</a> <a class="sublink-1" href="#scrolltotop">scrollToTop</a> <a class="sublink-1" href="#setstyle">setStyle</a> <a class="sublink-1" href="#show">show</a> <a class="sublink-1" href="#speechsynthesis">speechSynthesis</a> <a class="sublink-1" href="#toggleclass">toggleClass</a> <a class="sublink-1" href="#uuidgeneratorbrowser">UUIDGeneratorBrowser</a><h3>Date</h3><a class="sublink-1" href="#formatduration">formatDuration</a> <a class="sublink-1" href="#getdaysdiffbetweendates">getDaysDiffBetweenDates</a> <a class="sublink-1" href="#jsontodate">JSONToDate</a> <a class="sublink-1" href="#toenglishdate">toEnglishDate</a> <a class="sublink-1" href="#tomorrow">tomorrow</a><h3>Function</h3><a class="sublink-1" href="#chainasync">chainAsync</a> <a class="sublink-1" href="#compose">compose</a> <a class="sublink-1" href="#curry">curry</a> <a class="sublink-1" href="#defer">defer</a> <a class="sublink-1" href="#functionname">functionName</a> <a class="sublink-1" href="#memoize">memoize</a> <a class="sublink-1" href="#once">once</a> <a class="sublink-1" href="#runpromisesinseries">runPromisesInSeries</a> <a class="sublink-1" href="#sleep">sleep</a><h3>Logic</h3><a class="sublink-1" href="#negate">negate</a><h3>Math</h3><a class="sublink-1" href="#average">average</a> <a class="sublink-1" href="#clampnumber">clampNumber</a> <a class="sublink-1" href="#collatz">collatz</a> <a class="sublink-1" href="#digitize">digitize</a> <a class="sublink-1" href="#distance">distance</a> <a class="sublink-1" href="#elo">elo</a> <a class="sublink-1" href="#factorial">factorial</a> <a class="sublink-1" href="#factors">factors</a> <a class="sublink-1" href="#fibonacci">fibonacci</a> <a class="sublink-1" href="#fibonaccicountuntilnum">fibonacciCountUntilNum</a> <a class="sublink-1" href="#fibonacciuntilnum">fibonacciUntilNum</a> <a class="sublink-1" href="#gcd">gcd</a> <a class="sublink-1" href="#geometricprogression">geometricProgression</a> <a class="sublink-1" href="#hammingdistance">hammingDistance</a> <a class="sublink-1" href="#howmanytimes">howManyTimes</a> <a class="sublink-1" href="#inrange">inRange</a> <a class="sublink-1" href="#isarmstrongnumber">isArmstrongNumber</a> <a class="sublink-1" href="#isdivisible">isDivisible</a> <a class="sublink-1" href="#iseven">isEven</a> <a class="sublink-1" href="#isprime">isPrime</a> <a class="sublink-1" href="#lcm">lcm</a> <a class="sublink-1" href="#luhncheck">luhnCheck</a> <a class="sublink-1" href="#median">median</a> <a class="sublink-1" href="#percentile">percentile</a> <a class="sublink-1" href="#powerset">powerset</a> <a class="sublink-1" href="#primes">primes</a> <a class="sublink-1" href="#randomintegerinrange">randomIntegerInRange</a> <a class="sublink-1" href="#randomnumberinrange">randomNumberInRange</a> <a class="sublink-1" href="#round">round</a> <a class="sublink-1" href="#solverpn">solveRPN</a> <a class="sublink-1" href="#standarddeviation">standardDeviation</a> <a class="sublink-1" href="#sum">sum</a> <a class="sublink-1" href="#sumpower">sumPower</a><h3>Node</h3><a class="sublink-1" href="#hasflags">hasFlags</a> <a class="sublink-1" href="#istravisci">isTravisCI</a> <a class="sublink-1" href="#jsontofile">JSONToFile</a> <a class="sublink-1" href="#readfilelines">readFileLines</a> <a class="sublink-1" href="#untildify">untildify</a> <a class="sublink-1" href="#uuidgeneratornode">UUIDGeneratorNode</a><h3>Object</h3><a class="sublink-1" href="#cleanobj">cleanObj</a> <a class="sublink-1" href="#invertkeyvalues">invertKeyValues</a> <a class="sublink-1" href="#lowercasekeys">lowercaseKeys</a> <a class="sublink-1" href="#objectfrompairs">objectFromPairs</a> <a class="sublink-1" href="#objecttopairs">objectToPairs</a> <a class="sublink-1" href="#orderby">orderBy</a> <a class="sublink-1" href="#select">select</a> <a class="sublink-1" href="#shallowclone">shallowClone</a> <a class="sublink-1" href="#size">size</a> <a class="sublink-1" href="#truthcheckcollection">truthCheckCollection</a><h3>String</h3><a class="sublink-1" href="#anagrams">anagrams</a> <a class="sublink-1" href="#bytesize">byteSize</a> <a class="sublink-1" href="#capitalize">capitalize</a> <a class="sublink-1" href="#capitalizeeveryword">capitalizeEveryWord</a> <a class="sublink-1" href="#countvowels">countVowels</a> <a class="sublink-1" href="#escapehtml">escapeHTML</a> <a class="sublink-1" href="#escaperegexp">escapeRegExp</a> <a class="sublink-1" href="#fromcamelcase">fromCamelCase</a> <a class="sublink-1" href="#isabsoluteurl">isAbsoluteURL</a> <a class="sublink-1" href="#mask">mask</a> <a class="sublink-1" href="#palindrome">palindrome</a> <a class="sublink-1" href="#pluralize">pluralize</a> <a class="sublink-1" href="#repeatstring">repeatString</a> <a class="sublink-1" href="#reversestring">reverseString</a> <a class="sublink-1" href="#sortcharactersinstring">sortCharactersInString</a> <a class="sublink-1" href="#splitlines">splitLines</a> <a class="sublink-1" href="#tocamelcase">toCamelCase</a> <a class="sublink-1" href="#tokebabcase">toKebabCase</a> <a class="sublink-1" href="#tosnakecase">toSnakeCase</a> <a class="sublink-1" href="#truncatestring">truncateString</a> <a class="sublink-1" href="#unescapehtml">unescapeHTML</a> <a class="sublink-1" href="#words">words</a><h3>Utility</h3><a class="sublink-1" href="#cloneregexp">cloneRegExp</a> <a class="sublink-1" href="#coalesce">coalesce</a> <a class="sublink-1" href="#coalescefactory">coalesceFactory</a> <a class="sublink-1" href="#extendhex">extendHex</a> <a class="sublink-1" href="#gettype">getType</a> <a class="sublink-1" href="#geturlparameters">getURLParameters</a> <a class="sublink-1" href="#hextorgb">hexToRGB</a> <a class="sublink-1" href="#isarray">isArray</a> <a class="sublink-1" href="#isarraylike">isArrayLike</a> <a class="sublink-1" href="#isboolean">isBoolean</a> <a class="sublink-1" href="#isfunction">isFunction</a> <a class="sublink-1" href="#isnull">isNull</a> <a class="sublink-1" href="#isnumber">isNumber</a> <a class="sublink-1" href="#isprimitive">isPrimitive</a> <a class="sublink-1" href="#ispromiselike">isPromiseLike</a> <a class="sublink-1" href="#isstring">isString</a> <a class="sublink-1" href="#issymbol">isSymbol</a> <a class="sublink-1" href="#isvalidjson">isValidJSON</a> <a class="sublink-1" href="#prettybytes">prettyBytes</a> <a class="sublink-1" href="#randomhexcolorcode">randomHexColorCode</a> <a class="sublink-1" href="#rgbtohex">RGBToHex</a> <a class="sublink-1" href="#sdbm">sdbm</a> <a class="sublink-1" href="#timetaken">timeTaken</a> <a class="sublink-1" href="#todecimalmark">toDecimalMark</a> <a class="sublink-1" href="#toordinalsuffix">toOrdinalSuffix</a> <a class="sublink-1" href="#validatenumber">validateNumber</a> <a class="sublink-1" href="#yesno">yesNo</a></nav><main class="col-sm-12 col-md-8 col-lg-9" style="height:100%;overflow-y:auto;background:#eceef2;padding:0"><a id="top">&nbsp;</a><h2 style="text-align:center">Adapter</h2><div class="card fluid"><h3 id="call" class="section double-padded">call</h3><div class="section double-padded"><p>Given a key and a set of arguments, call them when given a context. Primarily useful in composition.</p><p>Use a closure to call a stored key with stored arguments.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">call</span> <span class="token operator">=</span> <span class="token punctuation">(</span>key<span class="token punctuation">,</span> <span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=></span> context <span class="token operator">=></span> context<span class="token punctuation">[</span>key<span class="token punctuation">](</span><span class="token operator">...</span>args<span class="token punctuation">);</span>
+      }</script></head><body onload="loader()"><a href="https://github.com/Chalarangelo/30-seconds-of-code" class="github-corner" aria-label="View source on Github"><svg width="90" height="90" viewBox="0 0 250 250" style="fill:#151513;color:#fff;position:absolute;top:0;border:0;right:0" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin:130px 106px" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style><header style="height:5.5rem"><h1 class="logo"><img src="favicon.png" style="height:4rem" alt="logo"/><span id="title">&nbsp;30 seconds of code</span> <small>Curated collection of useful JavaScript snippets that you can understand in 30 seconds or less.</small></h1><label for="doc-drawer-checkbox" class="button drawer-toggle" id="menu-toggle"></label></header><div class="row" style="height:calc(100vh - 5.875rem);overflow:hidden"><input id="doc-drawer-checkbox" class="drawer" value="on" type="checkbox"><nav class="col-md-4 col-lg-3" style="border-top:0"><div class="group"><input class="search" type="text" id="searchInput" onkeyup="search(this)"><label id="search-label">Search for snippet...</label></div><label for="doc-drawer-checkbox" class="button drawer-close"></label><h3>Adapter</h3><a class="sublink-1" tags="adapter,function" href="#call">call</a> <a class="sublink-1" tags="adapter,function,array" href="#collectinto">collectInto</a> <a class="sublink-1" tags="adapter,function" href="#flip">flip</a> <a class="sublink-1" tags="adapter,function" href="#pipefunctions">pipeFunctions</a> <a class="sublink-1" tags="adapter,function,promise" href="#promisify">promisify</a> <a class="sublink-1" tags="adapter" href="#spreadover">spreadOver</a><h3>Array</h3><a class="sublink-1" tags="array" href="#chunk">chunk</a> <a class="sublink-1" tags="array" href="#compact">compact</a> <a class="sublink-1" tags="array" href="#countoccurrences">countOccurrences</a> <a class="sublink-1" tags="array,recursion" href="#deepflatten">deepFlatten</a> <a class="sublink-1" tags="array,math" href="#difference">difference</a> <a class="sublink-1" tags="array,function" href="#differencewith">differenceWith</a> <a class="sublink-1" tags="array" href="#distinctvaluesofarray">distinctValuesOfArray</a> <a class="sublink-1" tags="array,function" href="#dropelements">dropElements</a> <a class="sublink-1" tags="array" href="#dropright">dropRight</a> <a class="sublink-1" tags="array" href="#everynth">everyNth</a> <a class="sublink-1" tags="array" href="#filternonunique">filterNonUnique</a> <a class="sublink-1" tags="array" href="#flatten">flatten</a> <a class="sublink-1" tags="array,recursion" href="#flattendepth">flattenDepth</a> <a class="sublink-1" tags="array" href="#groupby">groupBy</a> <a class="sublink-1" tags="array" href="#head">head</a> <a class="sublink-1" tags="array" href="#initial">initial</a> <a class="sublink-1" tags="array" href="#initialize2darray">initialize2DArray</a> <a class="sublink-1" tags="array,math" href="#initializearraywithrange">initializeArrayWithRange</a> <a class="sublink-1" tags="array,amth" href="#initializearraywithvalues">initializeArrayWithValues</a> <a class="sublink-1" tags="array,math" href="#intersection">intersection</a> <a class="sublink-1" tags="array" href="#issorted">isSorted</a> <a class="sublink-1" tags="array" href="#join">join</a> <a class="sublink-1" tags="array" href="#last">last</a> <a class="sublink-1" tags="array,object" href="#mapobject">mapObject</a> <a class="sublink-1" tags="array,math" href="#maxn">maxN</a> <a class="sublink-1" tags="array,amth" href="#minn">minN</a> <a class="sublink-1" tags="array" href="#nthelement">nthElement</a> <a class="sublink-1" tags="array" href="#pick">pick</a> <a class="sublink-1" tags="array" href="#pull">pull</a> <a class="sublink-1" tags="array" href="#pullatindex">pullAtIndex</a> <a class="sublink-1" tags="array" href="#pullatvalue">pullAtValue</a> <a class="sublink-1" tags="array" href="#reducedfilter">reducedFilter</a> <a class="sublink-1" tags="array" href="#remove">remove</a> <a class="sublink-1" tags="array,random" href="#sample">sample</a> <a class="sublink-1" tags="array,random" href="#samplesize">sampleSize</a> <a class="sublink-1" tags="array,random" href="#shuffle">shuffle</a> <a class="sublink-1" tags="array,math" href="#similarity">similarity</a> <a class="sublink-1" tags="array,math" href="#sortedindex">sortedIndex</a> <a class="sublink-1" tags="array,math" href="#symmetricdifference">symmetricDifference</a> <a class="sublink-1" tags="array" href="#tail">tail</a> <a class="sublink-1" tags="array" href="#take">take</a> <a class="sublink-1" tags="array" href="#takeright">takeRight</a> <a class="sublink-1" tags="array,math" href="#union">union</a> <a class="sublink-1" tags="array" href="#without">without</a> <a class="sublink-1" tags="array" href="#zip">zip</a> <a class="sublink-1" tags="array,object" href="#zipobject">zipObject</a><h3>Browser</h3><a class="sublink-1" tags="browser,array" href="#arraytohtmllist">arrayToHtmlList</a> <a class="sublink-1" tags="browser" href="#bottomvisible">bottomVisible</a> <a class="sublink-1" tags="browser,string,advanced" href="#copytoclipboard">copyToClipboard</a> <a class="sublink-1" tags="browser,url" href="#currenturl">currentURL</a> <a class="sublink-1" tags="browser" href="#detectdevicetype">detectDeviceType</a> <a class="sublink-1" tags="browser" href="#elementisvisibleinviewport">elementIsVisibleInViewport</a> <a class="sublink-1" tags="browser" href="#getscrollposition">getScrollPosition</a> <a class="sublink-1" tags="browser,css" href="#getstyle">getStyle</a> <a class="sublink-1" tags="browser,css" href="#hasclass">hasClass</a> <a class="sublink-1" tags="browser,css" href="#hide">hide</a> <a class="sublink-1" tags="browser,url" href="#httpsredirect">httpsRedirect</a> <a class="sublink-1" tags="browser,advanced" href="#onuserinputchange">onUserInputChange</a> <a class="sublink-1" tags="browser,url" href="#redirect">redirect</a> <a class="sublink-1" tags="browser,function,advanced,promise,url" href="#runasync">runAsync</a> <a class="sublink-1" tags="browser" href="#scrolltotop">scrollToTop</a> <a class="sublink-1" tags="browser" href="#setstyle">setStyle</a> <a class="sublink-1" tags="browser,css" href="#show">show</a> <a class="sublink-1" tags="browser" href="#toggleclass">toggleClass</a> <a class="sublink-1" tags="browser,utility,random" href="#uuidgeneratorbrowser">UUIDGeneratorBrowser</a><h3>Date</h3><a class="sublink-1" tags="date,math,string,utility" href="#formatduration">formatDuration</a> <a class="sublink-1" tags="date" href="#getdaysdiffbetweendates">getDaysDiffBetweenDates</a> <a class="sublink-1" tags="date,string" href="#toenglishdate">toEnglishDate</a> <a class="sublink-1" tags="date" href="#tomorrow">tomorrow</a><h3>Function</h3><a class="sublink-1" tags="function" href="#chainasync">chainAsync</a> <a class="sublink-1" tags="function" href="#compose">compose</a> <a class="sublink-1" tags="function,recursion" href="#curry">curry</a> <a class="sublink-1" tags="function" href="#defer">defer</a> <a class="sublink-1" tags="function,utility" href="#functionname">functionName</a> <a class="sublink-1" tags="function" href="#memoize">memoize</a> <a class="sublink-1" tags="function" href="#once">once</a> <a class="sublink-1" tags="function,promise" href="#runpromisesinseries">runPromisesInSeries</a> <a class="sublink-1" tags="function,promise" href="#sleep">sleep</a><h3>Logic</h3><a class="sublink-1" tags="logic,function" href="#negate">negate</a><h3>Math</h3><a class="sublink-1" tags="math,array" href="#average">average</a> <a class="sublink-1" tags="math" href="#clampnumber">clampNumber</a> <a class="sublink-1" tags="math,array" href="#digitize">digitize</a> <a class="sublink-1" tags="math" href="#distance">distance</a> <a class="sublink-1" tags="math,array,advanced" href="#elo">elo</a> <a class="sublink-1" tags="math,recursion" href="#factorial">factorial</a> <a class="sublink-1" tags="math,array" href="#fibonacci">fibonacci</a> <a class="sublink-1" tags="math,recursion" href="#gcd">gcd</a> <a class="sublink-1" tags="math" href="#geometricprogression">geometricProgression</a> <a class="sublink-1" tags="math" href="#hammingdistance">hammingDistance</a> <a class="sublink-1" tags="math" href="#inrange">inRange</a> <a class="sublink-1" tags="math" href="#isdivisible">isDivisible</a> <a class="sublink-1" tags="math" href="#iseven">isEven</a> <a class="sublink-1" tags="math" href="#isprime">isPrime</a> <a class="sublink-1" tags="math,recursion" href="#lcm">lcm</a> <a class="sublink-1" tags="math,utility" href="#luhncheck">luhnCheck</a> <a class="sublink-1" tags="math,array" href="#median">median</a> <a class="sublink-1" tags="math" href="#percentile">percentile</a> <a class="sublink-1" tags="math" href="#powerset">powerset</a> <a class="sublink-1" tags="math,array" href="#primes">primes</a> <a class="sublink-1" tags="math,utility,random" href="#randomintegerinrange">randomIntegerInRange</a> <a class="sublink-1" tags="math,utility,random" href="#randomnumberinrange">randomNumberInRange</a> <a class="sublink-1" tags="math" href="#round">round</a> <a class="sublink-1" tags="math,utility" href="#sdbm">sdbm</a> <a class="sublink-1" tags="math,array" href="#standarddeviation">standardDeviation</a> <a class="sublink-1" tags="math,array" href="#sum">sum</a> <a class="sublink-1" tags="math" href="#sumpower">sumPower</a><h3>Node</h3><a class="sublink-1" tags="node" href="#hasflags">hasFlags</a> <a class="sublink-1" tags="node" href="#istravisci">isTravisCI</a> <a class="sublink-1" tags="node,json" href="#jsontofile">JSONToFile</a> <a class="sublink-1" tags="node,array,string" href="#readfilelines">readFileLines</a> <a class="sublink-1" tags="node,string" href="#untildify">untildify</a> <a class="sublink-1" tags="node,utility,random" href="#uuidgeneratornode">UUIDGeneratorNode</a><h3>Object</h3><a class="sublink-1" tags="object,json" href="#cleanobj">cleanObj</a> <a class="sublink-1" tags="object" href="#invertkeyvalues">invertKeyValues</a> <a class="sublink-1" tags="object" href="#lowercasekeys">lowercaseKeys</a> <a class="sublink-1" tags="object,array" href="#objectfrompairs">objectFromPairs</a> <a class="sublink-1" tags="object,array" href="#objecttopairs">objectToPairs</a> <a class="sublink-1" tags="object,array" href="#orderby">orderBy</a> <a class="sublink-1" tags="object" href="#select">select</a> <a class="sublink-1" tags="object" href="#shallowclone">shallowClone</a> <a class="sublink-1" tags="object,array,string" href="#size">size</a> <a class="sublink-1" tags="object,logic,array" href="#truthcheckcollection">truthCheckCollection</a><h3>String</h3><a class="sublink-1" tags="string,recursion" href="#anagrams">anagrams</a> <a class="sublink-1" tags="string" href="#bytesize">byteSize</a> <a class="sublink-1" tags="string,array" href="#capitalize">capitalize</a> <a class="sublink-1" tags="string,regexp" href="#capitalizeeveryword">capitalizeEveryWord</a> <a class="sublink-1" tags="string" href="#countvowels">countVowels</a> <a class="sublink-1" tags="string,browser,regexp" href="#escapehtml">escapeHTML</a> <a class="sublink-1" tags="string,regexp" href="#escaperegexp">escapeRegExp</a> <a class="sublink-1" tags="string" href="#fromcamelcase">fromCamelCase</a> <a class="sublink-1" tags="string,utility,browser,url" href="#isabsoluteurl">isAbsoluteURL</a> <a class="sublink-1" tags="string,utility,regexp" href="#mask">mask</a> <a class="sublink-1" tags="string" href="#palindrome">palindrome</a> <a class="sublink-1" tags="string" href="#pluralize">pluralize</a> <a class="sublink-1" tags="string,array" href="#reversestring">reverseString</a> <a class="sublink-1" tags="string" href="#sortcharactersinstring">sortCharactersInString</a> <a class="sublink-1" tags="string" href="#splitlines">splitLines</a> <a class="sublink-1" tags="string,regexp" href="#tocamelcase">toCamelCase</a> <a class="sublink-1" tags="string,regexp" href="#tokebabcase">toKebabCase</a> <a class="sublink-1" tags="string,regexp" href="#tosnakecase">toSnakeCase</a> <a class="sublink-1" tags="string" href="#truncatestring">truncateString</a> <a class="sublink-1" tags="string,browser" href="#unescapehtml">unescapeHTML</a> <a class="sublink-1" tags="string,regexp" href="#words">words</a><h3>Type</h3><a class="sublink-1" tags="type" href="#gettype">getType</a> <a class="sublink-1" tags="type,array" href="#isarray">isArray</a> <a class="sublink-1" tags="type,array" href="#isarraylike">isArrayLike</a> <a class="sublink-1" tags="type" href="#isboolean">isBoolean</a> <a class="sublink-1" tags="type,function" href="#isfunction">isFunction</a> <a class="sublink-1" tags="type" href="#isnull">isNull</a> <a class="sublink-1" tags="type,math" href="#isnumber">isNumber</a> <a class="sublink-1" tags="type,function,array,string" href="#isprimitive">isPrimitive</a> <a class="sublink-1" tags="type,function,promise" href="#ispromiselike">isPromiseLike</a> <a class="sublink-1" tags="type,string" href="#isstring">isString</a> <a class="sublink-1" tags="type" href="#issymbol">isSymbol</a> <a class="sublink-1" tags="type,json" href="#isvalidjson">isValidJSON</a><h3>Utility</h3><a class="sublink-1" tags="utility,regexp" href="#cloneregexp">cloneRegExp</a> <a class="sublink-1" tags="utility" href="#coalesce">coalesce</a> <a class="sublink-1" tags="utility" href="#coalescefactory">coalesceFactory</a> <a class="sublink-1" tags="utility,string" href="#extendhex">extendHex</a> <a class="sublink-1" tags="utility,browser,string,url" href="#geturlparameters">getURLParameters</a> <a class="sublink-1" tags="utility,string,math,advanced" href="#hextorgb">hexToRGB</a> <a class="sublink-1" tags="utility,string,math" href="#prettybytes">prettyBytes</a> <a class="sublink-1" tags="utility,random" href="#randomhexcolorcode">randomHexColorCode</a> <a class="sublink-1" tags="utility" href="#rgbtohex">RGBToHex</a> <a class="sublink-1" tags="utility" href="#timetaken">timeTaken</a> <a class="sublink-1" tags="utility,math" href="#todecimalmark">toDecimalMark</a> <a class="sublink-1" tags="utility,math" href="#toordinalsuffix">toOrdinalSuffix</a> <a class="sublink-1" tags="utility,math" href="#validatenumber">validateNumber</a> <a class="sublink-1" tags="utility,regexp" href="#yesno">yesNo</a></nav><main class="col-sm-12 col-md-8 col-lg-9" style="height:100%;overflow-y:auto;background:#eceef2;padding:0"><a id="top">&nbsp;</a><h2 style="text-align:center">Adapter</h2><div class="card fluid"><h3 id="call" class="section double-padded">call</h3><div class="section double-padded"><p>Given a key and a set of arguments, call them when given a context. Primarily useful in composition.</p><p>Use a closure to call a stored key with stored arguments.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">call</span> <span class="token operator">=</span> <span class="token punctuation">(</span>key<span class="token punctuation">,</span> <span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=></span> context <span class="token operator">=></span> context<span class="token punctuation">[</span>key<span class="token punctuation">](</span><span class="token operator">...</span>args<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js">Promise<span class="token punctuation">.</span><span class="token function">resolve</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">])
   .</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token function">call</span><span class="token punctuation">(</span><span class="token string">'map'</span><span class="token punctuation">,</span> x <span class="token operator">=></span> <span class="token number">2</span> <span class="token operator">*</span> x<span class="token punctuation">))
   .</span><span class="token function">then</span><span class="token punctuation">(</span>console<span class="token punctuation">.</span>log<span class="token punctuation">);</span> <span class="token comment">//[ 2, 4, 6 ]</span>
@@ -50,7 +54,7 @@ Promise<span class="token punctuation">.</span><span class="token function">reso
 <span class="token keyword">let</span> p2 <span class="token operator">=</span> Promise<span class="token punctuation">.</span><span class="token function">resolve</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">);</span>
 <span class="token keyword">let</span> p3 <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Promise</span><span class="token punctuation">(</span>resolve <span class="token operator">=></span> <span class="token function">setTimeout</span><span class="token punctuation">(</span>resolve<span class="token punctuation">,</span> <span class="token number">2000</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">));</span>
 <span class="token function">Pall</span><span class="token punctuation">(</span>p1<span class="token punctuation">,</span> p2<span class="token punctuation">,</span> p3<span class="token punctuation">).</span><span class="token function">then</span><span class="token punctuation">(</span>console<span class="token punctuation">.</span>log<span class="token punctuation">);</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="flip" class="section double-padded">flip</h3><div class="section double-padded"><p>Flip takes a function as an argument, then makes the first argument the last</p><p>Return a closure that takes variadic inputs, and splices the last argument to make it the first argument before applying the rest.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">flip</span> <span class="token operator">=</span> fn <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token function">fn</span><span class="token punctuation">(</span>args<span class="token punctuation">.</span><span class="token function">pop</span><span class="token punctuation">(),</span> <span class="token operator">...</span>args<span class="token punctuation">);</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="flip" class="section double-padded">flip</h3><div class="section double-padded"><p>Flip takes a function as an argument, then makes the first argument the last.</p><p>Return a closure that takes variadic inputs, and splices the last argument to make it the first argument before applying the rest.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">flip</span> <span class="token operator">=</span> fn <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token function">fn</span><span class="token punctuation">(</span>args<span class="token punctuation">.</span><span class="token function">pop</span><span class="token punctuation">(),</span> <span class="token operator">...</span>args<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token keyword">let</span> a <span class="token operator">=</span> <span class="token punctuation">{</span> name<span class="token punctuation">:</span> <span class="token string">'John Smith'</span> <span class="token punctuation">};</span>
 <span class="token keyword">let</span> b <span class="token operator">=</span> <span class="token punctuation">{};</span>
 <span class="token keyword">const</span> mergeFrom <span class="token operator">=</span> <span class="token function">flip</span><span class="token punctuation">(</span>Object<span class="token punctuation">.</span>assign<span class="token punctuation">);</span>
@@ -79,7 +83,7 @@ Object<span class="token punctuation">.</span><span class="token function">assig
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">chunk</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">],</span> <span class="token number">2</span><span class="token punctuation">);</span> <span class="token comment">// [[1,2],[3,4],[5]]</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="compact" class="section double-padded">compact</h3><div class="section double-padded"><p>Removes falsey values from an array.</p><p>Use <code>Array.filter()</code> to filter out falsey values (<code>false</code>, <code>null</code>, <code>0</code>, <code>&quot;&quot;</code>, <code>undefined</code>, and <code>NaN</code>).</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">compact</span> <span class="token operator">=</span> arr <span class="token operator">=></span> arr<span class="token punctuation">.</span><span class="token function">filter</span><span class="token punctuation">(</span>Boolean<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">compact</span><span class="token punctuation">([</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token boolean">false</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token string">''</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token string">'a'</span><span class="token punctuation">,</span> <span class="token string">'e'</span> <span class="token operator">*</span> <span class="token number">23</span><span class="token punctuation">,</span> <span class="token number">NaN</span><span class="token punctuation">,</span> <span class="token string">'s'</span><span class="token punctuation">,</span> <span class="token number">34</span><span class="token punctuation">]);</span> <span class="token comment">// [ 1, 2, 3, 'a', 's', 34 ]</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="countoccurrences" class="section double-padded">countOccurrences</h3><div class="section double-padded"><p>Counts the occurrences of a value in an array.</p><p>Use <code>Array.reduce()</code> to increment a counter each time you encounter the specific value inside the array.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">countOccurrences</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> value<span class="token punctuation">)</span> <span class="token operator">=></span> arr<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> v<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">(</span>v <span class="token operator">===</span> value <span class="token operator">?</span> a <span class="token operator">+</span> <span class="token number">1</span> <span class="token punctuation">:</span> a <span class="token operator">+</span> <span class="token number">0</span><span class="token punctuation">),</span> <span class="token number">0</span><span class="token punctuation">);</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="countoccurrences" class="section double-padded">countOccurrences</h3><div class="section double-padded"><p>Counts the occurrences of a value in an array.</p><p>Use <code>Array.reduce()</code> to increment a counter each time you encounter the specific value inside the array.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">countOccurrences</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> val<span class="token punctuation">)</span> <span class="token operator">=></span> arr<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> v<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">(</span>v <span class="token operator">===</span> val <span class="token operator">?</span> a <span class="token operator">+</span> <span class="token number">1</span> <span class="token punctuation">:</span> a <span class="token operator">+</span> <span class="token number">0</span><span class="token punctuation">),</span> <span class="token number">0</span><span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">countOccurrences</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">],</span> <span class="token number">1</span><span class="token punctuation">);</span> <span class="token comment">// 3</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="deepflatten" class="section double-padded">deepFlatten</h3><div class="section double-padded"><p>Deep flattens an array.</p><p>Use recursion. Use <code>Array.concat()</code> with an empty array (<code>[]</code>) and the spread operator (<code>...</code>) to flatten an array. Recursively flatten each element that is an array.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">deepFlatten</span> <span class="token operator">=</span> arr <span class="token operator">=></span> <span class="token punctuation">[].</span><span class="token function">concat</span><span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>v <span class="token operator">=></span> <span class="token punctuation">(</span>Array<span class="token punctuation">.</span><span class="token function">isArray</span><span class="token punctuation">(</span>v<span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token function">deepFlatten</span><span class="token punctuation">(</span>v<span class="token punctuation">) :</span> v<span class="token punctuation">)));</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">deepFlatten</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">, [</span><span class="token number">2</span><span class="token punctuation">], [[</span><span class="token number">3</span><span class="token punctuation">],</span> <span class="token number">4</span><span class="token punctuation">],</span> <span class="token number">5</span><span class="token punctuation">]);</span> <span class="token comment">// [1,2,3,4,5]</span>
@@ -105,7 +109,7 @@ Object<span class="token punctuation">.</span><span class="token function">assig
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">everyNth</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">],</span> <span class="token number">2</span><span class="token punctuation">);</span> <span class="token comment">// [ 2, 4, 6 ]</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="filternonunique" class="section double-padded">filterNonUnique</h3><div class="section double-padded"><p>Filters out the non-unique values in an array.</p><p>Use <code>Array.filter()</code> for an array containing only the unique values.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">filterNonUnique</span> <span class="token operator">=</span> arr <span class="token operator">=></span> arr<span class="token punctuation">.</span><span class="token function">filter</span><span class="token punctuation">(</span>i <span class="token operator">=></span> arr<span class="token punctuation">.</span><span class="token function">indexOf</span><span class="token punctuation">(</span>i<span class="token punctuation">)</span> <span class="token operator">===</span> arr<span class="token punctuation">.</span><span class="token function">lastIndexOf</span><span class="token punctuation">(</span>i<span class="token punctuation">));</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">filterNonUnique</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">]);</span> <span class="token comment">// [1,3,5]</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="flatten" class="section double-padded">flatten</h3><div class="section double-padded"><p>Flattens an array.</p><p>Use a new array and concatenate it with the spread input array causing a shallow denesting of any contained arrays.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">flatten</span> <span class="token operator">=</span> arr <span class="token operator">=></span> <span class="token punctuation">[].</span><span class="token function">concat</span><span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">);</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="flatten" class="section double-padded">flatten</h3><div class="section double-padded"><p>Flattens an array.</p><p>Use a new array, <code>Array.concat()</code> and the spread operator (<code>...</code>) to cause a shallow denesting of any contained arrays.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">flatten</span> <span class="token operator">=</span> arr <span class="token operator">=></span> <span class="token punctuation">[].</span><span class="token function">concat</span><span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">flatten</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">, [</span><span class="token number">2</span><span class="token punctuation">],</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">]);</span> <span class="token comment">// [1,2,3,4]</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="flattendepth" class="section double-padded">flattenDepth</h3><div class="section double-padded"><p>Flattens an array up to the specified depth.</p><p>Use recursion, decrementing <code>depth</code> by 1 for each level of depth. Use <code>Array.reduce()</code> and <code>Array.concat()</code> to merge elements or arrays. Base case, for <code>depth</code> equal to <code>1</code> stops recursion. Omit the second element, <code>depth</code> to flatten only to a depth of <code>1</code> (single flatten).</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">flattenDepth</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> depth <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">=></span>
   depth <span class="token operator">!=</span> <span class="token number">1</span>
@@ -128,12 +132,12 @@ Object<span class="token punctuation">.</span><span class="token function">assig
     .</span><span class="token function">fill</span><span class="token punctuation">()
     .</span><span class="token function">map</span><span class="token punctuation">(()</span> <span class="token operator">=></span> <span class="token function">Array</span><span class="token punctuation">(</span>w<span class="token punctuation">).</span><span class="token function">fill</span><span class="token punctuation">(</span>val<span class="token punctuation">));</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">initialize2DArray</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">);</span> <span class="token comment">// [[0,0], [0,0]]</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="initializearraywithrange" class="section double-padded">initializeArrayWithRange</h3><div class="section double-padded"><p>Initializes an array containing the numbers in the specified range where <code>start</code> and <code>end</code> are inclusive with there common difference <code>step</code>.</p><p>Use <code>Array(Math.ceil((end+1-start)/step)</code> to create an array of the desired length(the amounts of elements is equal to <code>(end-start)/step</code> or <code>(end+1-start)/step</code> for inclusive end), <code>Array.map()</code> to fill with the desired values in a range. You can omit <code>start</code> to use a default value of <code>0</code>. You can omit <code>step</code> to use a default value of <code>1</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">initializeArrayWithRange</span> <span class="token operator">=</span> <span class="token punctuation">(</span>end<span class="token punctuation">,</span> start <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">,</span> step <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">=></span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="initializearraywithrange" class="section double-padded">initializeArrayWithRange</h3><div class="section double-padded"><p>Initializes an array containing the numbers in the specified range where <code>start</code> and <code>end</code> are inclusive with there common difference <code>step</code>.</p><p>Use <code>Array.from(Math.ceil((end+1-start)/step))</code> to create an array of the desired length(the amounts of elements is equal to <code>(end-start)/step</code> or <code>(end+1-start)/step</code> for inclusive end), <code>Array.map()</code> to fill with the desired values in a range. You can omit <code>start</code> to use a default value of <code>0</code>. You can omit <code>step</code> to use a default value of <code>1</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">initializeArrayWithRange</span> <span class="token operator">=</span> <span class="token punctuation">(</span>end<span class="token punctuation">,</span> start <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">,</span> step <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">=></span>
   Array<span class="token punctuation">.</span><span class="token keyword">from</span><span class="token punctuation">({</span> length<span class="token punctuation">:</span> Math<span class="token punctuation">.</span><span class="token function">ceil</span><span class="token punctuation">((</span>end <span class="token operator">+</span> <span class="token number">1</span> <span class="token operator">-</span> start<span class="token punctuation">)</span> <span class="token operator">/</span> step<span class="token punctuation">) }).</span><span class="token function">map</span><span class="token punctuation">((</span>v<span class="token punctuation">,</span> i<span class="token punctuation">)</span> <span class="token operator">=></span> i <span class="token operator">*</span> step <span class="token operator">+</span> start<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">initializeArrayWithRange</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">);</span> <span class="token comment">// [0,1,2,3,4,5]</span>
 <span class="token function">initializeArrayWithRange</span><span class="token punctuation">(</span><span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">);</span> <span class="token comment">// [3,4,5,6,7]</span>
 <span class="token function">initializeArrayWithRange</span><span class="token punctuation">(</span><span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">);</span> <span class="token comment">// [0,2,4,6,8]</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="initializearraywithvalues" class="section double-padded">initializeArrayWithValues</h3><div class="section double-padded"><p>Initializes and fills an array with the specified values.</p><p>Use <code>Array(n)</code> to create an array of the desired length, <code>fill(v)</code> to fill it with the desired values. You can omit <code>value</code> to use a default value of <code>0</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">initializeArrayWithValues</span> <span class="token operator">=</span> <span class="token punctuation">(</span>n<span class="token punctuation">,</span> value <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token function">Array</span><span class="token punctuation">(</span>n<span class="token punctuation">).</span><span class="token function">fill</span><span class="token punctuation">(</span>value<span class="token punctuation">);</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="initializearraywithvalues" class="section double-padded">initializeArrayWithValues</h3><div class="section double-padded"><p>Initializes and fills an array with the specified values.</p><p>Use <code>Array(n)</code> to create an array of the desired length, <code>fill(v)</code> to fill it with the desired values. You can omit <code>val</code> to use a default value of <code>0</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">initializeArrayWithValues</span> <span class="token operator">=</span> <span class="token punctuation">(</span>n<span class="token punctuation">,</span> val <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token function">Array</span><span class="token punctuation">(</span>n<span class="token punctuation">).</span><span class="token function">fill</span><span class="token punctuation">(</span>val<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">initializeArrayWithValues</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">);</span> <span class="token comment">// [2,2,2,2,2]</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="intersection" class="section double-padded">intersection</h3><div class="section double-padded"><p>Returns a list of elements that exist in both arrays.</p><p>Create a <code>Set</code> from <code>b</code>, then use <code>Array.filter()</code> on <code>a</code> to only keep values contained in <code>b</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">intersection</span> <span class="token operator">=</span> <span class="token punctuation">(</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">const</span> s <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Set</span><span class="token punctuation">(</span>b<span class="token punctuation">);</span>
@@ -209,16 +213,6 @@ Object<span class="token punctuation">.</span><span class="token function">assig
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token keyword">let</span> myArray <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'a'</span><span class="token punctuation">,</span> <span class="token string">'b'</span><span class="token punctuation">,</span> <span class="token string">'c'</span><span class="token punctuation">,</span> <span class="token string">'d'</span><span class="token punctuation">];</span>
 <span class="token keyword">let</span> pulled <span class="token operator">=</span> <span class="token function">pullAtValue</span><span class="token punctuation">(</span>myArray<span class="token punctuation">, [</span><span class="token string">'b'</span><span class="token punctuation">,</span> <span class="token string">'d'</span><span class="token punctuation">]);</span> <span class="token comment">// myArray = [ 'a', 'c' ] , pulled = [ 'b', 'd' ]</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="quicksort" class="section double-padded">quickSort</h3><div class="section double-padded"><p>QuickSort an Array (ascending sort by default).</p><p>Use recursion. Use <code>Array.filter</code> and spread operator (<code>...</code>) to create an array that all elements with values less than the pivot come before the pivot, and all elements with values greater than the pivot come after it. If the parameter <code>desc</code> is truthy, return array sorts in descending order.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">quickSort</span> <span class="token operator">=</span> <span class="token punctuation">([</span>n<span class="token punctuation">,</span> <span class="token operator">...</span>nums<span class="token punctuation">],</span> desc<span class="token punctuation">)</span> <span class="token operator">=></span>
-  <span class="token function">isNaN</span><span class="token punctuation">(</span>n<span class="token punctuation">)</span>
-    <span class="token operator">?</span> <span class="token punctuation">[]
-    : [</span>
-        <span class="token operator">...</span><span class="token function">quickSort</span><span class="token punctuation">(</span>nums<span class="token punctuation">.</span><span class="token function">filter</span><span class="token punctuation">(</span>v <span class="token operator">=></span> <span class="token punctuation">(</span>desc <span class="token operator">?</span> v <span class="token operator">></span> n <span class="token punctuation">:</span> v <span class="token operator">&lt;=</span> n<span class="token punctuation">)),</span> desc<span class="token punctuation">),</span>
-        n<span class="token punctuation">,</span>
-        <span class="token operator">...</span><span class="token function">quickSort</span><span class="token punctuation">(</span>nums<span class="token punctuation">.</span><span class="token function">filter</span><span class="token punctuation">(</span>v <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token operator">!</span>desc <span class="token operator">?</span> v <span class="token operator">></span> n <span class="token punctuation">:</span> v <span class="token operator">&lt;=</span> n<span class="token punctuation">)),</span> desc<span class="token punctuation">)
-      ];</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">quickSort</span><span class="token punctuation">([</span><span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">]);</span> <span class="token comment">// [1,2,3,4]</span>
-<span class="token function">quickSort</span><span class="token punctuation">([</span><span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">],</span> <span class="token boolean">true</span><span class="token punctuation">);</span> <span class="token comment">// [4,3,2,1]</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="reducedfilter" class="section double-padded">reducedFilter</h3><div class="section double-padded"><p>Filter an array of objects based on a condition while also filtering out unspecified keys.</p><p>Use <code>Array.filter()</code> to filter the array based on the predicate <code>fn</code> so that it returns the objects for which the condition returned a truthy value. On the filtered array, use <code>Array.map()</code> to return the new object using <code>Array.reduce()</code> to filter out the keys which were not supplied as the <code>keys</code> argument.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">reducedFilter</span> <span class="token operator">=</span> <span class="token punctuation">(</span>data<span class="token punctuation">,</span> keys<span class="token punctuation">,</span> fn<span class="token punctuation">)</span> <span class="token operator">=></span>
   data<span class="token punctuation">.</span><span class="token function">filter</span><span class="token punctuation">(</span>fn<span class="token punctuation">).</span><span class="token function">map</span><span class="token punctuation">(</span>el <span class="token operator">=></span>
     keys<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">((</span>acc<span class="token punctuation">,</span> key<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
@@ -260,7 +254,7 @@ Object<span class="token punctuation">.</span><span class="token function">assig
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">sampleSize</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">],</span> <span class="token number">2</span><span class="token punctuation">);</span> <span class="token comment">// [3,1]</span>
 <span class="token function">sampleSize</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">],</span> <span class="token number">4</span><span class="token punctuation">);</span> <span class="token comment">// [2,3,1]</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="shuffle" class="section double-padded">shuffle</h3><div class="section double-padded"><p>Randomizes the order of the values of an array, returning a new array.</p><p>Uses the Fisher-Yates algorithm to reorder the elements of the array, based on the <a href="https://github.com/lodash/lodash/blob/b2ea6b1cd251796dcb5f9700c4911a7b6223920b/shuffle.js">Lodash implementation</a>, but as a pure function.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">shuffle</span> <span class="token operator">=</span> <span class="token punctuation">([</span><span class="token operator">...</span>arr<span class="token punctuation">])</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="shuffle" class="section double-padded">shuffle</h3><div class="section double-padded"><p>Randomizes the order of the values of an array, returning a new array.</p><p>Uses the <a href="https://github.com/chalarangelo/30-seconds-of-code#shuffle">Fisher-Yates algorithm</a> to reorder the elements of the array.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">shuffle</span> <span class="token operator">=</span> <span class="token punctuation">([</span><span class="token operator">...</span>arr<span class="token punctuation">])</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">let</span> m <span class="token operator">=</span> arr<span class="token punctuation">.</span>length<span class="token punctuation">;</span>
   <span class="token keyword">while</span> <span class="token punctuation">(</span>m<span class="token punctuation">) {</span>
     <span class="token keyword">const</span> i <span class="token operator">=</span> Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">()</span> <span class="token operator">*</span> m<span class="token operator">--</span><span class="token punctuation">);
@@ -270,7 +264,7 @@ Object<span class="token punctuation">.</span><span class="token function">assig
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token keyword">const</span> foo <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">];</span>
 <span class="token function">shuffle</span><span class="token punctuation">(</span>foo<span class="token punctuation">);</span> <span class="token comment">// [2,3,1], foo = [1,2,3]</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="similarity" class="section double-padded">similarity</h3><div class="section double-padded"><p>Returns an array of elements that appear in both arrays.</p><p>Use <code>filter()</code> to remove values that are not part of <code>values</code>, determined using <code>includes()</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">similarity</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> values<span class="token punctuation">)</span> <span class="token operator">=></span> arr<span class="token punctuation">.</span><span class="token function">filter</span><span class="token punctuation">(</span>v <span class="token operator">=></span> values<span class="token punctuation">.</span><span class="token function">includes</span><span class="token punctuation">(</span>v<span class="token punctuation">));</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="similarity" class="section double-padded">similarity</h3><div class="section double-padded"><p>Returns an array of elements that appear in both arrays.</p><p>Use <code>Array.filter()</code> to remove values that are not part of <code>values</code>, determined using <code>Array.includes()</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">similarity</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> values<span class="token punctuation">)</span> <span class="token operator">=></span> arr<span class="token punctuation">.</span><span class="token function">filter</span><span class="token punctuation">(</span>v <span class="token operator">=></span> values<span class="token punctuation">.</span><span class="token function">includes</span><span class="token punctuation">(</span>v<span class="token punctuation">));</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">similarity</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">], [</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">]);</span> <span class="token comment">// [1,2]</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="sortedindex" class="section double-padded">sortedIndex</h3><div class="section double-padded"><p>Returns the lowest index at which value should be inserted into array in order to maintain its sort order.</p><p>Check if the array is sorted in descending order (loosely). Use <code>Array.findIndex()</code> to find the appropriate index where the element should be inserted.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">sortedIndex</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> n<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">const</span> isDescending <span class="token operator">=</span> arr<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">></span> arr<span class="token punctuation">[</span>arr<span class="token punctuation">.</span>length <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">];</span>
@@ -285,7 +279,7 @@ Object<span class="token punctuation">.</span><span class="token function">assig
   <span class="token keyword">return</span> <span class="token punctuation">[</span><span class="token operator">...</span>a<span class="token punctuation">.</span><span class="token function">filter</span><span class="token punctuation">(</span>x <span class="token operator">=> !</span>sB<span class="token punctuation">.</span><span class="token function">has</span><span class="token punctuation">(</span>x<span class="token punctuation">)),</span> <span class="token operator">...</span>b<span class="token punctuation">.</span><span class="token function">filter</span><span class="token punctuation">(</span>x <span class="token operator">=> !</span>sA<span class="token punctuation">.</span><span class="token function">has</span><span class="token punctuation">(</span>x<span class="token punctuation">))];
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">symmetricDifference</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">], [</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">]);</span> <span class="token comment">// [3,4]</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="tail" class="section double-padded">tail</h3><div class="section double-padded"><p>Returns all elements in an array except for the first one.</p><p>Return <code>arr.slice(1)</code> if the array's <code>length</code> is more than <code>1</code>, otherwise, return the whole array.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">tail</span> <span class="token operator">=</span> arr <span class="token operator">=></span> <span class="token punctuation">(</span>arr<span class="token punctuation">.</span>length <span class="token operator">></span> <span class="token number">1</span> <span class="token operator">?</span> arr<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">) :</span> arr<span class="token punctuation">);</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="tail" class="section double-padded">tail</h3><div class="section double-padded"><p>Returns all elements in an array except for the first one.</p><p>Return <code>Array.slice(1)</code> if the array's <code>length</code> is more than <code>1</code>, otherwise, return the whole array.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">tail</span> <span class="token operator">=</span> arr <span class="token operator">=></span> <span class="token punctuation">(</span>arr<span class="token punctuation">.</span>length <span class="token operator">></span> <span class="token number">1</span> <span class="token operator">?</span> arr<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">) :</span> arr<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">tail</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">]);</span> <span class="token comment">// [2,3]</span>
 <span class="token function">tail</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">]);</span> <span class="token comment">// [1]</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="take" class="section double-padded">take</h3><div class="section double-padded"><p>Returns an array with n elements removed from the beginning.</p><p>Use <code>Array.slice()</code> to create a slice of the array with <code>n</code> elements taken from the beginning.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">take</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> n <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">=></span> arr<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">,</span> n<span class="token punctuation">);</span>
@@ -317,7 +311,7 @@ Object<span class="token punctuation">.</span><span class="token function">assig
   document<span class="token punctuation">.</span>documentElement<span class="token punctuation">.</span>clientHeight <span class="token operator">+</span> window<span class="token punctuation">.</span>scrollY <span class="token operator">>=</span>
   <span class="token punctuation">(</span>document<span class="token punctuation">.</span>documentElement<span class="token punctuation">.</span>scrollHeight <span class="token operator">||</span> document<span class="token punctuation">.</span>documentElement<span class="token punctuation">.</span>clientHeight<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">bottomVisible</span><span class="token punctuation">();</span> <span class="token comment">// true</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="copytoclipboard" class="section double-padded">copyToClipboard</h3><div class="section double-padded"><p>Copy a string to the clipboard. Only works as a result of user action (i.e. inside a <code>click</code> event listener).</p><p>Create a new <code>&lt;textarea&gt;</code> element, fill it with the supplied data and add it to the HTML document. Use <code>Selection.getRangeAt()</code>to store the selected range (if any). Use <code>document.execCommand('copy')</code> to copy to the clipboard. Remove the <code>&lt;textarea&gt;</code> element from the HTML document. Finally, use <code>Selection().addRange()</code> to recover the original selected range (if any).</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">copyToClipboard</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token punctuation">{</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="copytoclipboard" class="section double-padded">copyToClipboard<mark class="tag">advanced</mark></h3><div class="section double-padded"><p>Copy a string to the clipboard. Only works as a result of user action (i.e. inside a <code>click</code> event listener).</p><p>Create a new <code>&lt;textarea&gt;</code> element, fill it with the supplied data and add it to the HTML document. Use <code>Selection.getRangeAt()</code>to store the selected range (if any). Use <code>document.execCommand('copy')</code> to copy to the clipboard. Remove the <code>&lt;textarea&gt;</code> element from the HTML document. Finally, use <code>Selection().addRange()</code> to recover the original selected range (if any).</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">copyToClipboard</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">const</span> el <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">'textarea'</span><span class="token punctuation">);</span>
   el<span class="token punctuation">.</span>value <span class="token operator">=</span> str<span class="token punctuation">;</span>
   el<span class="token punctuation">.</span><span class="token function">setAttribute</span><span class="token punctuation">(</span><span class="token string">'readonly'</span><span class="token punctuation">,</span> <span class="token string">''</span><span class="token punctuation">);</span>
@@ -368,7 +362,7 @@ Object<span class="token punctuation">.</span><span class="token function">assig
   <span class="token keyword">if</span> <span class="token punctuation">(</span>location<span class="token punctuation">.</span>protocol <span class="token operator">!==</span> <span class="token string">'https:'</span><span class="token punctuation">)</span> location<span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token string">'https://'</span> <span class="token operator">+</span> location<span class="token punctuation">.</span>href<span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">'//'</span><span class="token punctuation">)[</span><span class="token number">1</span><span class="token punctuation">]);
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">httpsRedirect</span><span class="token punctuation">();</span> <span class="token comment">// If you are on http://mydomain.com, you are redirected to https://mydomain.com</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="onuserinputchange" class="section double-padded">onUserInputChange</h3><div class="section double-padded"><p>Run the callback whenever the user input type changes (<code>mouse</code> or <code>touch</code>). Useful for enabling/disabling code depending on the input device. This process is dynamic and works with hybrid devices (e.g. touchscreen laptops).</p><p>Use two event listeners. Assume <code>mouse</code> input initially and bind a <code>touchstart</code> event listener to the document. On <code>touchstart</code>, add a <code>mousemove</code> event listener to listen for two consecutive <code>mousemove</code> events firing within 20ms, using <code>performance.now()</code>. Run the callback with the input type as an argument in either of these situations.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">onUserInputChange</span> <span class="token operator">=</span> callback <span class="token operator">=></span> <span class="token punctuation">{</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="onuserinputchange" class="section double-padded">onUserInputChange<mark class="tag">advanced</mark></h3><div class="section double-padded"><p>Run the callback whenever the user input type changes (<code>mouse</code> or <code>touch</code>). Useful for enabling/disabling code depending on the input device. This process is dynamic and works with hybrid devices (e.g. touchscreen laptops).</p><p>Use two event listeners. Assume <code>mouse</code> input initially and bind a <code>touchstart</code> event listener to the document. On <code>touchstart</code>, add a <code>mousemove</code> event listener to listen for two consecutive <code>mousemove</code> events firing within 20ms, using <code>performance.now()</code>. Run the callback with the input type as an argument in either of these situations.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">onUserInputChange</span> <span class="token operator">=</span> callback <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">let</span> type <span class="token operator">=</span> <span class="token string">'mouse'</span><span class="token punctuation">,</span>
     lastTime <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span>
   <span class="token keyword">const</span> <span class="token function-variable function">mousemoveHandler</span> <span class="token operator">=</span> <span class="token punctuation">()</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
@@ -388,7 +382,7 @@ Object<span class="token punctuation">.</span><span class="token function">assig
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="redirect" class="section double-padded">redirect</h3><div class="section double-padded"><p>Redirects to a specified URL.</p><p>Use <code>window.location.href</code> or <code>window.location.replace()</code> to redirect to <code>url</code>. Pass a second argument to simulate a link click (<code>true</code> - default) or an HTTP redirect (<code>false</code>).</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">redirect</span> <span class="token operator">=</span> <span class="token punctuation">(</span>url<span class="token punctuation">,</span> asLink <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">)</span> <span class="token operator">=></span>
   asLink <span class="token operator">?</span> <span class="token punctuation">(</span>window<span class="token punctuation">.</span>location<span class="token punctuation">.</span>href <span class="token operator">=</span> url<span class="token punctuation">) :</span> window<span class="token punctuation">.</span>location<span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span>url<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">redirect</span><span class="token punctuation">(</span><span class="token string">'https://google.com'</span><span class="token punctuation">);</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="runasync" class="section double-padded">runAsync</h3><div class="section double-padded"><p>Runs a function in a separate thread by using a <a href="https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers">Web Worker</a>, allowing long running functions to not block the UI.</p><p>Create a new <code>Worker</code> using a <code>Blob</code> object URL, the contents of which should be the stringified version of the supplied function. Immediately post the return value of calling the function back. Return a promise, listening for <code>onmessage</code> and <code>onerror</code> events and resolving the data posted back from the worker, or throwing an error.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">runAsync</span> <span class="token operator">=</span> fn <span class="token operator">=></span> <span class="token punctuation">{</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="runasync" class="section double-padded">runAsync<mark class="tag">advanced</mark></h3><div class="section double-padded"><p>Runs a function in a separate thread by using a <a href="https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers">Web Worker</a>, allowing long running functions to not block the UI.</p><p>Create a new <code>Worker</code> using a <code>Blob</code> object URL, the contents of which should be the stringified version of the supplied function. Immediately post the return value of calling the function back. Return a promise, listening for <code>onmessage</code> and <code>onerror</code> events and resolving the data posted back from the worker, or throwing an error.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">runAsync</span> <span class="token operator">=</span> fn <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">const</span> blob <span class="token operator">=</span> <span class="token template-string"><span class="token string">`var fn = </span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>fn<span class="token punctuation">.</span><span class="token function">toString</span><span class="token punctuation">()</span><span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">; postMessage(fn());`</span></span><span class="token punctuation">;</span>
   <span class="token keyword">const</span> worker <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Worker</span><span class="token punctuation">(</span>
     URL<span class="token punctuation">.</span><span class="token function">createObjectURL</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Blob</span><span class="token punctuation">([</span>blob<span class="token punctuation">]), {</span>
@@ -432,16 +426,10 @@ Object<span class="token punctuation">.</span><span class="token function">assig
   }
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">scrollToTop</span><span class="token punctuation">();</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="setstyle" class="section double-padded">setStyle</h3><div class="section double-padded"><p>Sets the value of a CSS rule for the specified element.</p><p>Use <code>element.style</code> to set the value of the CSS rule for the specified element to <code>value</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">setStyle</span> <span class="token operator">=</span> <span class="token punctuation">(</span>el<span class="token punctuation">,</span> ruleName<span class="token punctuation">,</span> value<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">(</span>el<span class="token punctuation">.</span>style<span class="token punctuation">[</span>ruleName<span class="token punctuation">]</span> <span class="token operator">=</span> value<span class="token punctuation">);</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="setstyle" class="section double-padded">setStyle</h3><div class="section double-padded"><p>Sets the value of a CSS rule for the specified element.</p><p>Use <code>element.style</code> to set the value of the CSS rule for the specified element to <code>val</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">setStyle</span> <span class="token operator">=</span> <span class="token punctuation">(</span>el<span class="token punctuation">,</span> ruleName<span class="token punctuation">,</span> val<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">(</span>el<span class="token punctuation">.</span>style<span class="token punctuation">[</span>ruleName<span class="token punctuation">]</span> <span class="token operator">=</span> val<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">setStyle</span><span class="token punctuation">(</span>document<span class="token punctuation">.</span><span class="token function">querySelector</span><span class="token punctuation">(</span><span class="token string">'p'</span><span class="token punctuation">),</span> <span class="token string">'font-size'</span><span class="token punctuation">,</span> <span class="token string">'20px'</span><span class="token punctuation">);</span> <span class="token comment">// The first &lt;p> element on the page will have a font-size of 20px</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="show" class="section double-padded">show</h3><div class="section double-padded"><p>Shows all the elements specified.</p><p>Use the spread operator (<code>...</code>) and <code>Array.forEach()</code> to clear the <code>display</code> property for each element specified.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">show</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>el<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">[</span><span class="token operator">...</span>el<span class="token punctuation">].</span><span class="token function">forEach</span><span class="token punctuation">(</span>e <span class="token operator">=></span> <span class="token punctuation">(</span>e<span class="token punctuation">.</span>style<span class="token punctuation">.</span>display <span class="token operator">=</span> <span class="token string">''</span><span class="token punctuation">));</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">show</span><span class="token punctuation">(</span>document<span class="token punctuation">.</span><span class="token function">querySelectorAll</span><span class="token punctuation">(</span><span class="token string">'img'</span><span class="token punctuation">));</span> <span class="token comment">// Shows all &lt;img> elements on the page</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="speechsynthesis" class="section double-padded">speechSynthesis</h3><div class="section double-padded"><p>Performs speech synthesis (experimental).</p><p>Use <code>SpeechSynthesisUtterance.voice</code> and <code>window.speechSynthesis.getVoices()</code> to convert a message to speech. Use <code>window.speechSynthesis.speak()</code> to play the message.</p><p>Learn more about the <a href="https://developer.mozilla.org/en-US/docs/Web/API/SpeechSynthesisUtterance">SpeechSynthesisUtterance interface of the Web Speech API</a>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">speechSynthesis</span> <span class="token operator">=</span> message <span class="token operator">=></span> <span class="token punctuation">{</span>
-  <span class="token keyword">const</span> msg <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">SpeechSynthesisUtterance</span><span class="token punctuation">(</span>message<span class="token punctuation">);</span>
-  msg<span class="token punctuation">.</span>voice <span class="token operator">=</span> window<span class="token punctuation">.</span>speechSynthesis<span class="token punctuation">.</span><span class="token function">getVoices</span><span class="token punctuation">()[</span><span class="token number">0</span><span class="token punctuation">];</span>
-  window<span class="token punctuation">.</span>speechSynthesis<span class="token punctuation">.</span><span class="token function">speak</span><span class="token punctuation">(</span>msg<span class="token punctuation">);
-};</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">speechSynthesis</span><span class="token punctuation">(</span><span class="token string">'Hello, World'</span><span class="token punctuation">);</span> <span class="token comment">// // plays the message</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="toggleclass" class="section double-padded">toggleClass</h3><div class="section double-padded"><p>Toggle a class for an element.</p><p>Use <code>element.classList.toggle()</code> to toggle the specified class for the element.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">toggleClass</span> <span class="token operator">=</span> <span class="token punctuation">(</span>el<span class="token punctuation">,</span> className<span class="token punctuation">)</span> <span class="token operator">=></span> el<span class="token punctuation">.</span>classList<span class="token punctuation">.</span><span class="token function">toggle</span><span class="token punctuation">(</span>className<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">toggleClass</span><span class="token punctuation">(</span>document<span class="token punctuation">.</span><span class="token function">querySelector</span><span class="token punctuation">(</span><span class="token string">'p.special'</span><span class="token punctuation">),</span> <span class="token string">'special'</span><span class="token punctuation">);</span> <span class="token comment">// The paragraph will not have the 'special' class anymore</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="uuidgeneratorbrowser" class="section double-padded">UUIDGeneratorBrowser</h3><div class="section double-padded"><p>Generates a UUID in a browser.</p><p>Use <code>crypto</code> API to generate a UUID, compliant with <a href="https://www.ietf.org/rfc/rfc4122.txt">RFC4122</a> version 4.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">UUIDGeneratorBrowser</span> <span class="token operator">=</span> <span class="token punctuation">()</span> <span class="token operator">=></span>
@@ -468,11 +456,6 @@ Object<span class="token punctuation">.</span><span class="token function">assig
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="getdaysdiffbetweendates" class="section double-padded">getDaysDiffBetweenDates</h3><div class="section double-padded"><p>Returns the difference (in days) between two dates.</p><p>Calculate the difference (in days) between two <code>Date</code> objects.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">getDaysDiffBetweenDates</span> <span class="token operator">=</span> <span class="token punctuation">(</span>dateInitial<span class="token punctuation">,</span> dateFinal<span class="token punctuation">)</span> <span class="token operator">=></span>
   <span class="token punctuation">(</span>dateFinal <span class="token operator">-</span> dateInitial<span class="token punctuation">)</span> <span class="token operator">/</span> <span class="token punctuation">(</span><span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">3600</span> <span class="token operator">*</span> <span class="token number">24</span><span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">getDaysDiffBetweenDates</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token string">'2017-12-13'</span><span class="token punctuation">),</span> <span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token string">'2017-12-22'</span><span class="token punctuation">));</span> <span class="token comment">// 9</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="jsontodate" class="section double-padded">JSONToDate</h3><div class="section double-padded"><p>Converts a JSON object to a date.</p><p>Use <code>Date()</code>, to convert dates in JSON format to readable format (<code>dd/mm/yyyy</code>).</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">JSONToDate</span> <span class="token operator">=</span> arr <span class="token operator">=></span> <span class="token punctuation">{</span>
-  <span class="token keyword">const</span> dt <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token function">parseInt</span><span class="token punctuation">(</span>arr<span class="token punctuation">.</span><span class="token function">toString</span><span class="token punctuation">().</span><span class="token function">substr</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">)));</span>
-  <span class="token keyword">return</span> <span class="token template-string"><span class="token string">`</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>dt<span class="token punctuation">.</span><span class="token function">getDate</span><span class="token punctuation">()</span><span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">/</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>dt<span class="token punctuation">.</span><span class="token function">getMonth</span><span class="token punctuation">()</span> <span class="token operator">+</span> <span class="token number">1</span><span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">/</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>dt<span class="token punctuation">.</span><span class="token function">getFullYear</span><span class="token punctuation">()</span><span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">`</span></span><span class="token punctuation">;
-};</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">JSONToDate</span><span class="token punctuation">(</span><span class="token regex">/Date(1489525200000)/</span><span class="token punctuation">);</span> <span class="token comment">// "14/3/2017"</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="toenglishdate" class="section double-padded">toEnglishDate</h3><div class="section double-padded"><p>Converts a date from American format to English format.</p><p>Use <code>Date.toISOString()</code>, <code>split('T')</code> and <code>replace()</code> to convert a date from American format to the English format. Throws an error if the passed time cannot be converted to a date.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">toEnglishDate</span> <span class="token operator">=</span> time <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">try</span> <span class="token punctuation">{</span>
     <span class="token keyword">return new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span>time<span class="token punctuation">)
@@ -482,7 +465,7 @@ Object<span class="token punctuation">.</span><span class="token function">assig
   }</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">e</span><span class="token punctuation">) {}
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">toEnglishDate</span><span class="token punctuation">(</span><span class="token string">'09/21/2010'</span><span class="token punctuation">);</span> <span class="token comment">// '21/09/2010'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="tomorrow" class="section double-padded">tomorrow</h3><div class="section double-padded"><p>Results in a string representation of tomorrow's date. Use <code>new Date()</code> to get today's date, adding <code>86400000</code> of seconds to it(24 hours), using <code>toISOString</code> to convert Date object to string.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">tomorrow</span> <span class="token operator">=</span> <span class="token punctuation">()</span> <span class="token operator">=></span> <span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">().</span><span class="token function">getTime</span><span class="token punctuation">()</span> <span class="token operator">+</span> <span class="token number">86400000</span><span class="token punctuation">).</span><span class="token function">toISOString</span><span class="token punctuation">().</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">'T'</span><span class="token punctuation">)[</span><span class="token number">0</span><span class="token punctuation">];</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="tomorrow" class="section double-padded">tomorrow</h3><div class="section double-padded"><p>Results in a string representation of tomorrow's date. Use <code>new Date()</code> to get today's date, adding <code>86400000</code> of seconds to it(24 hours), using <code>Date.toISOString()</code> to convert Date object to string.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">tomorrow</span> <span class="token operator">=</span> <span class="token punctuation">()</span> <span class="token operator">=></span> <span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">().</span><span class="token function">getTime</span><span class="token punctuation">()</span> <span class="token operator">+</span> <span class="token number">86400000</span><span class="token punctuation">).</span><span class="token function">toISOString</span><span class="token punctuation">().</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">'T'</span><span class="token punctuation">)[</span><span class="token number">0</span><span class="token punctuation">];</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">tomorrow</span><span class="token punctuation">();</span> <span class="token comment">// 2017-12-27 (if current date is 2017-12-26)</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><h2 style="text-align:center">Function</h2><div class="card fluid"><h3 id="chainasync" class="section double-padded">chainAsync</h3><div class="section double-padded"><p>Chains asynchronous functions.</p><p>Loop through an array of functions containing asynchronous events, calling <code>next</code> when each asynchronous event has completed.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">chainAsync</span> <span class="token operator">=</span> fns <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">let</span> curr <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span>
@@ -551,25 +534,20 @@ document<span class="token punctuation">.</span>body<span class="token punctuati
   <span class="token keyword">await</span> <span class="token function">sleep</span><span class="token punctuation">(</span><span class="token number">1000</span><span class="token punctuation">);</span>
   console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">'I woke up after 1 second.'</span><span class="token punctuation">);
 }</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><h2 style="text-align:center">Logic</h2><div class="card fluid"><h3 id="negate" class="section double-padded">negate</h3><div class="section double-padded"><p>Negates a predicate function.</p><p>Take a predicate function and apply <code>not</code> to it with its arguments.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">negate</span> <span class="token operator">=</span> func <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=> !</span><span class="token function">func</span><span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">);</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><h2 style="text-align:center">Logic</h2><div class="card fluid"><h3 id="negate" class="section double-padded">negate</h3><div class="section double-padded"><p>Negates a predicate function.</p><p>Take a predicate function and apply the not operator (<code>!</code>) to it with its arguments.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">negate</span> <span class="token operator">=</span> func <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=> !</span><span class="token function">func</span><span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">filter</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">6</span><span class="token punctuation">],</span> <span class="token function">negate</span><span class="token punctuation">(</span>isEven<span class="token punctuation">));</span> <span class="token comment">// [1, 3, 5]</span>
 <span class="token function">negate</span><span class="token punctuation">(</span>isOdd<span class="token punctuation">)(</span><span class="token number">1</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><h2 style="text-align:center">Math</h2><div class="card fluid"><h3 id="average" class="section double-padded">average</h3><div class="section double-padded"><p>Returns the average of an of two or more numbers/arrays.</p><p>Use <code>Array.reduce()</code> to add each value to an accumulator, initialized with a value of <code>0</code>, divide by the <code>length</code> of the array.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">average</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
-  <span class="token keyword">const</span> nums <span class="token operator">=</span> <span class="token punctuation">[].</span><span class="token function">concat</span><span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">);</span>
-  <span class="token keyword">return</span> nums<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">((</span>acc<span class="token punctuation">,</span> val<span class="token punctuation">)</span> <span class="token operator">=></span> acc <span class="token operator">+</span> val<span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">/</span> nums<span class="token punctuation">.</span>length<span class="token punctuation">;
-};</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">average</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">]);</span> <span class="token comment">// 2</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><h2 style="text-align:center">Math</h2><div class="card fluid"><h3 id="average" class="section double-padded">average</h3><div class="section double-padded"><p>Returns the average of an of two or more numbers.</p><p>Use <code>Array.reduce()</code> to add each value to an accumulator, initialized with a value of <code>0</code>, divide by the <code>length</code> of the array.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">average</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>nums<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">[</span><span class="token operator">...</span>nums<span class="token punctuation">].</span><span class="token function">reduce</span><span class="token punctuation">((</span>acc<span class="token punctuation">,</span> val<span class="token punctuation">)</span> <span class="token operator">=></span> acc <span class="token operator">+</span> val<span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">/</span> nums<span class="token punctuation">.</span>length<span class="token punctuation">;</span>
+</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">average</span><span class="token punctuation">(</span><span class="token operator">...</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">]);</span> <span class="token comment">// 2</span>
 <span class="token function">average</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">);</span> <span class="token comment">// 2</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="clampnumber" class="section double-padded">clampNumber</h3><div class="section double-padded"><p>Clamps <code>num</code> within the inclusive range specified by the boundary values <code>a</code> and <code>b</code>.</p><p>If <code>num</code> falls within the range, return <code>num</code>. Otherwise, return the nearest number in the range.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">clampNumber</span> <span class="token operator">=</span> <span class="token punctuation">(</span>num<span class="token punctuation">,</span> a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> Math<span class="token punctuation">.</span><span class="token function">max</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">min</span><span class="token punctuation">(</span>num<span class="token punctuation">,</span> Math<span class="token punctuation">.</span><span class="token function">max</span><span class="token punctuation">(</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)),</span> Math<span class="token punctuation">.</span><span class="token function">min</span><span class="token punctuation">(</span>a<span class="token punctuation">,</span> b<span class="token punctuation">));</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">clampNumber</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">);</span> <span class="token comment">// 3</span>
 <span class="token function">clampNumber</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">5</span><span class="token punctuation">);</span> <span class="token comment">// -1</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="collatz" class="section double-padded">collatz</h3><div class="section double-padded"><p>Applies the Collatz algorithm.</p><p>If <code>n</code> is even, return <code>n/2</code>. Otherwise, return <code>3n+1</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">collatz</span> <span class="token operator">=</span> n <span class="token operator">=></span> <span class="token punctuation">(</span>n <span class="token operator">%</span> <span class="token number">2</span> <span class="token operator">==</span> <span class="token number">0</span> <span class="token operator">?</span> n <span class="token operator">/</span> <span class="token number">2</span> <span class="token punctuation">:</span> <span class="token number">3</span> <span class="token operator">*</span> n <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">);</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">collatz</span><span class="token punctuation">(</span><span class="token number">8</span><span class="token punctuation">);</span> <span class="token comment">// 4</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="digitize" class="section double-padded">digitize</h3><div class="section double-padded"><p>Converts a number to an array of digits.</p><p>Convert the number to a string, using spread operators in ES6(<code>[...string]</code>) build an array. Use <code>Array.map()</code> and <code>parseInt()</code> to transform each value to an integer.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">digitize</span> <span class="token operator">=</span> n <span class="token operator">=></span> <span class="token punctuation">[</span><span class="token operator">...</span><span class="token punctuation">(</span><span class="token string">''</span> <span class="token operator">+</span> n<span class="token punctuation">)].</span><span class="token function">map</span><span class="token punctuation">(</span>i <span class="token operator">=></span> <span class="token function">parseInt</span><span class="token punctuation">(</span>i<span class="token punctuation">));</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="digitize" class="section double-padded">digitize</h3><div class="section double-padded"><p>Converts a number to an array of digits.</p><p>Convert the number to a string, using the spread operator (<code>...</code>) to build an array. Use <code>Array.map()</code> and <code>parseInt()</code> to transform each value to an integer.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">digitize</span> <span class="token operator">=</span> n <span class="token operator">=></span> <span class="token punctuation">[</span><span class="token operator">...</span><span class="token template-string"><span class="token string">`</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>n<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">`</span></span><span class="token punctuation">].</span><span class="token function">map</span><span class="token punctuation">(</span>i <span class="token operator">=></span> <span class="token function">parseInt</span><span class="token punctuation">(</span>i<span class="token punctuation">));</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">digitize</span><span class="token punctuation">(</span><span class="token number">123</span><span class="token punctuation">);</span> <span class="token comment">// [1, 2, 3]</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="distance" class="section double-padded">distance</h3><div class="section double-padded"><p>Returns the distance between two points.</p><p>Use <code>Math.hypot()</code> to calculate the Euclidean distance between two points.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">distance</span> <span class="token operator">=</span> <span class="token punctuation">(</span>x0<span class="token punctuation">,</span> y0<span class="token punctuation">,</span> x1<span class="token punctuation">,</span> y1<span class="token punctuation">)</span> <span class="token operator">=></span> Math<span class="token punctuation">.</span><span class="token function">hypot</span><span class="token punctuation">(</span>x1 <span class="token operator">-</span> x0<span class="token punctuation">,</span> y1 <span class="token operator">-</span> y0<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">distance</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">);</span> <span class="token comment">// 2.23606797749979</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="elo" class="section double-padded">elo</h3><div class="section double-padded"><p>Computes the new ratings between two or more opponents using the <a href="https://en.wikipedia.org/wiki/Elo_rating_system">Elo rating system</a>. It takes an array of pre-ratings and returns an array containing post-ratings. The array should be ordered from best performer to worst performer (winner -&gt; loser).</p><p>Use the exponent <code>**</code> operator and math operators to compute the expected score (chance of winning) of each opponent and compute the new rating for each. Loop through the ratings, using each permutation to compute the post-Elo rating for each player in a pairwise fashion. Omit the second argument to use the default K-factor of 32, or supply a custom K-factor value. For details on the third argument, see the last example.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">elo</span> <span class="token operator">=</span> <span class="token punctuation">([</span><span class="token operator">...</span>ratings<span class="token punctuation">],</span> kFactor <span class="token operator">=</span> <span class="token number">32</span><span class="token punctuation">,</span> selfRating<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="elo" class="section double-padded">elo<mark class="tag">advanced</mark></h3><div class="section double-padded"><p>Computes the new ratings between two or more opponents using the <a href="https://en.wikipedia.org/wiki/Elo_rating_system">Elo rating system</a>. It takes an array of pre-ratings and returns an array containing post-ratings. The array should be ordered from best performer to worst performer (winner -&gt; loser).</p><p>Use the exponent <code>**</code> operator and math operators to compute the expected score (chance of winning). of each opponent and compute the new rating for each. Loop through the ratings, using each permutation to compute the post-Elo rating for each player in a pairwise fashion. Omit the second argument to use the default <code>kFactor</code> of 32.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">elo</span> <span class="token operator">=</span> <span class="token punctuation">([</span><span class="token operator">...</span>ratings<span class="token punctuation">],</span> kFactor <span class="token operator">=</span> <span class="token number">32</span><span class="token punctuation">,</span> selfRating<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">const</span> <span class="token punctuation">[</span>a<span class="token punctuation">,</span> b<span class="token punctuation">]</span> <span class="token operator">=</span> ratings<span class="token punctuation">;</span>
   <span class="token keyword">const</span> <span class="token function-variable function">expectedScore</span> <span class="token operator">=</span> <span class="token punctuation">(</span>self<span class="token punctuation">,</span> opponent<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token number">1</span> <span class="token operator">/</span> <span class="token punctuation">(</span><span class="token number">1</span> <span class="token operator">+</span> <span class="token number">10</span> <span class="token operator">**</span> <span class="token punctuation">((</span>opponent <span class="token operator">-</span> self<span class="token punctuation">)</span> <span class="token operator">/</span> <span class="token number">400</span><span class="token punctuation">));</span>
   <span class="token keyword">const</span> <span class="token function-variable function">newRating</span> <span class="token operator">=</span> <span class="token punctuation">(</span>rating<span class="token punctuation">,</span> i<span class="token punctuation">)</span> <span class="token operator">=></span>
@@ -593,7 +571,7 @@ document<span class="token punctuation">.</span>body<span class="token punctuati
 <span class="token comment">// 4 player FFA, all same rank</span>
 <span class="token function">elo</span><span class="token punctuation">([</span><span class="token number">1200</span><span class="token punctuation">,</span> <span class="token number">1200</span><span class="token punctuation">,</span> <span class="token number">1200</span><span class="token punctuation">,</span> <span class="token number">1200</span><span class="token punctuation">]).</span><span class="token function">map</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span>round<span class="token punctuation">);</span> <span class="token comment">// [1246, 1215, 1185, 1154]</span>
 <span class="token comment">/*
-For teams, each rating can adjusted based on own team's average rating vs. 
+For teams, each rating can adjusted based on own team's average rating vs.
 average rating of opposing team, with the score being added to their
 own individual rating by supplying it as the third argument.
 */</span>
@@ -604,51 +582,18 @@ own individual rating by supplying it as the third argument.
       })()
     :</span> n <span class="token operator">&lt;=</span> <span class="token number">1</span> <span class="token operator">?</span> <span class="token number">1</span> <span class="token punctuation">:</span> n <span class="token operator">*</span> <span class="token function">factorial</span><span class="token punctuation">(</span>n <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">factorial</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">);</span> <span class="token comment">// 720</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="factors" class="section double-padded">factors</h3><div class="section double-padded"><p>Returns the array of factors of the given <code>num</code>. If the second argument is set to <code>true</code> returns only the prime factors of <code>num</code>. If <code>num</code> is <code>1</code> or <code>0</code> returns an empty array. If <code>num</code> is less than <code>0</code> returns all the factors of <code>-int</code> together with their additive inverses.</p><p>Use <code>Array.from()</code>, <code>Array.map()</code> and <code>Array.filter()</code> to find all the factors of <code>num</code>. If given <code>num</code> is negative, use <code>Array.reduce()</code> to add the additive inverses to the array. Return all results if <code>primes</code> is <code>false</code>, else determine and return only the prime factors using <code>isPrime</code> and <code>Array.filter()</code>. Omit the second argument, <code>primes</code>, to return prime and non-prime factors by default.</p><p><strong>Note</strong>:- <em>Negative numbers are not considered prime.</em></p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">factors</span> <span class="token operator">=</span> <span class="token punctuation">(</span>num<span class="token punctuation">,</span> primes <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
-  <span class="token keyword">const</span> <span class="token function-variable function">isPrime</span> <span class="token operator">=</span> num <span class="token operator">=></span> <span class="token punctuation">{</span>
-    <span class="token keyword">const</span> boundary <span class="token operator">=</span> Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">sqrt</span><span class="token punctuation">(</span>num<span class="token punctuation">));</span>
-    <span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">var</span> i <span class="token operator">=</span> <span class="token number">2</span><span class="token punctuation">;</span> i <span class="token operator">&lt;=</span> boundary<span class="token punctuation">;</span> i<span class="token operator">++</span><span class="token punctuation">)</span> <span class="token keyword">if</span> <span class="token punctuation">(</span>num <span class="token operator">%</span> i <span class="token operator">===</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
-    <span class="token keyword">return</span> num <span class="token operator">>=</span> <span class="token number">2</span><span class="token punctuation">;
-  };</span>
-  <span class="token keyword">const</span> isNeg <span class="token operator">=</span> num <span class="token operator">&lt;</span> <span class="token number">0</span><span class="token punctuation">;</span>
-  num <span class="token operator">=</span> isNeg <span class="token operator">? -</span>num <span class="token punctuation">:</span> num<span class="token punctuation">;</span>
-  <span class="token keyword">let</span> array <span class="token operator">=</span> Array<span class="token punctuation">.</span><span class="token keyword">from</span><span class="token punctuation">({</span> length<span class="token punctuation">:</span> num <span class="token operator">-</span> <span class="token number">1</span> <span class="token punctuation">})
-    .</span><span class="token function">map</span><span class="token punctuation">((</span>val<span class="token punctuation">,</span> i<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">(</span>num <span class="token operator">%</span> <span class="token punctuation">(</span>i <span class="token operator">+</span> <span class="token number">2</span><span class="token punctuation">)</span> <span class="token operator">===</span> <span class="token number">0</span> <span class="token operator">?</span> i <span class="token operator">+</span> <span class="token number">2</span> <span class="token punctuation">:</span> <span class="token boolean">false</span><span class="token punctuation">))
-    .</span><span class="token function">filter</span><span class="token punctuation">(</span>val <span class="token operator">=></span> val<span class="token punctuation">);</span>
-  <span class="token keyword">if</span> <span class="token punctuation">(</span>isNeg<span class="token punctuation">)</span>
-    array <span class="token operator">=</span> array<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">((</span>acc<span class="token punctuation">,</span> val<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
-      acc<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span>val<span class="token punctuation">);</span>
-      acc<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span><span class="token operator">-</span>val<span class="token punctuation">);</span>
-      <span class="token keyword">return</span> acc<span class="token punctuation">;
-    }, []);</span>
-  <span class="token keyword">return</span> primes <span class="token operator">?</span> array<span class="token punctuation">.</span><span class="token function">filter</span><span class="token punctuation">(</span>isPrime<span class="token punctuation">) :</span> array<span class="token punctuation">;
-};</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">factors</span><span class="token punctuation">(</span><span class="token number">12</span><span class="token punctuation">);</span> <span class="token comment">// [2,3,4,6,12]</span>
-<span class="token function">factors</span><span class="token punctuation">(</span><span class="token number">12</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">);</span> <span class="token comment">// [2,3]</span>
-<span class="token function">factors</span><span class="token punctuation">(</span><span class="token operator">-</span><span class="token number">12</span><span class="token punctuation">);</span> <span class="token comment">// [2, -2, 3, -3, 4, -4, 6, -6, 12, -12]</span>
-<span class="token function">factors</span><span class="token punctuation">(</span><span class="token operator">-</span><span class="token number">12</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">);</span> <span class="token comment">// [2,3]</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="fibonacci" class="section double-padded">fibonacci</h3><div class="section double-padded"><p>Generates an array, containing the Fibonacci sequence, up until the nth term.</p><p>Create an empty array of the specific length, initializing the first two values (<code>0</code> and <code>1</code>). Use <code>Array.reduce()</code> to add values into the array, using the sum of the last two values, except for the first two.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">fibonacci</span> <span class="token operator">=</span> n <span class="token operator">=></span>
   Array<span class="token punctuation">.</span><span class="token keyword">from</span><span class="token punctuation">({</span> length<span class="token punctuation">:</span> n <span class="token punctuation">}).</span><span class="token function">reduce</span><span class="token punctuation">(
     (</span>acc<span class="token punctuation">,</span> val<span class="token punctuation">,</span> i<span class="token punctuation">)</span> <span class="token operator">=></span> acc<span class="token punctuation">.</span><span class="token function">concat</span><span class="token punctuation">(</span>i <span class="token operator">></span> <span class="token number">1</span> <span class="token operator">?</span> acc<span class="token punctuation">[</span>i <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">]</span> <span class="token operator">+</span> acc<span class="token punctuation">[</span>i <span class="token operator">-</span> <span class="token number">2</span><span class="token punctuation">] :</span> i<span class="token punctuation">),
     []
   );</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">fibonacci</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">);</span> <span class="token comment">// [0, 1, 1, 2, 3, 5]</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="fibonaccicountuntilnum" class="section double-padded">fibonacciCountUntilNum</h3><div class="section double-padded"><p>Returns the number of fibonnacci numbers up to <code>num</code>(<code>0</code> and <code>num</code> inclusive).</p><p>Use a mathematical formula to calculate the number of fibonacci numbers until <code>num</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">fibonacciCountUntilNum</span> <span class="token operator">=</span> num <span class="token operator">=></span>
-  Math<span class="token punctuation">.</span><span class="token function">ceil</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>num <span class="token operator">*</span> Math<span class="token punctuation">.</span><span class="token function">sqrt</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">1</span> <span class="token operator">/</span> <span class="token number">2</span><span class="token punctuation">)</span> <span class="token operator">/</span> Math<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">((</span>Math<span class="token punctuation">.</span><span class="token function">sqrt</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">/</span> <span class="token number">2</span><span class="token punctuation">));</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">fibonacciCountUntilNum</span><span class="token punctuation">(</span><span class="token number">10</span><span class="token punctuation">);</span> <span class="token comment">// 7</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="fibonacciuntilnum" class="section double-padded">fibonacciUntilNum</h3><div class="section double-padded"><p>Generates an array, containing the Fibonacci sequence, up until the nth term.</p><p>Create an empty array of the specific length, initializing the first two values (<code>0</code> and <code>1</code>). Use <code>Array.reduce()</code> to add values into the array, using the sum of the last two values, except for the first two. Uses a mathematical formula to calculate the length of the array required.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">fibonacciUntilNum</span> <span class="token operator">=</span> num <span class="token operator">=></span> <span class="token punctuation">{</span>
-  <span class="token keyword">let</span> n <span class="token operator">=</span> Math<span class="token punctuation">.</span><span class="token function">ceil</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>num <span class="token operator">*</span> Math<span class="token punctuation">.</span><span class="token function">sqrt</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">1</span> <span class="token operator">/</span> <span class="token number">2</span><span class="token punctuation">)</span> <span class="token operator">/</span> Math<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">((</span>Math<span class="token punctuation">.</span><span class="token function">sqrt</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">/</span> <span class="token number">2</span><span class="token punctuation">));</span>
-  <span class="token keyword">return</span> Array<span class="token punctuation">.</span><span class="token keyword">from</span><span class="token punctuation">({</span> length<span class="token punctuation">:</span> n <span class="token punctuation">}).</span><span class="token function">reduce</span><span class="token punctuation">(
-    (</span>acc<span class="token punctuation">,</span> val<span class="token punctuation">,</span> i<span class="token punctuation">)</span> <span class="token operator">=></span> acc<span class="token punctuation">.</span><span class="token function">concat</span><span class="token punctuation">(</span>i <span class="token operator">></span> <span class="token number">1</span> <span class="token operator">?</span> acc<span class="token punctuation">[</span>i <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">]</span> <span class="token operator">+</span> acc<span class="token punctuation">[</span>i <span class="token operator">-</span> <span class="token number">2</span><span class="token punctuation">] :</span> i<span class="token punctuation">),
-    []
-  );
-};</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">fibonacciUntilNum</span><span class="token punctuation">(</span><span class="token number">10</span><span class="token punctuation">);</span> <span class="token comment">// [ 0, 1, 1, 2, 3, 5, 8 ]</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="gcd" class="section double-padded">gcd</h3><div class="section double-padded"><p>Calculates the greatest common divisor between two or more numbers/arrays.</p><p>The inner <code>_gcd</code> function uses recursion. Base case is when <code>y</code> equals <code>0</code>. In this case, return <code>x</code>. Otherwise, return the GCD of <code>y</code> and the remainder of the division <code>x/y</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">gcd</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">const</span> <span class="token function-variable function">_gcd</span> <span class="token operator">=</span> <span class="token punctuation">(</span>x<span class="token punctuation">,</span> y<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token operator">!</span>y <span class="token operator">?</span> x <span class="token punctuation">:</span> <span class="token function">gcd</span><span class="token punctuation">(</span>y<span class="token punctuation">,</span> x <span class="token operator">%</span> y<span class="token punctuation">));</span>
-  <span class="token keyword">return</span> <span class="token punctuation">[].</span><span class="token function">concat</span><span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">).</span><span class="token function">reduce</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token function">_gcd</span><span class="token punctuation">(</span>a<span class="token punctuation">,</span> b<span class="token punctuation">));
+  <span class="token keyword">return</span> <span class="token punctuation">[</span><span class="token operator">...</span>arr<span class="token punctuation">].</span><span class="token function">reduce</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token function">_gcd</span><span class="token punctuation">(</span>a<span class="token punctuation">,</span> b<span class="token punctuation">));
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">gcd</span><span class="token punctuation">(</span><span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">36</span><span class="token punctuation">);</span> <span class="token comment">// 4</span>
+<span class="token function">gcd</span><span class="token punctuation">(</span><span class="token operator">...</span><span class="token punctuation">[</span><span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token number">32</span><span class="token punctuation">]);</span> <span class="token comment">// 4</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="geometricprogression" class="section double-padded">geometricProgression</h3><div class="section double-padded"><p>Initializes an array containing the numbers in the specified range where <code>start</code> and <code>end</code> are inclusive and the ratio between two terms is <code>step</code>. Returns an error if <code>step</code> equals <code>1</code>.</p><p>Use <code>Array.from()</code>, <code>Math.log()</code> and <code>Math.floor()</code> to create an array of the desired length, <code>Array.map()</code> to fill with the desired values in a range. Omit the second argument, <code>start</code>, to use a default value of <code>1</code>. Omit the third argument, <code>step</code>, to use a default value of <code>2</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">geometricProgression</span> <span class="token operator">=</span> <span class="token punctuation">(</span>end<span class="token punctuation">,</span> start <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">,</span> step <span class="token operator">=</span> <span class="token number">2</span><span class="token punctuation">)</span> <span class="token operator">=></span>
   Array<span class="token punctuation">.</span><span class="token keyword">from</span><span class="token punctuation">({</span> length<span class="token punctuation">:</span> Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>end <span class="token operator">/</span> start<span class="token punctuation">)</span> <span class="token operator">/</span> Math<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>step<span class="token punctuation">))</span> <span class="token operator">+</span> <span class="token number">1</span> <span class="token punctuation">}).</span><span class="token function">map</span><span class="token punctuation">(
     (</span>v<span class="token punctuation">,</span> i<span class="token punctuation">)</span> <span class="token operator">=></span> start <span class="token operator">*</span> step <span class="token operator">**</span> i
@@ -658,20 +603,6 @@ own individual rating by supplying it as the third argument.
 <span class="token function">geometricProgression</span><span class="token punctuation">(</span><span class="token number">256</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">);</span> <span class="token comment">// [1, 4, 16, 64, 256]</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="hammingdistance" class="section double-padded">hammingDistance</h3><div class="section double-padded"><p>Calculates the Hamming distance between two values.</p><p>Use XOR operator (<code>^</code>) to find the bit difference between the two numbers, convert to a binary string using <code>toString(2)</code>. Count and return the number of <code>1</code>s in the string, using <code>match(/1/g)</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">hammingDistance</span> <span class="token operator">=</span> <span class="token punctuation">(</span>num1<span class="token punctuation">,</span> num2<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">((</span>num1 <span class="token operator">^</span> num2<span class="token punctuation">).</span><span class="token function">toString</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">).</span><span class="token function">match</span><span class="token punctuation">(</span><span class="token regex">/1/g</span><span class="token punctuation">)</span> <span class="token operator">||</span> <span class="token string">''</span><span class="token punctuation">).</span>length<span class="token punctuation">;</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">hammingDistance</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">);</span> <span class="token comment">// 1</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="howmanytimes" class="section double-padded">howManyTimes</h3><div class="section double-padded"><p>Returns the number of times <code>num</code> can be divided by <code>divisor</code> (integer or fractional) without getting a fractional answer. Works for both negative and positive integers.</p><p>If <code>divisor</code> is <code>-1</code> or <code>1</code> return <code>Infinity</code>. If <code>divisor</code> is <code>-0</code> or <code>0</code> return <code>0</code>. Otherwise, keep dividing <code>num</code> with <code>divisor</code> and incrementing <code>i</code>, while the result is an integer. Return the number of times the loop was executed, <code>i</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">howManyTimes</span> <span class="token operator">=</span> <span class="token punctuation">(</span>num<span class="token punctuation">,</span> divisor<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
-  <span class="token keyword">if</span> <span class="token punctuation">(</span>divisor <span class="token operator">===</span> <span class="token number">1</span> <span class="token operator">||</span> divisor <span class="token operator">=== -</span><span class="token number">1</span><span class="token punctuation">)</span> <span class="token keyword">return</span> <span class="token number">Infinity</span><span class="token punctuation">;</span>
-  <span class="token keyword">if</span> <span class="token punctuation">(</span>divisor <span class="token operator">===</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token keyword">return</span> <span class="token number">0</span><span class="token punctuation">;</span>
-  <span class="token keyword">let</span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span>
-  <span class="token keyword">while</span> <span class="token punctuation">(</span>Number<span class="token punctuation">.</span><span class="token function">isInteger</span><span class="token punctuation">(</span>num <span class="token operator">/</span> divisor<span class="token punctuation">)) {</span>
-    i<span class="token operator">++</span><span class="token punctuation">;</span>
-    num <span class="token operator">=</span> num <span class="token operator">/</span> divisor<span class="token punctuation">;
-  }</span>
-  <span class="token keyword">return</span> i<span class="token punctuation">;
-};</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">howManyTimes</span><span class="token punctuation">(</span><span class="token number">100</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">);</span> <span class="token comment">// 2</span>
-<span class="token function">howManyTimes</span><span class="token punctuation">(</span><span class="token number">100</span><span class="token punctuation">,</span> <span class="token number">2.5</span><span class="token punctuation">);</span> <span class="token comment">// 2</span>
-<span class="token function">howManyTimes</span><span class="token punctuation">(</span><span class="token number">100</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">);</span> <span class="token comment">// 0</span>
-<span class="token function">howManyTimes</span><span class="token punctuation">(</span><span class="token number">100</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">);</span> <span class="token comment">// Infinity</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="inrange" class="section double-padded">inRange</h3><div class="section double-padded"><p>Checks if the given number falls within the given range.</p><p>Use arithmetic comparison to check if the given number is in the specified range. If the second parameter, <code>end</code>, is not specified, the range is considered to be from <code>0</code> to <code>start</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">inRange</span> <span class="token operator">=</span> <span class="token punctuation">(</span>n<span class="token punctuation">,</span> start<span class="token punctuation">,</span> end <span class="token operator">=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">if</span> <span class="token punctuation">(</span>end <span class="token operator">&amp;&amp;</span> start <span class="token operator">></span> end<span class="token punctuation">)</span> end <span class="token operator">=</span> <span class="token punctuation">[</span>start<span class="token punctuation">, (</span>start <span class="token operator">=</span> end<span class="token punctuation">)][</span><span class="token number">0</span><span class="token punctuation">];</span>
   <span class="token keyword">return</span> end <span class="token operator">==</span> <span class="token keyword">null</span> <span class="token operator">?</span> n <span class="token operator">>=</span> <span class="token number">0</span> <span class="token operator">&amp;&amp;</span> n <span class="token operator">&lt;</span> start <span class="token punctuation">:</span> n <span class="token operator">>=</span> start <span class="token operator">&amp;&amp;</span> n <span class="token operator">&lt;</span> end<span class="token punctuation">;
@@ -680,12 +611,6 @@ own individual rating by supplying it as the third argument.
 <span class="token function">inRange</span><span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
 <span class="token function">inRange</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
 <span class="token function">inrange</span><span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="isarmstrongnumber" class="section double-padded">isArmstrongNumber</h3><div class="section double-padded"><p>Checks if the given number is an Armstrong number or not.</p><p>Convert the given number into an array of digits. Use the exponent operator (<code>**</code>) to get the appropriate power for each digit and sum them up. If the sum is equal to the number itself, return <code>true</code> otherwise <code>false</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">isArmstrongNumber</span> <span class="token operator">=</span> digits <span class="token operator">=></span>
-  <span class="token punctuation">(</span>arr <span class="token operator">=></span> arr<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> d<span class="token punctuation">)</span> <span class="token operator">=></span> a <span class="token operator">+</span> <span class="token function">parseInt</span><span class="token punctuation">(</span>d<span class="token punctuation">)</span> <span class="token operator">**</span> arr<span class="token punctuation">.</span>length<span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">==</span> digits<span class="token punctuation">)(
-    (</span>digits <span class="token operator">+</span> <span class="token string">''</span><span class="token punctuation">).</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">)
-  );</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">isArmstrongNumber</span><span class="token punctuation">(</span><span class="token number">1634</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
-<span class="token function">isArmstrongNumber</span><span class="token punctuation">(</span><span class="token number">56</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="isdivisible" class="section double-padded">isDivisible</h3><div class="section double-padded"><p>Checks if the first numeric argument is divisible by the second one.</p><p>Use the modulo operator (<code>%</code>) to check if the remainder is equal to <code>0</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">isDivisible</span> <span class="token operator">=</span> <span class="token punctuation">(</span>dividend<span class="token punctuation">,</span> divisor<span class="token punctuation">)</span> <span class="token operator">=></span> dividend <span class="token operator">%</span> divisor <span class="token operator">===</span> <span class="token number">0</span><span class="token punctuation">;</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">isDivisible</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="iseven" class="section double-padded">isEven</h3><div class="section double-padded"><p>Returns <code>true</code> if the given number is even, <code>false</code> otherwise.</p><p>Checks whether a number is odd or even using the modulo (<code>%</code>) operator. Returns <code>true</code> if the number is even, <code>false</code> if the number is odd.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">isEven</span> <span class="token operator">=</span> num <span class="token operator">=></span> num <span class="token operator">%</span> <span class="token number">2</span> <span class="token operator">===</span> <span class="token number">0</span><span class="token punctuation">;</span>
@@ -696,13 +621,13 @@ own individual rating by supplying it as the third argument.
   <span class="token keyword">return</span> num <span class="token operator">>=</span> <span class="token number">2</span><span class="token punctuation">;
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">isPrime</span><span class="token punctuation">(</span><span class="token number">11</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="lcm" class="section double-padded">lcm</h3><div class="section double-padded"><p>Returns the least common multiple of two or more numbers/arrays.</p><p>Use the greatest common divisor (GCD) formula and <code>Math.abs()</code> to determine the least common multiple. The GCD formula uses recursion.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">lcm</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="lcm" class="section double-padded">lcm</h3><div class="section double-padded"><p>Returns the least common multiple of two or more numbers.</p><p>Use the greatest common divisor (GCD) formula and <code>Math.abs()</code> to determine the least common multiple. The GCD formula uses recursion.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">lcm</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">const</span> <span class="token function-variable function">gcd</span> <span class="token operator">=</span> <span class="token punctuation">(</span>x<span class="token punctuation">,</span> y<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token operator">!</span>y <span class="token operator">?</span> x <span class="token punctuation">:</span> <span class="token function">gcd</span><span class="token punctuation">(</span>y<span class="token punctuation">,</span> x <span class="token operator">%</span> y<span class="token punctuation">));</span>
   <span class="token keyword">const</span> <span class="token function-variable function">_lcm</span> <span class="token operator">=</span> <span class="token punctuation">(</span>x<span class="token punctuation">,</span> y<span class="token punctuation">)</span> <span class="token operator">=></span> x <span class="token operator">*</span> y <span class="token operator">/</span> <span class="token function">gcd</span><span class="token punctuation">(</span>x<span class="token punctuation">,</span> y<span class="token punctuation">);</span>
-  <span class="token keyword">return</span> <span class="token punctuation">[].</span><span class="token function">concat</span><span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">).</span><span class="token function">reduce</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token function">_lcm</span><span class="token punctuation">(</span>a<span class="token punctuation">,</span> b<span class="token punctuation">));
+  <span class="token keyword">return</span> <span class="token punctuation">[</span><span class="token operator">...</span>arr<span class="token punctuation">].</span><span class="token function">reduce</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token function">_lcm</span><span class="token punctuation">(</span>a<span class="token punctuation">,</span> b<span class="token punctuation">));
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">lcm</span><span class="token punctuation">(</span><span class="token number">12</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">);</span> <span class="token comment">// 84</span>
-<span class="token function">lcm</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">],</span> <span class="token number">5</span><span class="token punctuation">);</span> <span class="token comment">// 60</span>
+<span class="token function">lcm</span><span class="token punctuation">(</span><span class="token operator">...</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">]);</span> <span class="token comment">// 60</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="luhncheck" class="section double-padded">luhnCheck</h3><div class="section double-padded"><p>Implementation of the <a href="https://en.wikipedia.org/wiki/Luhn_algorithm">Luhn Algorithm</a> used to validate a variety of identification numbers, such as credit card numbers, IMEI numbers, National Provider Identifier numbers etc.</p><p>Use <code>String.split('')</code>, <code>Array.reverse()</code> and <code>Array.map()</code> in combination with <code>parseInt()</code> to obtain an array of digits. Use <code>Array.splice(0,1)</code> to obtain the last digit. Use <code>Array.reduce()</code> to implement the Luhn Algorithm. Return <code>true</code> if <code>sum</code> is divisible by <code>10</code>, <code>false</code> otherwise.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">luhnCheck</span> <span class="token operator">=</span> num <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">let</span> arr <span class="token operator">=</span> <span class="token punctuation">(</span>num <span class="token operator">+</span> <span class="token string">''</span><span class="token punctuation">)
     .</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">)
@@ -741,36 +666,15 @@ own individual rating by supplying it as the third argument.
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">randomNumberInRange</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">);</span> <span class="token comment">// 6.0211363285087005</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="round" class="section double-padded">round</h3><div class="section double-padded"><p>Rounds a number to a specified amount of digits.</p><p>Use <code>Math.round()</code> and template literals to round the number to the specified number of digits. Omit the second argument, <code>decimals</code> to round to an integer.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">round</span> <span class="token operator">=</span> <span class="token punctuation">(</span>n<span class="token punctuation">,</span> decimals <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token function">Number</span><span class="token punctuation">(</span><span class="token template-string"><span class="token string">`${Math.round(`</span></span>$<span class="token punctuation">{</span>n<span class="token punctuation">}</span>e$<span class="token punctuation">{</span>decimals<span class="token punctuation">}</span><span class="token template-string"><span class="token string">`)}e-</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>decimals<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">`</span></span><span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">round</span><span class="token punctuation">(</span><span class="token number">1.005</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">);</span> <span class="token comment">// 1.01</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="solverpn" class="section double-padded">solveRPN</h3><div class="section double-padded"><p>Solves the given mathematical expression in <a href="https://en.wikipedia.org/wiki/Reverse_Polish_notation">reverse polish notation</a>. Throws appropriate errors if there are unrecognized symbols or the expression is wrong. The valid operators are :- <code>+</code>,<code>-</code>,<code>*</code>,<code>/</code>,<code>^</code>,<code>**</code> (<code>^</code>&amp;<code>**</code> are the exponential symbols and are same). This snippet does not supports any unary operators.</p><p>Use a dictionary, <code>OPERATORS</code> to specify each operator's matching mathematical operation. Use <code>String.replace()</code> with a regular expression to replace <code>^</code> with <code>**</code>, <code>String.split()</code> to tokenize the string and <code>Array.filter()</code> to remove empty tokens. Use <code>Array.forEach()</code> to parse each <code>symbol</code>, evaluate it as a numeric value or operator and solve the mathematical expression. Numeric values are converted to floating point numbers and pushed to a <code>stack</code>, while operators are evaluated using the <code>OPERATORS</code> dictionary and pop elements from the <code>stack</code> to apply operations.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">solveRPN</span> <span class="token operator">=</span> rpn <span class="token operator">=></span> <span class="token punctuation">{</span>
-  <span class="token keyword">const</span> OPERATORS <span class="token operator">=</span> <span class="token punctuation">{</span>
-    <span class="token string">'*'</span><span class="token punctuation">: (</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> a <span class="token operator">*</span> b<span class="token punctuation">,</span>
-    <span class="token string">'+'</span><span class="token punctuation">: (</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> a <span class="token operator">+</span> b<span class="token punctuation">,</span>
-    <span class="token string">'-'</span><span class="token punctuation">: (</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> a <span class="token operator">-</span> b<span class="token punctuation">,</span>
-    <span class="token string">'/'</span><span class="token punctuation">: (</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> a <span class="token operator">/</span> b<span class="token punctuation">,</span>
-    <span class="token string">'**'</span><span class="token punctuation">: (</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> a <span class="token operator">**</span> b
-  <span class="token punctuation">};</span>
-  <span class="token keyword">const</span> <span class="token punctuation">[</span>stack<span class="token punctuation">,</span> solve<span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[
-    [],</span>
-    rpn
-      <span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex">/\^/g</span><span class="token punctuation">,</span> <span class="token string">'**'</span><span class="token punctuation">)
-      .</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token regex">/\s+/g</span><span class="token punctuation">)
-      .</span><span class="token function">filter</span><span class="token punctuation">(</span>el <span class="token operator">=> !</span><span class="token regex">/\s+/</span><span class="token punctuation">.</span><span class="token function">test</span><span class="token punctuation">(</span>el<span class="token punctuation">)</span> <span class="token operator">&amp;&amp;</span> el <span class="token operator">!==</span> <span class="token string">''</span><span class="token punctuation">)
-  ];</span>
-  solve<span class="token punctuation">.</span><span class="token function">forEach</span><span class="token punctuation">(</span>symbol <span class="token operator">=></span> <span class="token punctuation">{</span>
-    <span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">!</span><span class="token function">isNaN</span><span class="token punctuation">(</span><span class="token function">parseFloat</span><span class="token punctuation">(</span>symbol<span class="token punctuation">))</span> <span class="token operator">&amp;&amp;</span> <span class="token function">isFinite</span><span class="token punctuation">(</span>symbol<span class="token punctuation">)) {</span>
-      stack<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span>symbol<span class="token punctuation">);
-    }</span> <span class="token keyword">else if</span> <span class="token punctuation">(</span>Object<span class="token punctuation">.</span><span class="token function">keys</span><span class="token punctuation">(</span>OPERATORS<span class="token punctuation">).</span><span class="token function">includes</span><span class="token punctuation">(</span>symbol<span class="token punctuation">)) {</span>
-      <span class="token keyword">const</span> <span class="token punctuation">[</span>a<span class="token punctuation">,</span> b<span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span>stack<span class="token punctuation">.</span><span class="token function">pop</span><span class="token punctuation">(),</span> stack<span class="token punctuation">.</span><span class="token function">pop</span><span class="token punctuation">()];</span>
-      stack<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span>OPERATORS<span class="token punctuation">[</span>symbol<span class="token punctuation">](</span><span class="token function">parseFloat</span><span class="token punctuation">(</span>b<span class="token punctuation">),</span> <span class="token function">parseFloat</span><span class="token punctuation">(</span>a<span class="token punctuation">)));
-    }</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
-      <span class="token keyword">throw</span> <span class="token template-string"><span class="token string">`</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>symbol<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string"> is not a recognized symbol`</span></span><span class="token punctuation">;
-    }
-  });</span>
-  <span class="token keyword">if</span> <span class="token punctuation">(</span>stack<span class="token punctuation">.</span>length <span class="token operator">===</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token keyword">return</span> stack<span class="token punctuation">.</span><span class="token function">pop</span><span class="token punctuation">();</span>
-  <span class="token keyword">else throw</span> <span class="token template-string"><span class="token string">`</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>rpn<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string"> is not a proper RPN. Please check it and try again`</span></span><span class="token punctuation">;
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="sdbm" class="section double-padded">sbdm</h3><div class="section double-padded"><p>Hashes the input string into a whole number.</p><p>Use <code>String.split('')</code> and <code>Array.reduce()</code> to create a hash of the input string, utilizing bit shifting.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">sdbm</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token punctuation">{</span>
+  <span class="token keyword">let</span> arr <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">);</span>
+  <span class="token keyword">return</span> arr<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">(
+    (</span>hashCode<span class="token punctuation">,</span> currentVal<span class="token punctuation">)</span> <span class="token operator">=></span>
+      <span class="token punctuation">(</span>hashCode <span class="token operator">=</span> currentVal<span class="token punctuation">.</span><span class="token function">charCodeAt</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token punctuation">(</span>hashCode <span class="token operator">&lt;&lt;</span> <span class="token number">6</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token punctuation">(</span>hashCode <span class="token operator">&lt;&lt;</span> <span class="token number">16</span><span class="token punctuation">)</span> <span class="token operator">-</span> hashCode<span class="token punctuation">),</span>
+    <span class="token number">0</span>
+  <span class="token punctuation">);
 };</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">solveRPN</span><span class="token punctuation">(</span><span class="token string">'15 7 1 1 + - / 3 * 2 1 1 + + -'</span><span class="token punctuation">);</span> <span class="token comment">// 5</span>
-<span class="token function">solveRPN</span><span class="token punctuation">(</span><span class="token string">'2 3 ^'</span><span class="token punctuation">);</span> <span class="token comment">// 8</span>
+</pre><label class="collapse">Show examples</label><pre class="language-js">console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token function">sdbm</span><span class="token punctuation">(</span><span class="token string">'name'</span><span class="token punctuation">));</span> <span class="token comment">// -3521204949</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="standarddeviation" class="section double-padded">standardDeviation</h3><div class="section double-padded"><p>Returns the standard deviation of an array of numbers.</p><p>Use <code>Array.reduce()</code> to calculate the mean, variance and the sum of the variance of the values, the variance of the values, then determine the standard deviation. You can omit the second argument to get the sample standard deviation or set it to <code>true</code> to get the population standard deviation.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">standardDeviation</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> usePopulation <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">const</span> mean <span class="token operator">=</span> arr<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">((</span>acc<span class="token punctuation">,</span> val<span class="token punctuation">)</span> <span class="token operator">=></span> acc <span class="token operator">+</span> val<span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">/</span> arr<span class="token punctuation">.</span>length<span class="token punctuation">;</span>
   <span class="token keyword">return</span> Math<span class="token punctuation">.</span><span class="token function">sqrt</span><span class="token punctuation">(</span>
@@ -780,8 +684,8 @@ own individual rating by supplying it as the third argument.
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">standardDeviation</span><span class="token punctuation">([</span><span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">38</span><span class="token punctuation">,</span> <span class="token number">23</span><span class="token punctuation">,</span> <span class="token number">38</span><span class="token punctuation">,</span> <span class="token number">23</span><span class="token punctuation">,</span> <span class="token number">21</span><span class="token punctuation">]);</span> <span class="token comment">// 13.284434142114991 (sample)</span>
 <span class="token function">standardDeviation</span><span class="token punctuation">([</span><span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">38</span><span class="token punctuation">,</span> <span class="token number">23</span><span class="token punctuation">,</span> <span class="token number">38</span><span class="token punctuation">,</span> <span class="token number">23</span><span class="token punctuation">,</span> <span class="token number">21</span><span class="token punctuation">],</span> <span class="token boolean">true</span><span class="token punctuation">);</span> <span class="token comment">// 12.29899614287479 (population)</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="sum" class="section double-padded">sum</h3><div class="section double-padded"><p>Returns the sum of two or more numbers/arrays.</p><p>Use <code>Array.reduce()</code> to add each value to an accumulator, initialized with a value of <code>0</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">sum</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">[].</span><span class="token function">concat</span><span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">).</span><span class="token function">reduce</span><span class="token punctuation">((</span>acc<span class="token punctuation">,</span> val<span class="token punctuation">)</span> <span class="token operator">=></span> acc <span class="token operator">+</span> val<span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">);</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">sum</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">]);</span> <span class="token comment">// 10</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="sum" class="section double-padded">sum</h3><div class="section double-padded"><p>Returns the sum of two or more numbers/arrays.</p><p>Use <code>Array.reduce()</code> to add each value to an accumulator, initialized with a value of <code>0</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">sum</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>arr<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">[</span><span class="token operator">...</span>arr<span class="token punctuation">].</span><span class="token function">reduce</span><span class="token punctuation">((</span>acc<span class="token punctuation">,</span> val<span class="token punctuation">)</span> <span class="token operator">=></span> acc <span class="token operator">+</span> val<span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">);</span>
+</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">sum</span><span class="token punctuation">(</span><span class="token operator">...</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">]);</span> <span class="token comment">// 10</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="sumpower" class="section double-padded">sumPower</h3><div class="section double-padded"><p>Returns the sum of the powers of all the numbers from <code>start</code> to <code>end</code> (both inclusive).</p><p>Use <code>Array.fill()</code> to create an array of all the numbers in the target range, <code>Array.map()</code> and the exponent operator (<code>**</code>) to raise them to <code>power</code> and <code>Array.reduce()</code> to add them together. Omit the second argument, <code>power</code>, to use a default power of <code>2</code>. Omit the third argument, <code>start</code>, to use a default starting value of <code>1</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">sumPower</span> <span class="token operator">=</span> <span class="token punctuation">(</span>end<span class="token punctuation">,</span> power <span class="token operator">=</span> <span class="token number">2</span><span class="token punctuation">,</span> start <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">=></span>
   <span class="token function">Array</span><span class="token punctuation">(</span>end <span class="token operator">+</span> <span class="token number">1</span> <span class="token operator">-</span> start<span class="token punctuation">)
     .</span><span class="token function">fill</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)
@@ -825,7 +729,7 @@ console<span class="token punctuation">.</span><span class="token function">log<
     <span class="token punctuation">(</span>c <span class="token operator">^</span> <span class="token punctuation">(</span>crypto<span class="token punctuation">.</span><span class="token function">randomBytes</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">)[</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">&amp;</span> <span class="token punctuation">(</span><span class="token number">15</span> <span class="token operator">>></span> <span class="token punctuation">(</span>c <span class="token operator">/</span> <span class="token number">4</span><span class="token punctuation">)))).</span><span class="token function">toString</span><span class="token punctuation">(</span><span class="token number">16</span><span class="token punctuation">)
   );</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">UUIDGeneratorNode</span><span class="token punctuation">();</span> <span class="token comment">// '79c7c136-60ee-40a2-beb2-856f1feabefc'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><h2 style="text-align:center">Object</h2><div class="card fluid"><h3 id="cleanobj" class="section double-padded">cleanObj</h3><div class="section double-padded"><p>Removes any properties except the ones specified from a JSON object.</p><p>Use <code>Object.keys()</code> method to loop over given JSON object and deleting keys that are not <code>include</code>d in given array. Also if you give it a special key (<code>childIndicator</code>) it will search deeply inside it to apply function to inner objects too.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">cleanObj</span> <span class="token operator">=</span> <span class="token punctuation">(</span>obj<span class="token punctuation">,</span> keysToKeep <span class="token operator">=</span> <span class="token punctuation">[],</span> childIndicator<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><h2 style="text-align:center">Object</h2><div class="card fluid"><h3 id="cleanobj" class="section double-padded">cleanObj</h3><div class="section double-padded"><p>Removes any properties except the ones specified from a JSON object.</p><p>Use <code>Object.keys()</code> method to loop over given JSON object and deleting keys that are not included in given array. If you pass a special key,<code>childIndicator</code>, it will search deeply apply the function to inner objects, too.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">cleanObj</span> <span class="token operator">=</span> <span class="token punctuation">(</span>obj<span class="token punctuation">,</span> keysToKeep <span class="token operator">=</span> <span class="token punctuation">[],</span> childIndicator<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
   Object<span class="token punctuation">.</span><span class="token function">keys</span><span class="token punctuation">(</span>obj<span class="token punctuation">).</span><span class="token function">forEach</span><span class="token punctuation">(</span>key <span class="token operator">=></span> <span class="token punctuation">{</span>
     <span class="token keyword">if</span> <span class="token punctuation">(</span>key <span class="token operator">===</span> childIndicator<span class="token punctuation">) {</span>
       <span class="token function">cleanObj</span><span class="token punctuation">(</span>obj<span class="token punctuation">[</span>key<span class="token punctuation">],</span> keysToKeep<span class="token punctuation">,</span> childIndicator<span class="token punctuation">);
@@ -854,7 +758,7 @@ console<span class="token punctuation">.</span><span class="token function">log<
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">objectFromPairs</span><span class="token punctuation">([[</span><span class="token string">'a'</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">], [</span><span class="token string">'b'</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">]]);</span> <span class="token comment">// {a: 1, b: 2}</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="objecttopairs" class="section double-padded">objectToPairs</h3><div class="section double-padded"><p>Creates an array of key-value pair arrays from an object.</p><p>Use <code>Object.keys()</code> and <code>Array.map()</code> to iterate over the object's keys and produce an array with key-value pairs.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">objectToPairs</span> <span class="token operator">=</span> obj <span class="token operator">=></span> Object<span class="token punctuation">.</span><span class="token function">keys</span><span class="token punctuation">(</span>obj<span class="token punctuation">).</span><span class="token function">map</span><span class="token punctuation">(</span>k <span class="token operator">=></span> <span class="token punctuation">[</span>k<span class="token punctuation">,</span> obj<span class="token punctuation">[</span>k<span class="token punctuation">]]);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">objectToPairs</span><span class="token punctuation">({</span> a<span class="token punctuation">:</span> <span class="token number">1</span><span class="token punctuation">,</span> b<span class="token punctuation">:</span> <span class="token number">2</span> <span class="token punctuation">});</span> <span class="token comment">// [['a',1],['b',2]])</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="orderby" class="section double-padded">orderBy</h3><div class="section double-padded"><p>Returns a sorted array of objects ordered by properties and orders.</p><p>Uses a custom implementation of sort, that reduces the props array argument with a default value of 0, it uses destructuring to swap the properties position depending on the order passed. If no orders array is passed it sort by 'asc' by default.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">orderBy</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> props<span class="token punctuation">,</span> orders<span class="token punctuation">)</span> <span class="token operator">=></span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="orderby" class="section double-padded">orderBy</h3><div class="section double-padded"><p>Returns a sorted array of objects ordered by properties and orders.</p><p>Uses <code>Array.sort()</code>, <code>Array.reduce()</code> on the <code>props</code> array with a default value of <code>0</code>, use array destructuring to swap the properties position depending on the order passed. If no <code>orders</code> array is passed it sort by <code>'asc'</code> by default.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">orderBy</span> <span class="token operator">=</span> <span class="token punctuation">(</span>arr<span class="token punctuation">,</span> props<span class="token punctuation">,</span> orders<span class="token punctuation">)</span> <span class="token operator">=></span>
   <span class="token punctuation">[</span><span class="token operator">...</span>arr<span class="token punctuation">].</span><span class="token function">sort</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span>
     props<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">((</span>acc<span class="token punctuation">,</span> prop<span class="token punctuation">,</span> i<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
       <span class="token keyword">if</span> <span class="token punctuation">(</span>acc <span class="token operator">===</span> <span class="token number">0</span><span class="token punctuation">) {</span>
@@ -867,19 +771,19 @@ console<span class="token punctuation">.</span><span class="token function">log<
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token keyword">const</span> users <span class="token operator">=</span> <span class="token punctuation">[{</span> name<span class="token punctuation">:</span> <span class="token string">'fred'</span><span class="token punctuation">,</span> age<span class="token punctuation">:</span> <span class="token number">48</span> <span class="token punctuation">}, {</span> name<span class="token punctuation">:</span> <span class="token string">'barney'</span><span class="token punctuation">,</span> age<span class="token punctuation">:</span> <span class="token number">36</span> <span class="token punctuation">}, {</span> name<span class="token punctuation">:</span> <span class="token string">'fred'</span><span class="token punctuation">,</span> age<span class="token punctuation">:</span> <span class="token number">40</span> <span class="token punctuation">}];</span>
 <span class="token function">orderBy</span><span class="token punctuation">(</span>users<span class="token punctuation">, [</span><span class="token string">'name'</span><span class="token punctuation">,</span> <span class="token string">'age'</span><span class="token punctuation">], [</span><span class="token string">'asc'</span><span class="token punctuation">,</span> <span class="token string">'desc'</span><span class="token punctuation">]);</span> <span class="token comment">// [{name: 'barney', age: 36}, {name: 'fred', age: 48}, {name: 'fred', age: 40}]</span>
 <span class="token function">orderBy</span><span class="token punctuation">(</span>users<span class="token punctuation">, [</span><span class="token string">'name'</span><span class="token punctuation">,</span> <span class="token string">'age'</span><span class="token punctuation">]);</span> <span class="token comment">// [{name: 'barney', age: 36}, {name: 'fred', age: 40}, {name: 'fred', age: 48}]</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="select" class="section double-padded">select</h3><div class="section double-padded"><p>Retrieve a property that indicated by the selector from an object.</p><p>If the property does not exists returns <code>undefined</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">select</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token keyword">from</span><span class="token punctuation">,</span> selector<span class="token punctuation">)</span> <span class="token operator">=></span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="select" class="section double-padded">select</h3><div class="section double-padded"><p>Retrieve a property indicated by the selector from an object.</p><p>If the property does not exists returns <code>undefined</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">select</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token keyword">from</span><span class="token punctuation">,</span> selector<span class="token punctuation">)</span> <span class="token operator">=></span>
   selector<span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">'.'</span><span class="token punctuation">).</span><span class="token function">reduce</span><span class="token punctuation">((</span>prev<span class="token punctuation">,</span> cur<span class="token punctuation">)</span> <span class="token operator">=></span> prev <span class="token operator">&amp;&amp;</span> prev<span class="token punctuation">[</span>cur<span class="token punctuation">],</span> <span class="token keyword">from</span><span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token keyword">const</span> obj <span class="token operator">=</span> <span class="token punctuation">{</span> selector<span class="token punctuation">: {</span> to<span class="token punctuation">: {</span> val<span class="token punctuation">:</span> <span class="token string">'val to select'</span> <span class="token punctuation">} } };</span>
 <span class="token function">select</span><span class="token punctuation">(</span>obj<span class="token punctuation">,</span> <span class="token string">'selector.to.val'</span><span class="token punctuation">);</span> <span class="token comment">// 'val to select'</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="shallowclone" class="section double-padded">shallowClone</h3><div class="section double-padded"><p>Creates a shallow clone of an object.</p><p>Use <code>Object.assign()</code> and an empty object (<code>{}</code>) to create a shallow clone of the original.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">shallowClone</span> <span class="token operator">=</span> obj <span class="token operator">=></span> Object<span class="token punctuation">.</span><span class="token function">assign</span><span class="token punctuation">({},</span> obj<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token keyword">const</span> a <span class="token operator">=</span> <span class="token punctuation">{</span> x<span class="token punctuation">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span> y<span class="token punctuation">:</span> <span class="token number">1</span> <span class="token punctuation">};</span>
 <span class="token keyword">const</span> b <span class="token operator">=</span> <span class="token function">shallowClone</span><span class="token punctuation">(</span>a<span class="token punctuation">);</span> <span class="token comment">// a !== b</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="size" class="section double-padded">size</h3><div class="section double-padded"><p>Get size of arrays, objects or strings.</p><p>Get type of <code>value</code> (<code>array</code>, <code>object</code> or <code>string</code>). Use <code>length</code> property for arrays. Use <code>length</code> or <code>size</code> value if available or number of keys for objects. Use <code>size</code> of a <a href="https://developer.mozilla.org/en-US/docs/Web/API/Blob"><code>Blob</code> object</a> created from <code>value</code> for strings.</p><p>Split strings into array of characters with <code>split('')</code> and return its length.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">size</span> <span class="token operator">=</span> value <span class="token operator">=></span>
-  Array<span class="token punctuation">.</span><span class="token function">isArray</span><span class="token punctuation">(</span>value<span class="token punctuation">)</span>
-    <span class="token operator">?</span> value<span class="token punctuation">.</span>length
-    <span class="token punctuation">:</span> value <span class="token operator">&amp;&amp;</span> <span class="token keyword">typeof</span> value <span class="token operator">===</span> <span class="token string">'object'</span>
-      <span class="token operator">?</span> value<span class="token punctuation">.</span>size <span class="token operator">||</span> value<span class="token punctuation">.</span>length <span class="token operator">||</span> Object<span class="token punctuation">.</span><span class="token function">keys</span><span class="token punctuation">(</span>value<span class="token punctuation">).</span>length
-      <span class="token punctuation">:</span> <span class="token keyword">typeof</span> value <span class="token operator">===</span> <span class="token string">'string'</span> <span class="token operator">?</span> <span class="token keyword">new</span> <span class="token class-name">Blob</span><span class="token punctuation">([</span>value<span class="token punctuation">]).</span>size <span class="token punctuation">:</span> <span class="token number">0</span><span class="token punctuation">;</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="size" class="section double-padded">size</h3><div class="section double-padded"><p>Get size of arrays, objects or strings.</p><p>Get type of <code>val</code> (<code>array</code>, <code>object</code> or <code>string</code>). Use <code>length</code> property for arrays. Use <code>length</code> or <code>size</code> value if available or number of keys for objects. Use <code>size</code> of a <a href="https://developer.mozilla.org/en-US/docs/Web/API/Blob"><code>Blob</code> object</a> created from <code>val</code> for strings.</p><p>Split strings into array of characters with <code>split('')</code> and return its length.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">size</span> <span class="token operator">=</span> val <span class="token operator">=></span>
+  Array<span class="token punctuation">.</span><span class="token function">isArray</span><span class="token punctuation">(</span>val<span class="token punctuation">)</span>
+    <span class="token operator">?</span> val<span class="token punctuation">.</span>length
+    <span class="token punctuation">:</span> val <span class="token operator">&amp;&amp;</span> <span class="token keyword">typeof</span> val <span class="token operator">===</span> <span class="token string">'object'</span>
+      <span class="token operator">?</span> val<span class="token punctuation">.</span>size <span class="token operator">||</span> val<span class="token punctuation">.</span>length <span class="token operator">||</span> Object<span class="token punctuation">.</span><span class="token function">keys</span><span class="token punctuation">(</span>val<span class="token punctuation">).</span>length
+      <span class="token punctuation">:</span> <span class="token keyword">typeof</span> val <span class="token operator">===</span> <span class="token string">'string'</span> <span class="token operator">?</span> <span class="token keyword">new</span> <span class="token class-name">Blob</span><span class="token punctuation">([</span>val<span class="token punctuation">]).</span>size <span class="token punctuation">:</span> <span class="token number">0</span><span class="token punctuation">;</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">size</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">]);</span> <span class="token comment">// 5</span>
 <span class="token function">size</span><span class="token punctuation">(</span><span class="token string">'size'</span><span class="token punctuation">);</span> <span class="token comment">// 4</span>
 <span class="token function">size</span><span class="token punctuation">({</span> one<span class="token punctuation">:</span> <span class="token number">1</span><span class="token punctuation">,</span> two<span class="token punctuation">:</span> <span class="token number">2</span><span class="token punctuation">,</span> three<span class="token punctuation">:</span> <span class="token number">3</span> <span class="token punctuation">});</span> <span class="token comment">// 3</span>
@@ -896,19 +800,19 @@ console<span class="token punctuation">.</span><span class="token function">log<
     );
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">anagrams</span><span class="token punctuation">(</span><span class="token string">'abc'</span><span class="token punctuation">);</span> <span class="token comment">// ['abc','acb','bac','bca','cab','cba']</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="bytesize" class="section double-padded">byteSize</h3><div class="section double-padded"><p>Returns the length of string.</p><p>Convert a given string to a <a href="https://developer.mozilla.org/en-US/docs/Web/API/Blob"><code>Blob</code> Object</a> and find its <code>size</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">byteSize</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token keyword">new</span> <span class="token class-name">Blob</span><span class="token punctuation">([</span>str<span class="token punctuation">]).</span>size<span class="token punctuation">;</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="bytesize" class="section double-padded">byteSize</h3><div class="section double-padded"><p>Returns the length of a string in bytes.</p><p>Convert a given string to a <a href="https://developer.mozilla.org/en-US/docs/Web/API/Blob"><code>Blob</code> Object</a> and find its <code>size</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">byteSize</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token keyword">new</span> <span class="token class-name">Blob</span><span class="token punctuation">([</span>str<span class="token punctuation">]).</span>size<span class="token punctuation">;</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">byteSize</span><span class="token punctuation">(</span><span class="token string">'😀'</span><span class="token punctuation">);</span> <span class="token comment">// 4</span>
 <span class="token function">byteSize</span><span class="token punctuation">(</span><span class="token string">'Hello World'</span><span class="token punctuation">);</span> <span class="token comment">// 11</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="capitalize" class="section double-padded">capitalize</h3><div class="section double-padded"><p>Capitalizes the first letter of a string.</p><p>Use destructuring and <code>toUpperCase()</code> to capitalize first letter, <code>...rest</code> to get array of characters after first letter and then <code>Array.join('')</code> to make it a string again. Omit the <code>lowerRest</code> parameter to keep the rest of the string intact, or set it to <code>true</code> to convert to lowercase.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">capitalize</span> <span class="token operator">=</span> <span class="token punctuation">([</span>first<span class="token punctuation">,</span> <span class="token operator">...</span>rest<span class="token punctuation">],</span> lowerRest <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">)</span> <span class="token operator">=></span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="capitalize" class="section double-padded">capitalize</h3><div class="section double-padded"><p>Capitalizes the first letter of a string.</p><p>Use array destructuring and <code>String.toUpperCase()</code> to capitalize first letter, <code>...rest</code> to get array of characters after first letter and then <code>Array.join('')</code> to make it a string again. Omit the <code>lowerRest</code> parameter to keep the rest of the string intact, or set it to <code>true</code> to convert to lowercase.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">capitalize</span> <span class="token operator">=</span> <span class="token punctuation">([</span>first<span class="token punctuation">,</span> <span class="token operator">...</span>rest<span class="token punctuation">],</span> lowerRest <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">)</span> <span class="token operator">=></span>
   first<span class="token punctuation">.</span><span class="token function">toUpperCase</span><span class="token punctuation">()</span> <span class="token operator">+</span> <span class="token punctuation">(</span>lowerRest <span class="token operator">?</span> rest<span class="token punctuation">.</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">).</span><span class="token function">toLowerCase</span><span class="token punctuation">() :</span> rest<span class="token punctuation">.</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">));</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">capitalize</span><span class="token punctuation">(</span><span class="token string">'fooBar'</span><span class="token punctuation">);</span> <span class="token comment">// 'FooBar'</span>
 <span class="token function">capitalize</span><span class="token punctuation">(</span><span class="token string">'fooBar'</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">);</span> <span class="token comment">// 'Foobar'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="capitalizeeveryword" class="section double-padded">capitalizeEveryWord</h3><div class="section double-padded"><p>Capitalizes the first letter of every word in a string.</p><p>Use <code>replace()</code> to match the first character of each word and <code>toUpperCase()</code> to capitalize it.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">capitalizeEveryWord</span> <span class="token operator">=</span> str <span class="token operator">=></span> str<span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex">/\b[a-z]/g</span><span class="token punctuation">,</span> char <span class="token operator">=></span> char<span class="token punctuation">.</span><span class="token function">toUpperCase</span><span class="token punctuation">());</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="capitalizeeveryword" class="section double-padded">capitalizeEveryWord</h3><div class="section double-padded"><p>Capitalizes the first letter of every word in a string.</p><p>Use <code>String.replace()</code> to match the first character of each word and <code>String.toUpperCase()</code> to capitalize it.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">capitalizeEveryWord</span> <span class="token operator">=</span> str <span class="token operator">=></span> str<span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex">/\b[a-z]/g</span><span class="token punctuation">,</span> char <span class="token operator">=></span> char<span class="token punctuation">.</span><span class="token function">toUpperCase</span><span class="token punctuation">());</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">capitalizeEveryWord</span><span class="token punctuation">(</span><span class="token string">'hello world!'</span><span class="token punctuation">);</span> <span class="token comment">// 'Hello World!'</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="countvowels" class="section double-padded">countVowels</h3><div class="section double-padded"><p>Retuns <code>number</code> of vowels in provided string.</p><p>Use a regular expression to count the number of vowels <code>(A, E, I, O, U)</code> in a <code>string</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">countVowels</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token punctuation">(</span>str<span class="token punctuation">.</span><span class="token function">match</span><span class="token punctuation">(</span><span class="token regex">/[aeiou]/gi</span><span class="token punctuation">)</span> <span class="token operator">||</span> <span class="token punctuation">[]).</span>length<span class="token punctuation">;</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">countVowels</span><span class="token punctuation">(</span><span class="token string">'foobar'</span><span class="token punctuation">);</span> <span class="token comment">// 3</span>
 <span class="token function">countVowels</span><span class="token punctuation">(</span><span class="token string">'gym'</span><span class="token punctuation">);</span> <span class="token comment">// 0</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="escapehtml" class="section double-padded">escapeHTML</h3><div class="section double-padded"><p>Escapes a string for use in HTML.</p><p>Use <code>String.replace()</code> with a regex that matches the characters that need to be escaped, using a callback function to replace each character instance with its associated escaped character using a dictionary (object).</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">escapeHTML</span> <span class="token operator">=</span> str <span class="token operator">=></span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="escapehtml" class="section double-padded">escapeHTML</h3><div class="section double-padded"><p>Escapes a string for use in HTML.</p><p>Use <code>String.replace()</code> with a regexp that matches the characters that need to be escaped, using a callback function to replace each character instance with its associated escaped character using a dictionary (object).</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">escapeHTML</span> <span class="token operator">=</span> str <span class="token operator">=></span>
   str<span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span>
     <span class="token regex">/[&amp;&lt;>'"]/g</span><span class="token punctuation">,</span>
     tag <span class="token operator">=></span>
@@ -921,9 +825,9 @@ console<span class="token punctuation">.</span><span class="token function">log<
       <span class="token punctuation">}[</span>tag<span class="token punctuation">]</span> <span class="token operator">||</span> tag<span class="token punctuation">)
   );</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">escapeHTML</span><span class="token punctuation">(</span><span class="token string">'&lt;a href="#">Me &amp; you&lt;/a>'</span><span class="token punctuation">);</span> <span class="token comment">// '&amp;lt;a href=&amp;quot;#&amp;quot;&amp;gt;Me &amp;amp; you&amp;lt;/a&amp;gt;'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="escaperegexp" class="section double-padded">escapeRegExp</h3><div class="section double-padded"><p>Escapes a string to use in a regular expression.</p><p>Use <code>replace()</code> to escape special characters.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">escapeRegExp</span> <span class="token operator">=</span> str <span class="token operator">=></span> str<span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex">/[.*+?^${}()|[\]\\]/g</span><span class="token punctuation">,</span> <span class="token string">'\\$&amp;'</span><span class="token punctuation">);</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="escaperegexp" class="section double-padded">escapeRegExp</h3><div class="section double-padded"><p>Escapes a string to use in a regular expression.</p><p>Use <code>String.replace()</code> to escape special characters.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">escapeRegExp</span> <span class="token operator">=</span> str <span class="token operator">=></span> str<span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex">/[.*+?^${}()|[\]\\]/g</span><span class="token punctuation">,</span> <span class="token string">'\\$&amp;'</span><span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">escapeRegExp</span><span class="token punctuation">(</span><span class="token string">'(test)'</span><span class="token punctuation">);</span> <span class="token comment">// \\(test\\)</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="fromcamelcase" class="section double-padded">fromCamelCase</h3><div class="section double-padded"><p>Converts a string from camelcase.</p><p>Use <code>replace()</code> to remove underscores, hyphens, and spaces and convert words to camelcase. Omit the second argument to use a default separator of <code>_</code>.</p><pre class="language-js"><span class="token keyword">const</span> fromCamelCase <span class="token operator">=</span> <span class="token punctuation">(</span>str<span class="token punctuation">,</span> separator <span class="token operator">=</span> <span class="token string">'_'</span><span class="token punctuation">)</span> <span class="token operator">=></span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="fromcamelcase" class="section double-padded">fromCamelCase</h3><div class="section double-padded"><p>Converts a string from camelcase.</p><p>Use <code>String.replace()</code> to remove underscores, hyphens, and spaces and convert words to camelcase. Omit the second argument to use a default <code>separator</code> of <code>_</code>.</p><pre class="language-js"><span class="token keyword">const</span> fromCamelCase <span class="token operator">=</span> <span class="token punctuation">(</span>str<span class="token punctuation">,</span> separator <span class="token operator">=</span> <span class="token string">'_'</span><span class="token punctuation">)</span> <span class="token operator">=></span>
   str
     <span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex">/([a-z\d])([A-Z])/g</span><span class="token punctuation">,</span> <span class="token string">'$1'</span> <span class="token operator">+</span> separator <span class="token operator">+</span> <span class="token string">'$2'</span><span class="token punctuation">)
     .</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex">/([A-Z]+)([A-Z][a-z\d]+)/g</span><span class="token punctuation">,</span> <span class="token string">'$1'</span> <span class="token operator">+</span> separator <span class="token operator">+</span> <span class="token string">'$2'</span><span class="token punctuation">)
@@ -935,12 +839,12 @@ console<span class="token punctuation">.</span><span class="token function">log<
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">isAbsoluteURL</span><span class="token punctuation">(</span><span class="token string">'https://google.com'</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
 <span class="token function">isAbsoluteURL</span><span class="token punctuation">(</span><span class="token string">'ftp://www.myserver.net'</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
 <span class="token function">isAbsoluteURL</span><span class="token punctuation">(</span><span class="token string">'/foo/bar'</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="mask" class="section double-padded">mask</h3><div class="section double-padded"><p>Replaces all but the last <code>num</code> of characters with the specified mask character.</p><p>Use <code>String.slice()</code> to grab the portion of the characters that need to be masked and use <code>String.replace()</code> with a regex to replace every character with the mask character. Concatenate the masked characters with the remaining unmasked portion of the string. Omit the second argument, <code>num</code>, to keep a default of <code>4</code> characters unmasked. If <code>num</code> is negative, the unmasked characters will be at the start of the string. Omit the third argument, <code>mask</code>, to use a default character of <code>'*'</code> for the mask.</p><pre class="language-js"><span class="token keyword">const</span> mask <span class="token operator">=</span> <span class="token punctuation">(</span>cc<span class="token punctuation">,</span> num <span class="token operator">=</span> <span class="token number">4</span><span class="token punctuation">,</span> mask <span class="token operator">=</span> <span class="token string">'*'</span><span class="token punctuation">)</span> <span class="token operator">=></span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="mask" class="section double-padded">mask</h3><div class="section double-padded"><p>Replaces all but the last <code>num</code> of characters with the specified mask character.</p><p>Use <code>String.slice()</code> to grab the portion of the characters that need to be masked and use <code>String.replace()</code> with a regexp to replace every character with the mask character. Concatenate the masked characters with the remaining unmasked portion of the string. Omit the second argument, <code>num</code>, to keep a default of <code>4</code> characters unmasked. If <code>num</code> is negative, the unmasked characters will be at the start of the string. Omit the third argument, <code>mask</code>, to use a default character of <code>'*'</code> for the mask.</p><pre class="language-js"><span class="token keyword">const</span> mask <span class="token operator">=</span> <span class="token punctuation">(</span>cc<span class="token punctuation">,</span> num <span class="token operator">=</span> <span class="token number">4</span><span class="token punctuation">,</span> mask <span class="token operator">=</span> <span class="token string">'*'</span><span class="token punctuation">)</span> <span class="token operator">=></span>
   <span class="token punctuation">(</span><span class="token string">''</span> <span class="token operator">+</span> cc<span class="token punctuation">).</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token operator">-</span>num<span class="token punctuation">).</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex">/./g</span><span class="token punctuation">,</span> mask<span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token punctuation">(</span><span class="token string">''</span> <span class="token operator">+</span> cc<span class="token punctuation">).</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token operator">-</span>num<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">mask</span><span class="token punctuation">(</span><span class="token number">1234567890</span><span class="token punctuation">);</span> <span class="token comment">// '******7890'</span>
 <span class="token function">mask</span><span class="token punctuation">(</span><span class="token number">1234567890</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">);</span> <span class="token comment">// '*******890'</span>
 <span class="token function">mask</span><span class="token punctuation">(</span><span class="token number">1234567890</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">4</span><span class="token punctuation">,</span> <span class="token string">'$'</span><span class="token punctuation">);</span> <span class="token comment">// '1234$$$$$$'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="palindrome" class="section double-padded">palindrome</h3><div class="section double-padded"><p>Returns <code>true</code> if the given string is a palindrome, <code>false</code> otherwise.</p><p>Convert string <code>toLowerCase()</code> and use <code>replace()</code> to remove non-alphanumeric characters from it. Then, <code>split('')</code> into individual characters, <code>reverse()</code>, <code>join('')</code> and compare to the original, unreversed string, after converting it <code>tolowerCase()</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">palindrome</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token punctuation">{</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="palindrome" class="section double-padded">palindrome</h3><div class="section double-padded"><p>Returns <code>true</code> if the given string is a palindrome, <code>false</code> otherwise.</p><p>Convert string <code>String.toLowerCase()</code> and use <code>String.replace()</code> to remove non-alphanumeric characters from it. Then, <code>String.split('')</code> into individual characters, <code>Array.reverse()</code>, <code>String.join('')</code> and compare to the original, unreversed string, after converting it <code>String.tolowerCase()</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">palindrome</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">const</span> s <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">toLowerCase</span><span class="token punctuation">().</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex">/[\W_]/g</span><span class="token punctuation">,</span> <span class="token string">''</span><span class="token punctuation">);</span>
   <span class="token keyword">return</span> <span class="token punctuation">(</span>
     s <span class="token operator">===</span>
@@ -968,26 +872,19 @@ console<span class="token punctuation">.</span><span class="token function">log<
 <span class="token punctuation">};</span>
 <span class="token keyword">const</span> autoPluralize <span class="token operator">=</span> <span class="token function">pluralize</span><span class="token punctuation">(</span>PLURALS<span class="token punctuation">);</span>
 <span class="token function">autoPluralize</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token string">'person'</span><span class="token punctuation">);</span> <span class="token comment">// 'people'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="repeatstring" class="section double-padded">repeatString</h3><div class="section double-padded"><p>Repeats a string n times using <code>String.repeat()</code></p><p>If no string is provided the default is <code>&quot;&quot;</code> and the default number of times is 2.</p><pre class="language-js"><span class="token keyword">const</span> repeatString <span class="token operator">=</span> <span class="token punctuation">(</span>str <span class="token operator">=</span> <span class="token string">''</span><span class="token punctuation">,</span> num <span class="token operator">=</span> <span class="token number">2</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
-  <span class="token keyword">return</span> num <span class="token operator">>=</span> <span class="token number">0</span> <span class="token operator">?</span> str<span class="token punctuation">.</span><span class="token function">repeat</span><span class="token punctuation">(</span>num<span class="token punctuation">) :</span> str<span class="token punctuation">;
-};</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">repeatString</span><span class="token punctuation">(</span><span class="token string">'abc'</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">);</span> <span class="token comment">// 'abcabcabc'</span>
-<span class="token function">repeatString</span><span class="token punctuation">(</span><span class="token string">'abc'</span><span class="token punctuation">);</span> <span class="token comment">// 'abcabc'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="reversestring" class="section double-padded">reverseString</h3><div class="section double-padded"><p>Reverses a string.</p><p>Use <code>split('')</code> and <code>Array.reverse()</code> to reverse the order of the characters in the string. Combine characters to get a string using <code>join('')</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">reverseString</span> <span class="token operator">=</span> str <span class="token operator">=></span>
-  str
-    <span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">)
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="reversestring" class="section double-padded">reverseString</h3><div class="section double-padded"><p>Reverses a string.</p><p>Use the spread operator (<code>...</code>) and <code>Array.reverse()</code> to reverse the order of the characters in the string. Combine characters to get a string using <code>String.join('')</code>.</p><pre class="language-js">
+
+
+<span class="token keyword">const</span> <span class="token function-variable function">reverseString</span> <span class="token operator">=</span> str <span class="token operator">=></span>
+  <span class="token punctuation">[..</span>str<span class="token punctuation">]
     .</span><span class="token function">reverse</span><span class="token punctuation">()
     .</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">reverseString</span><span class="token punctuation">(</span><span class="token string">'foobar'</span><span class="token punctuation">);</span> <span class="token comment">// 'raboof'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="sortcharactersinstring" class="section double-padded">sortCharactersInString</h3><div class="section double-padded"><p>Alphabetically sorts the characters in a string.</p><p>Split the string using <code>split('')</code>, <code>Array.sort()</code> utilizing <code>localeCompare()</code>, recombine using <code>join('')</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">sortCharactersInString</span> <span class="token operator">=</span> str <span class="token operator">=></span>
-  str
-    <span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">)
-    .</span><span class="token function">sort</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> a<span class="token punctuation">.</span><span class="token function">localeCompare</span><span class="token punctuation">(</span>b<span class="token punctuation">))
-    .</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">);</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="sortcharactersinstring" class="section double-padded">sortCharactersInString</h3><div class="section double-padded"><p>Alphabetically sorts the characters in a string.</p><p>Use the spread operator (<code>...</code>), <code>Array.sort()</code> and <code>String.localeCompare()</code> to sort the characters in <code>str</code>, recombine using <code>String.join('')</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">sortCharactersInString</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token punctuation">[</span><span class="token operator">...</span>str<span class="token punctuation">].</span><span class="token function">sort</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> a<span class="token punctuation">.</span><span class="token function">localeCompare</span><span class="token punctuation">(</span>b<span class="token punctuation">)).</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">sortCharactersInString</span><span class="token punctuation">(</span><span class="token string">'cabbage'</span><span class="token punctuation">);</span> <span class="token comment">// 'aabbceg'</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="splitlines" class="section double-padded">splitLines</h3><div class="section double-padded"><p>Splits a multiline string into an array of lines.</p><p>Use <code>String.split()</code> and a regular expression to match line breaks and create an array.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">splitLines</span> <span class="token operator">=</span> str <span class="token operator">=></span> str<span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token regex">/\r?\n/</span><span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">splitLines</span><span class="token punctuation">(</span><span class="token string">'This\nis a\nmultiline\nstring.\n'</span><span class="token punctuation">);</span> <span class="token comment">// ['This', 'is a', 'multiline', 'string' , '']</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="tocamelcase" class="section double-padded">toCamelCase</h3><div class="section double-padded"><p>Converts a string to camelcase.</p><p>Break the string into words and combine them capitalizing the first letter of each word. For more detailed explanation of this Regex, <a href="https://regex101.com/r/bMCgAB/1">visit this Site</a>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">toCamelCase</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token punctuation">{</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="tocamelcase" class="section double-padded">toCamelCase</h3><div class="section double-padded"><p>Converts a string to camelcase.</p><p>Break the string into words and combine them capitalizing the first letter of each word, using a regexp.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">toCamelCase</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">let</span> s <span class="token operator">=</span>
     str <span class="token operator">&amp;&amp;</span>
     str
@@ -1000,7 +897,7 @@ console<span class="token punctuation">.</span><span class="token function">log<
 <span class="token function">toCamelCase</span><span class="token punctuation">(</span><span class="token string">'Some label that needs to be camelized'</span><span class="token punctuation">);</span> <span class="token comment">// 'someLabelThatNeedsToBeCamelized'</span>
 <span class="token function">toCamelCase</span><span class="token punctuation">(</span><span class="token string">'some-javascript-property'</span><span class="token punctuation">);</span> <span class="token comment">// 'someJavascriptProperty'</span>
 <span class="token function">toCamelCase</span><span class="token punctuation">(</span><span class="token string">'some-mixed_string with spaces_underscores-and-hyphens'</span><span class="token punctuation">);</span> <span class="token comment">// 'someMixedStringWithSpacesUnderscoresAndHyphens'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="tokebabcase" class="section double-padded">toKebabCase</h3><div class="section double-padded"><p>Converts a string to kebab case.</p><p>Break the string into words and combine them using <code>-</code> as a separator. For more detailed explanation of this Regex, <a href="https://regex101.com/r/bMCgAB/1">visit this Site</a>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">toKebabCase</span> <span class="token operator">=</span> str <span class="token operator">=></span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="tokebabcase" class="section double-padded">toKebabCase</h3><div class="section double-padded"><p>Converts a string to kebab case.</p><p>Break the string into words and combine them adding <code>-</code> as a separator, using a regexp.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">toKebabCase</span> <span class="token operator">=</span> str <span class="token operator">=></span>
   str <span class="token operator">&amp;&amp;</span>
   str
     <span class="token punctuation">.</span><span class="token function">match</span><span class="token punctuation">(</span><span class="token regex">/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g</span><span class="token punctuation">)
@@ -1011,7 +908,7 @@ console<span class="token punctuation">.</span><span class="token function">log<
 <span class="token function">toKebabCase</span><span class="token punctuation">(</span><span class="token string">'some-mixed_string With spaces_underscores-and-hyphens'</span><span class="token punctuation">);</span> <span class="token comment">// 'some-mixed-string-with-spaces-underscores-and-hyphens'</span>
 <span class="token function">toKebabCase</span><span class="token punctuation">(</span><span class="token string">'AllThe-small Things'</span><span class="token punctuation">);</span> <span class="token comment">// "all-the-small-things"</span>
 <span class="token function">toKebabCase</span><span class="token punctuation">(</span><span class="token string">'IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSomeXMLAndHTML'</span><span class="token punctuation">);</span> <span class="token comment">// "i-am-listening-to-fm-while-loading-different-url-on-my-browser-and-also-editing-xml-and-html"</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="tosnakecase" class="section double-padded">toSnakeCase</h3><div class="section double-padded"><p>Converts a string to snake case.</p><p>Break the string into words and combine them using <code>_</code> as a separator. For more detailed explanation of this Regex, <a href="https://regex101.com/r/bMCgAB/1">visit this Site</a>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">toSnakeCase</span> <span class="token operator">=</span> str <span class="token operator">=></span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="tosnakecase" class="section double-padded">toSnakeCase</h3><div class="section double-padded"><p>Converts a string to snake case.</p><p>Break the string into words and combine them adding <code>_</code> as a separator, using a regexp.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">toSnakeCase</span> <span class="token operator">=</span> str <span class="token operator">=></span>
   str <span class="token operator">&amp;&amp;</span>
   str
     <span class="token punctuation">.</span><span class="token function">match</span><span class="token punctuation">(</span><span class="token regex">/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g</span><span class="token punctuation">)
@@ -1022,7 +919,7 @@ console<span class="token punctuation">.</span><span class="token function">log<
 <span class="token function">toSnakeCase</span><span class="token punctuation">(</span><span class="token string">'some-mixed_string With spaces_underscores-and-hyphens'</span><span class="token punctuation">);</span> <span class="token comment">// 'some_mixed_string_with_spaces_underscores_and_hyphens'</span>
 <span class="token function">toSnakeCase</span><span class="token punctuation">(</span><span class="token string">'AllThe-small Things'</span><span class="token punctuation">);</span> <span class="token comment">// "all_the_smal_things"</span>
 <span class="token function">toSnakeCase</span><span class="token punctuation">(</span><span class="token string">'IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSomeXMLAndHTML'</span><span class="token punctuation">);</span> <span class="token comment">// "i_am_listening_to_fm_while_loading_different_url_on_my_browser_and_also_editing_some_xml_and_html"</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="truncatestring" class="section double-padded">truncateString</h3><div class="section double-padded"><p>Truncates a string up to a specified length.</p><p>Determine if the string's <code>length</code> is greater than <code>num</code>. Return the string truncated to the desired length, with <code>...</code> appended to the end or the original string.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">truncateString</span> <span class="token operator">=</span> <span class="token punctuation">(</span>str<span class="token punctuation">,</span> num<span class="token punctuation">)</span> <span class="token operator">=></span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="truncatestring" class="section double-padded">truncateString</h3><div class="section double-padded"><p>Truncates a string up to a specified length.</p><p>Determine if the string's <code>length</code> is greater than <code>num</code>. Return the string truncated to the desired length, with <code>'...'</code> appended to the end or the original string.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">truncateString</span> <span class="token operator">=</span> <span class="token punctuation">(</span>str<span class="token punctuation">,</span> num<span class="token punctuation">)</span> <span class="token operator">=></span>
   str<span class="token punctuation">.</span>length <span class="token operator">></span> num <span class="token operator">?</span> str<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">,</span> num <span class="token operator">></span> <span class="token number">3</span> <span class="token operator">?</span> num <span class="token operator">-</span> <span class="token number">3</span> <span class="token punctuation">:</span> num<span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token string">'...'</span> <span class="token punctuation">:</span> str<span class="token punctuation">;</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">truncateString</span><span class="token punctuation">(</span><span class="token string">'boomerang'</span><span class="token punctuation">,</span> <span class="token number">7</span><span class="token punctuation">);</span> <span class="token comment">// 'boom...'</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="unescapehtml" class="section double-padded">unescapeHTML</h3><div class="section double-padded"><p>Unescapes escaped HTML characters.</p><p>Use <code>String.replace()</code> with a regex that matches the characters that need to be unescaped, using a callback function to replace each escaped character instance with its associated unescaped character using a dictionary (object).</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">unescapeHTML</span> <span class="token operator">=</span> str <span class="token operator">=></span>
@@ -1038,59 +935,14 @@ console<span class="token punctuation">.</span><span class="token function">log<
       <span class="token punctuation">}[</span>tag<span class="token punctuation">]</span> <span class="token operator">||</span> tag<span class="token punctuation">)
   );</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">unescapeHTML</span><span class="token punctuation">(</span><span class="token string">'&amp;lt;a href=&amp;quot;#&amp;quot;&amp;gt;Me &amp;amp; you&amp;lt;/a&amp;gt;'</span><span class="token punctuation">);</span> <span class="token comment">// '&lt;a href="#">Me &amp; you&lt;/a>'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="words" class="section double-padded">words</h3><div class="section double-padded"><p>Converts a given string into an array of words.</p><p>Use <code>String.split()</code> with a supplied pattern (defaults to non-alpha as a regex) to convert to an array of strings. Use <code>Array.filter()</code> to remove any empty strings. Omit the second argument to use the default regex.</p><pre class="language-js"><span class="token keyword">const</span> words <span class="token operator">=</span> <span class="token punctuation">(</span>str<span class="token punctuation">,</span> pattern <span class="token operator">=</span> <span class="token regex">/[^a-zA-Z-]+/</span><span class="token punctuation">)</span> <span class="token operator">=></span> str<span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span>pattern<span class="token punctuation">).</span><span class="token function">filter</span><span class="token punctuation">(</span>Boolean<span class="token punctuation">);</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="words" class="section double-padded">words</h3><div class="section double-padded"><p>Converts a given string into an array of words.</p><p>Use <code>String.split()</code> with a supplied pattern (defaults to non-alpha as a regexp) to convert to an array of strings. Use <code>Array.filter()</code> to remove any empty strings. Omit the second argument to use the default regexp.</p><pre class="language-js"><span class="token keyword">const</span> words <span class="token operator">=</span> <span class="token punctuation">(</span>str<span class="token punctuation">,</span> pattern <span class="token operator">=</span> <span class="token regex">/[^a-zA-Z-]+/</span><span class="token punctuation">)</span> <span class="token operator">=></span> str<span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span>pattern<span class="token punctuation">).</span><span class="token function">filter</span><span class="token punctuation">(</span>Boolean<span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">words</span><span class="token punctuation">(</span><span class="token string">'I love javaScript!!'</span><span class="token punctuation">);</span> <span class="token comment">// ["I", "love", "javaScript"]</span>
 <span class="token function">words</span><span class="token punctuation">(</span><span class="token string">'python, javaScript &amp; coffee'</span><span class="token punctuation">);</span> <span class="token comment">// ["python", "javaScript", "coffee"]</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><h2 style="text-align:center">Utility</h2><div class="card fluid"><h3 id="cloneregexp" class="section double-padded">cloneRegExp</h3><div class="section double-padded"><p>Clones a regular expression.</p><p>Use <code>new RegExp()</code>, <code>RegExp.source</code> and <code>RegExp.flags</code> to clone the given regular expression.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">cloneRegExp</span> <span class="token operator">=</span> regExp <span class="token operator">=></span> <span class="token keyword">new</span> <span class="token class-name">RegExp</span><span class="token punctuation">(</span>regExp<span class="token punctuation">.</span>source<span class="token punctuation">,</span> regExp<span class="token punctuation">.</span>flags<span class="token punctuation">);</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token keyword">const</span> regExp <span class="token operator">=</span> <span class="token regex">/lorem ipsum/gi</span><span class="token punctuation">;</span>
-<span class="token keyword">const</span> regExp2 <span class="token operator">=</span> <span class="token function">cloneRegExp</span><span class="token punctuation">(</span>regExp<span class="token punctuation">);</span> <span class="token comment">// /lorem ipsum/gi</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="coalesce" class="section double-padded">coalesce</h3><div class="section double-padded"><p>Returns the first non-null/undefined argument.</p><p>Use <code>Array.find()</code> to return the first non <code>null</code>/<code>undefined</code> argument.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">coalesce</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=></span> args<span class="token punctuation">.</span><span class="token function">find</span><span class="token punctuation">(</span>_ <span class="token operator">=> !</span><span class="token punctuation">[</span>undefined<span class="token punctuation">,</span> <span class="token keyword">null</span><span class="token punctuation">].</span><span class="token function">includes</span><span class="token punctuation">(</span>_<span class="token punctuation">));</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">coalesce</span><span class="token punctuation">(</span><span class="token keyword">null</span><span class="token punctuation">,</span> undefined<span class="token punctuation">,</span> <span class="token string">''</span><span class="token punctuation">,</span> <span class="token number">NaN</span><span class="token punctuation">,</span> <span class="token string">'Waldo'</span><span class="token punctuation">);</span> <span class="token comment">// ""</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="coalescefactory" class="section double-padded">coalesceFactory</h3><div class="section double-padded"><p>Returns a customized coalesce function that returns the first argument that returns <code>true</code> from the provided argument validation function.</p><p>Use <code>Array.find()</code> to return the first argument that returns <code>true</code> from the provided argument validation function.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">coalesceFactory</span> <span class="token operator">=</span> valid <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=></span> args<span class="token punctuation">.</span><span class="token function">find</span><span class="token punctuation">(</span>valid<span class="token punctuation">);</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token keyword">const</span> customCoalesce <span class="token operator">=</span> <span class="token function">coalesceFactory</span><span class="token punctuation">(</span>_ <span class="token operator">=> !</span><span class="token punctuation">[</span><span class="token keyword">null</span><span class="token punctuation">,</span> undefined<span class="token punctuation">,</span> <span class="token string">''</span><span class="token punctuation">,</span> <span class="token number">NaN</span><span class="token punctuation">].</span><span class="token function">includes</span><span class="token punctuation">(</span>_<span class="token punctuation">));</span>
-<span class="token function">customCoalesce</span><span class="token punctuation">(</span>undefined<span class="token punctuation">,</span> <span class="token keyword">null</span><span class="token punctuation">,</span> <span class="token number">NaN</span><span class="token punctuation">,</span> <span class="token string">''</span><span class="token punctuation">,</span> <span class="token string">'Waldo'</span><span class="token punctuation">);</span> <span class="token comment">// "Waldo"</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="extendhex" class="section double-padded">extendHex</h3><div class="section double-padded"><p>Extends a 3-digit color code to a 6-digit color code.</p><p>Use <code>Array.map()</code>, <code>split()</code> and <code>Array.join()</code> to join the mapped array for converting a 3-digit RGB notated hexadecimal color-code to the 6-digit form. <code>String.slice()</code> is used to remove <code>#</code> from string start since it's added once.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">extendHex</span> <span class="token operator">=</span> shortHex <span class="token operator">=></span>
-  <span class="token string">'#'</span> <span class="token operator">+</span>
-  shortHex
-    <span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span>shortHex<span class="token punctuation">.</span><span class="token function">startsWith</span><span class="token punctuation">(</span><span class="token string">'#'</span><span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token number">1</span> <span class="token punctuation">:</span> <span class="token number">0</span><span class="token punctuation">)
-    .</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">)
-    .</span><span class="token function">map</span><span class="token punctuation">(</span>x <span class="token operator">=></span> x <span class="token operator">+</span> x<span class="token punctuation">)
-    .</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">);</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">extendHex</span><span class="token punctuation">(</span><span class="token string">'#03f'</span><span class="token punctuation">);</span> <span class="token comment">// '#0033ff'</span>
-<span class="token function">extendHex</span><span class="token punctuation">(</span><span class="token string">'05a'</span><span class="token punctuation">);</span> <span class="token comment">// '#0055aa'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="gettype" class="section double-padded">getType</h3><div class="section double-padded"><p>Returns the native type of a value.</p><p>Returns lowercased constructor name of value, &quot;undefined&quot; or &quot;null&quot; if value is undefined or null</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">getType</span> <span class="token operator">=</span> v <span class="token operator">=></span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><h2 style="text-align:center">Type</h2><div class="card fluid"><h3 id="gettype" class="section double-padded">getType</h3><div class="section double-padded"><p>Returns the native type of a value.</p><p>Returns lowercased constructor name of value, <code>&quot;undefined&quot;</code> or <code>&quot;null&quot;</code> if value is <code>undefined</code> or <code>null</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">getType</span> <span class="token operator">=</span> v <span class="token operator">=></span>
   v <span class="token operator">===</span> undefined <span class="token operator">?</span> <span class="token string">'undefined'</span> <span class="token punctuation">:</span> v <span class="token operator">===</span> <span class="token keyword">null</span> <span class="token operator">?</span> <span class="token string">'null'</span> <span class="token punctuation">:</span> v<span class="token punctuation">.</span>constructor<span class="token punctuation">.</span>name<span class="token punctuation">.</span><span class="token function">toLowerCase</span><span class="token punctuation">();</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">getType</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Set</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">]));</span> <span class="token comment">// 'Set'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="geturlparameters" class="section double-padded">getURLParameters</h3><div class="section double-padded"><p>Returns an object containing the parameters of the current URL.</p><p>Use <code>match()</code> with an appropriate regular expression to get all key-value pairs, <code>Array.reduce()</code> to map and combine them into a single object. Pass <code>location.search</code> as the argument to apply to the current <code>url</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">getURLParameters</span> <span class="token operator">=</span> url <span class="token operator">=></span>
-  url
-    <span class="token punctuation">.</span><span class="token function">match</span><span class="token punctuation">(</span><span class="token regex">/([^?=&amp;]+)(=([^&amp;]*))/g</span><span class="token punctuation">)
-    .</span><span class="token function">reduce</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> v<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">((</span>a<span class="token punctuation">[</span>v<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">,</span> v<span class="token punctuation">.</span><span class="token function">indexOf</span><span class="token punctuation">(</span><span class="token string">'='</span><span class="token punctuation">))]</span> <span class="token operator">=</span> v<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span>v<span class="token punctuation">.</span><span class="token function">indexOf</span><span class="token punctuation">(</span><span class="token string">'='</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">)),</span> a<span class="token punctuation">), {});</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">getURLParameters</span><span class="token punctuation">(</span><span class="token string">'http://url.com/page?name=Adam&amp;surname=Smith'</span><span class="token punctuation">);</span> <span class="token comment">// {name: 'Adam', surname: 'Smith'}</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="hextorgb" class="section double-padded">hexToRGB</h3><div class="section double-padded"><p>Converts a color code to a <code>rgb()</code> or <code>rgba()</code> string if alpha value is provided.</p><p>Use bitwise right-shift operator and mask bits with <code>&amp;</code> (and) operator to convert a hexadecimal color code (with or without prefixed with <code>#</code>) to a string with the RGB values. If it's 3-digit color code, first convert to 6-digit version. If an alpha value is provided alongside 6-digit hex, give <code>rgba()</code> string in return.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">hexToRGB</span> <span class="token operator">=</span> hex <span class="token operator">=></span> <span class="token punctuation">{</span>
-  <span class="token keyword">let</span> alpha <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
-    h <span class="token operator">=</span> hex<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span>hex<span class="token punctuation">.</span><span class="token function">startsWith</span><span class="token punctuation">(</span><span class="token string">'#'</span><span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token number">1</span> <span class="token punctuation">:</span> <span class="token number">0</span><span class="token punctuation">);</span>
-  <span class="token keyword">if</span> <span class="token punctuation">(</span>h<span class="token punctuation">.</span>length <span class="token operator">===</span> <span class="token number">3</span><span class="token punctuation">)</span> h <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token operator">...</span>h<span class="token punctuation">].</span><span class="token function">map</span><span class="token punctuation">(</span>x <span class="token operator">=></span> x <span class="token operator">+</span> x<span class="token punctuation">).</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">);</span>
-  <span class="token keyword">else if</span> <span class="token punctuation">(</span>h<span class="token punctuation">.</span>length <span class="token operator">===</span> <span class="token number">8</span><span class="token punctuation">)</span> alpha <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
-  h <span class="token operator">=</span> <span class="token function">parseInt</span><span class="token punctuation">(</span>h<span class="token punctuation">,</span> <span class="token number">16</span><span class="token punctuation">);</span>
-  <span class="token keyword">return</span> <span class="token punctuation">(</span>
-    <span class="token string">'rgb'</span> <span class="token operator">+</span>
-    <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token string">'a'</span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span>
-    <span class="token string">'('</span> <span class="token operator">+</span>
-    <span class="token punctuation">(</span>h <span class="token operator">>>></span> <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token number">24</span> <span class="token punctuation">:</span> <span class="token number">16</span><span class="token punctuation">))</span> <span class="token operator">+</span>
-    <span class="token string">', '</span> <span class="token operator">+</span>
-    <span class="token punctuation">((</span>h <span class="token operator">&amp;</span> <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token number">0x00ff0000</span> <span class="token punctuation">:</span> <span class="token number">0x00ff00</span><span class="token punctuation">))</span> <span class="token operator">>>></span> <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token number">16</span> <span class="token punctuation">:</span> <span class="token number">8</span><span class="token punctuation">))</span> <span class="token operator">+</span>
-    <span class="token string">', '</span> <span class="token operator">+</span>
-    <span class="token punctuation">((</span>h <span class="token operator">&amp;</span> <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token number">0x0000ff00</span> <span class="token punctuation">:</span> <span class="token number">0x0000ff</span><span class="token punctuation">))</span> <span class="token operator">>>></span> <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token number">8</span> <span class="token punctuation">:</span> <span class="token number">0</span><span class="token punctuation">))</span> <span class="token operator">+</span>
-    <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token template-string"><span class="token string">`, </span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>h <span class="token operator">&amp;</span> <span class="token number">0x000000ff</span><span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">`</span></span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span>
-    <span class="token string">')'</span>
-  <span class="token punctuation">);
-};</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">hexToRGB</span><span class="token punctuation">(</span><span class="token string">'#27ae60ff'</span><span class="token punctuation">);</span> <span class="token comment">// 'rgba(39, 174, 96, 255)'</span>
-<span class="token function">hexToRGB</span><span class="token punctuation">(</span><span class="token string">'27ae60'</span><span class="token punctuation">);</span> <span class="token comment">// 'rgb(39, 174, 96)'</span>
-<span class="token function">hexToRGB</span><span class="token punctuation">(</span><span class="token string">'#fff'</span><span class="token punctuation">);</span> <span class="token comment">// 'rgb(255, 255, 255)'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="isarray" class="section double-padded">isArray</h3><div class="section double-padded"><p>Checks if the given argument is an array.</p><p>Use <code>Array.isArray()</code> to check if a value is classified as an array.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">isArray</span> <span class="token operator">=</span> val <span class="token operator">=> !!</span>val <span class="token operator">&amp;&amp;</span> Array<span class="token punctuation">.</span><span class="token function">isArray</span><span class="token punctuation">(</span>val<span class="token punctuation">);</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">isArray</span><span class="token punctuation">(</span><span class="token keyword">null</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
-<span class="token function">isArray</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">]);</span> <span class="token comment">// true</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="isarray" class="section double-padded">isArray</h3><div class="section double-padded"><p>Checks if the given argument is an array.</p><p>Use <code>Array.isArray()</code> to check if a value is classified as an array.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">isArray</span> <span class="token operator">=</span> val <span class="token operator">=></span> Array<span class="token punctuation">.</span><span class="token function">isArray</span><span class="token punctuation">(</span>val<span class="token punctuation">);</span>
+</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">isArray</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">]);</span> <span class="token comment">// true</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="isarraylike" class="section double-padded">isArrayLike</h3><div class="section double-padded"><p>Checks if the provided argument is array-like (i.e. is iterable).</p><p>Use the spread operator (<code>...</code>) to check if the provided argument is iterable inside a <code>try... catch</code> block and the comma operator (<code>,</code>) to return the appropriate value.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">isArrayLike</span> <span class="token operator">=</span> val <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">try</span> <span class="token punctuation">{</span>
     <span class="token keyword">return</span> <span class="token punctuation">[</span><span class="token operator">...</span>val<span class="token punctuation">],</span> <span class="token boolean">true</span><span class="token punctuation">;
@@ -1105,8 +957,7 @@ console<span class="token punctuation">.</span><span class="token function">log<
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">isBoolean</span><span class="token punctuation">(</span><span class="token keyword">null</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
 <span class="token function">isBoolean</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="isfunction" class="section double-padded">isFunction</h3><div class="section double-padded"><p>Checks if the given argument is a function.</p><p>Use <code>typeof</code> to check if a value is classified as a function primitive.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">isFunction</span> <span class="token operator">=</span> val <span class="token operator">=></span> <span class="token keyword">typeof</span> val <span class="token operator">===</span> <span class="token string">'function'</span><span class="token punctuation">;</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">isFunction</span><span class="token punctuation">(</span><span class="token keyword">null</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
-<span class="token function">isFunction</span><span class="token punctuation">(</span><span class="token string">'x'</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
+</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">isFunction</span><span class="token punctuation">(</span><span class="token string">'x'</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
 <span class="token function">isFunction</span><span class="token punctuation">(</span>x <span class="token operator">=></span> x<span class="token punctuation">);</span> <span class="token comment">// true</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="isnull" class="section double-padded">isNull</h3><div class="section double-padded"><p>Returns <code>true</code> if the specified value is <code>null</code>, <code>false</code> otherwise.</p><p>Use the strict equality operator to check if the value and of <code>val</code> are equal to <code>null</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">isNull</span> <span class="token operator">=</span> val <span class="token operator">=></span> val <span class="token operator">===</span> <span class="token keyword">null</span><span class="token punctuation">;</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">isNull</span><span class="token punctuation">(</span><span class="token keyword">null</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
@@ -1146,6 +997,50 @@ console<span class="token punctuation">.</span><span class="token function">log<
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">isValidJSON</span><span class="token punctuation">(</span><span class="token string">'{"name":"Adam","age":20}'</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
 <span class="token function">isValidJSON</span><span class="token punctuation">(</span><span class="token string">'{"name":"Adam",age:"20"}'</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
 <span class="token function">isValidJSON</span><span class="token punctuation">(</span><span class="token keyword">null</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><h2 style="text-align:center">Utility</h2><div class="card fluid"><h3 id="cloneregexp" class="section double-padded">cloneRegExp</h3><div class="section double-padded"><p>Clones a regular expression.</p><p>Use <code>new RegExp()</code>, <code>RegExp.source</code> and <code>RegExp.flags</code> to clone the given regular expression.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">cloneRegExp</span> <span class="token operator">=</span> regExp <span class="token operator">=></span> <span class="token keyword">new</span> <span class="token class-name">RegExp</span><span class="token punctuation">(</span>regExp<span class="token punctuation">.</span>source<span class="token punctuation">,</span> regExp<span class="token punctuation">.</span>flags<span class="token punctuation">);</span>
+</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token keyword">const</span> regExp <span class="token operator">=</span> <span class="token regex">/lorem ipsum/gi</span><span class="token punctuation">;</span>
+<span class="token keyword">const</span> regExp2 <span class="token operator">=</span> <span class="token function">cloneRegExp</span><span class="token punctuation">(</span>regExp<span class="token punctuation">);</span> <span class="token comment">// /lorem ipsum/gi</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="coalesce" class="section double-padded">coalesce</h3><div class="section double-padded"><p>Returns the first non-null/undefined argument.</p><p>Use <code>Array.find()</code> to return the first non <code>null</code>/<code>undefined</code> argument.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">coalesce</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=></span> args<span class="token punctuation">.</span><span class="token function">find</span><span class="token punctuation">(</span>_ <span class="token operator">=> !</span><span class="token punctuation">[</span>undefined<span class="token punctuation">,</span> <span class="token keyword">null</span><span class="token punctuation">].</span><span class="token function">includes</span><span class="token punctuation">(</span>_<span class="token punctuation">));</span>
+</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">coalesce</span><span class="token punctuation">(</span><span class="token keyword">null</span><span class="token punctuation">,</span> undefined<span class="token punctuation">,</span> <span class="token string">''</span><span class="token punctuation">,</span> <span class="token number">NaN</span><span class="token punctuation">,</span> <span class="token string">'Waldo'</span><span class="token punctuation">);</span> <span class="token comment">// ""</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="coalescefactory" class="section double-padded">coalesceFactory</h3><div class="section double-padded"><p>Returns a customized coalesce function that returns the first argument that returns <code>true</code> from the provided argument validation function.</p><p>Use <code>Array.find()</code> to return the first argument that returns <code>true</code> from the provided argument validation function.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">coalesceFactory</span> <span class="token operator">=</span> valid <span class="token operator">=></span> <span class="token punctuation">(</span><span class="token operator">...</span>args<span class="token punctuation">)</span> <span class="token operator">=></span> args<span class="token punctuation">.</span><span class="token function">find</span><span class="token punctuation">(</span>valid<span class="token punctuation">);</span>
+</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token keyword">const</span> customCoalesce <span class="token operator">=</span> <span class="token function">coalesceFactory</span><span class="token punctuation">(</span>_ <span class="token operator">=> !</span><span class="token punctuation">[</span><span class="token keyword">null</span><span class="token punctuation">,</span> undefined<span class="token punctuation">,</span> <span class="token string">''</span><span class="token punctuation">,</span> <span class="token number">NaN</span><span class="token punctuation">].</span><span class="token function">includes</span><span class="token punctuation">(</span>_<span class="token punctuation">));</span>
+<span class="token function">customCoalesce</span><span class="token punctuation">(</span>undefined<span class="token punctuation">,</span> <span class="token keyword">null</span><span class="token punctuation">,</span> <span class="token number">NaN</span><span class="token punctuation">,</span> <span class="token string">''</span><span class="token punctuation">,</span> <span class="token string">'Waldo'</span><span class="token punctuation">);</span> <span class="token comment">// "Waldo"</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="extendhex" class="section double-padded">extendHex</h3><div class="section double-padded"><p>Extends a 3-digit color code to a 6-digit color code.</p><p>Use <code>Array.map()</code>, <code>String.split()</code> and <code>Array.join()</code> to join the mapped array for converting a 3-digit RGB notated hexadecimal color-code to the 6-digit form. <code>Array.slice()</code> is used to remove <code>#</code> from string start since it's added once.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">extendHex</span> <span class="token operator">=</span> shortHex <span class="token operator">=></span>
+  <span class="token string">'#'</span> <span class="token operator">+</span>
+  shortHex
+    <span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span>shortHex<span class="token punctuation">.</span><span class="token function">startsWith</span><span class="token punctuation">(</span><span class="token string">'#'</span><span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token number">1</span> <span class="token punctuation">:</span> <span class="token number">0</span><span class="token punctuation">)
+    .</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">)
+    .</span><span class="token function">map</span><span class="token punctuation">(</span>x <span class="token operator">=></span> x <span class="token operator">+</span> x<span class="token punctuation">)
+    .</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">);</span>
+</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">extendHex</span><span class="token punctuation">(</span><span class="token string">'#03f'</span><span class="token punctuation">);</span> <span class="token comment">// '#0033ff'</span>
+<span class="token function">extendHex</span><span class="token punctuation">(</span><span class="token string">'05a'</span><span class="token punctuation">);</span> <span class="token comment">// '#0055aa'</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="geturlparameters" class="section double-padded">getURLParameters</h3><div class="section double-padded"><p>Returns an object containing the parameters of the current URL.</p><p>Use <code>String.match()</code> with an appropriate regular expression to get all key-value pairs, <code>Array.reduce()</code> to map and combine them into a single object. Pass <code>location.search</code> as the argument to apply to the current <code>url</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">getURLParameters</span> <span class="token operator">=</span> url <span class="token operator">=></span>
+  url
+    <span class="token punctuation">.</span><span class="token function">match</span><span class="token punctuation">(</span><span class="token regex">/([^?=&amp;]+)(=([^&amp;]*))/g</span><span class="token punctuation">)
+    .</span><span class="token function">reduce</span><span class="token punctuation">((</span>a<span class="token punctuation">,</span> v<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">((</span>a<span class="token punctuation">[</span>v<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">,</span> v<span class="token punctuation">.</span><span class="token function">indexOf</span><span class="token punctuation">(</span><span class="token string">'='</span><span class="token punctuation">))]</span> <span class="token operator">=</span> v<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span>v<span class="token punctuation">.</span><span class="token function">indexOf</span><span class="token punctuation">(</span><span class="token string">'='</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">)),</span> a<span class="token punctuation">), {});</span>
+</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">getURLParameters</span><span class="token punctuation">(</span><span class="token string">'http://url.com/page?name=Adam&amp;surname=Smith'</span><span class="token punctuation">);</span> <span class="token comment">// {name: 'Adam', surname: 'Smith'}</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="hextorgb" class="section double-padded">hexToRGB<mark class="tag">advanced</mark></h3><div class="section double-padded"><p>Converts a color code to a <code>rgb()</code> or <code>rgba()</code> string if alpha value is provided.</p><p>Use bitwise right-shift operator and mask bits with <code>&amp;</code> (and) operator to convert a hexadecimal color code (with or without prefixed with <code>#</code>) to a string with the RGB values. If it's 3-digit color code, first convert to 6-digit version. If an alpha value is provided alongside 6-digit hex, give <code>rgba()</code> string in return.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">hexToRGB</span> <span class="token operator">=</span> hex <span class="token operator">=></span> <span class="token punctuation">{</span>
+  <span class="token keyword">let</span> alpha <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
+    h <span class="token operator">=</span> hex<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span>hex<span class="token punctuation">.</span><span class="token function">startsWith</span><span class="token punctuation">(</span><span class="token string">'#'</span><span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token number">1</span> <span class="token punctuation">:</span> <span class="token number">0</span><span class="token punctuation">);</span>
+  <span class="token keyword">if</span> <span class="token punctuation">(</span>h<span class="token punctuation">.</span>length <span class="token operator">===</span> <span class="token number">3</span><span class="token punctuation">)</span> h <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token operator">...</span>h<span class="token punctuation">].</span><span class="token function">map</span><span class="token punctuation">(</span>x <span class="token operator">=></span> x <span class="token operator">+</span> x<span class="token punctuation">).</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">);</span>
+  <span class="token keyword">else if</span> <span class="token punctuation">(</span>h<span class="token punctuation">.</span>length <span class="token operator">===</span> <span class="token number">8</span><span class="token punctuation">)</span> alpha <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
+  h <span class="token operator">=</span> <span class="token function">parseInt</span><span class="token punctuation">(</span>h<span class="token punctuation">,</span> <span class="token number">16</span><span class="token punctuation">);</span>
+  <span class="token keyword">return</span> <span class="token punctuation">(</span>
+    <span class="token string">'rgb'</span> <span class="token operator">+</span>
+    <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token string">'a'</span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span>
+    <span class="token string">'('</span> <span class="token operator">+</span>
+    <span class="token punctuation">(</span>h <span class="token operator">>>></span> <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token number">24</span> <span class="token punctuation">:</span> <span class="token number">16</span><span class="token punctuation">))</span> <span class="token operator">+</span>
+    <span class="token string">', '</span> <span class="token operator">+</span>
+    <span class="token punctuation">((</span>h <span class="token operator">&amp;</span> <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token number">0x00ff0000</span> <span class="token punctuation">:</span> <span class="token number">0x00ff00</span><span class="token punctuation">))</span> <span class="token operator">>>></span> <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token number">16</span> <span class="token punctuation">:</span> <span class="token number">8</span><span class="token punctuation">))</span> <span class="token operator">+</span>
+    <span class="token string">', '</span> <span class="token operator">+</span>
+    <span class="token punctuation">((</span>h <span class="token operator">&amp;</span> <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token number">0x0000ff00</span> <span class="token punctuation">:</span> <span class="token number">0x0000ff</span><span class="token punctuation">))</span> <span class="token operator">>>></span> <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token number">8</span> <span class="token punctuation">:</span> <span class="token number">0</span><span class="token punctuation">))</span> <span class="token operator">+</span>
+    <span class="token punctuation">(</span>alpha <span class="token operator">?</span> <span class="token template-string"><span class="token string">`, </span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>h <span class="token operator">&amp;</span> <span class="token number">0x000000ff</span><span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">`</span></span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span>
+    <span class="token string">')'</span>
+  <span class="token punctuation">);
+};</span>
+</pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">hexToRGB</span><span class="token punctuation">(</span><span class="token string">'#27ae60ff'</span><span class="token punctuation">);</span> <span class="token comment">// 'rgba(39, 174, 96, 255)'</span>
+<span class="token function">hexToRGB</span><span class="token punctuation">(</span><span class="token string">'27ae60'</span><span class="token punctuation">);</span> <span class="token comment">// 'rgb(39, 174, 96)'</span>
+<span class="token function">hexToRGB</span><span class="token punctuation">(</span><span class="token string">'#fff'</span><span class="token punctuation">);</span> <span class="token comment">// 'rgb(255, 255, 255)'</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="prettybytes" class="section double-padded">prettyBytes</h3><div class="section double-padded"><p>Converts a number in bytes to a human-readable string.</p><p>Use an array dictionary of units to be accessed based on the exponent. Use <code>Number.toPrecision()</code> to truncate the number to a certain number of digits. Return the prettified string by building it up, taking into account the supplied options and whether it is negative or not. Omit the second argument, <code>precision</code>, to use a default precision of <code>3</code> digits. Omit the third argument, <code>addSpace</code>, to add space between the number and unit by default.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">prettyBytes</span> <span class="token operator">=</span> <span class="token punctuation">(</span>num<span class="token punctuation">,</span> precision <span class="token operator">=</span> <span class="token number">3</span><span class="token punctuation">,</span> addSpace <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
   <span class="token keyword">const</span> UNITS <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'B'</span><span class="token punctuation">,</span> <span class="token string">'KB'</span><span class="token punctuation">,</span> <span class="token string">'MB'</span><span class="token punctuation">,</span> <span class="token string">'GB'</span><span class="token punctuation">,</span> <span class="token string">'TB'</span><span class="token punctuation">,</span> <span class="token string">'PB'</span><span class="token punctuation">,</span> <span class="token string">'EB'</span><span class="token punctuation">,</span> <span class="token string">'ZB'</span><span class="token punctuation">,</span> <span class="token string">'YB'</span><span class="token punctuation">];</span>
   <span class="token keyword">if</span> <span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">abs</span><span class="token punctuation">(</span>num<span class="token punctuation">)</span> <span class="token operator">&lt;</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token keyword">return</span> num <span class="token operator">+</span> <span class="token punctuation">(</span>addSpace <span class="token operator">?</span> <span class="token string">' '</span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span> UNITS<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">];</span>
@@ -1161,17 +1056,8 @@ console<span class="token punctuation">.</span><span class="token function">log<
   <span class="token keyword">return</span> <span class="token string">'#'</span> <span class="token operator">+</span> <span class="token punctuation">(</span>n<span class="token punctuation">.</span>length <span class="token operator">!==</span> <span class="token number">6</span> <span class="token operator">?</span> <span class="token punctuation">((</span>Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">()</span> <span class="token operator">*</span> <span class="token number">0xf</span><span class="token punctuation">)</span> <span class="token operator">|</span> <span class="token number">0</span><span class="token punctuation">).</span><span class="token function">toString</span><span class="token punctuation">(</span><span class="token number">16</span><span class="token punctuation">)</span> <span class="token operator">+</span> n <span class="token punctuation">:</span> n<span class="token punctuation">);
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">randomHexColorCode</span><span class="token punctuation">();</span> <span class="token comment">// "#e34155"</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="rgbtohex" class="section double-padded">RGBToHex</h3><div class="section double-padded"><p>Converts the values of RGB components to a color code.</p><p>Convert given RGB parameters to hexadecimal string using bitwise left-shift operator (<code>&lt;&lt;</code>) and <code>toString(16)</code>, then <code>padStart(6,'0')</code> to get a 6-digit hexadecimal value.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">RGBToHex</span> <span class="token operator">=</span> <span class="token punctuation">(</span>r<span class="token punctuation">,</span> g<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">((</span>r <span class="token operator">&lt;&lt;</span> <span class="token number">16</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token punctuation">(</span>g <span class="token operator">&lt;&lt;</span> <span class="token number">8</span><span class="token punctuation">)</span> <span class="token operator">+</span> b<span class="token punctuation">).</span><span class="token function">toString</span><span class="token punctuation">(</span><span class="token number">16</span><span class="token punctuation">).</span><span class="token function">padStart</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">,</span> <span class="token string">'0'</span><span class="token punctuation">);</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="rgbtohex" class="section double-padded">RGBToHex</h3><div class="section double-padded"><p>Converts the values of RGB components to a color code.</p><p>Convert given RGB parameters to hexadecimal string using bitwise left-shift operator (<code>&lt;&lt;</code>) and <code>toString(16)</code>, then <code>String.padStart(6,'0')</code> to get a 6-digit hexadecimal value.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">RGBToHex</span> <span class="token operator">=</span> <span class="token punctuation">(</span>r<span class="token punctuation">,</span> g<span class="token punctuation">,</span> b<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">((</span>r <span class="token operator">&lt;&lt;</span> <span class="token number">16</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token punctuation">(</span>g <span class="token operator">&lt;&lt;</span> <span class="token number">8</span><span class="token punctuation">)</span> <span class="token operator">+</span> b<span class="token punctuation">).</span><span class="token function">toString</span><span class="token punctuation">(</span><span class="token number">16</span><span class="token punctuation">).</span><span class="token function">padStart</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">,</span> <span class="token string">'0'</span><span class="token punctuation">);</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">RGBToHex</span><span class="token punctuation">(</span><span class="token number">255</span><span class="token punctuation">,</span> <span class="token number">165</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">);</span> <span class="token comment">// 'ffa501'</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="sdbm" class="section double-padded">sbdm</h3><div class="section double-padded"><p>This algorithm is a simple hash-algorithm that hashes it input string <code>s</code> into a whole number.</p><p>Use <code>split('')</code> and <code>Array.reduce()</code> to create a hash of the input string, utilizing bit shifting.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">sdbm</span> <span class="token operator">=</span> str <span class="token operator">=></span> <span class="token punctuation">{</span>
-  <span class="token keyword">let</span> arr <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">);</span>
-  <span class="token keyword">return</span> arr<span class="token punctuation">.</span><span class="token function">reduce</span><span class="token punctuation">(
-    (</span>hashCode<span class="token punctuation">,</span> currentVal<span class="token punctuation">)</span> <span class="token operator">=></span>
-      <span class="token punctuation">(</span>hashCode <span class="token operator">=</span> currentVal<span class="token punctuation">.</span><span class="token function">charCodeAt</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token punctuation">(</span>hashCode <span class="token operator">&lt;&lt;</span> <span class="token number">6</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token punctuation">(</span>hashCode <span class="token operator">&lt;&lt;</span> <span class="token number">16</span><span class="token punctuation">)</span> <span class="token operator">-</span> hashCode<span class="token punctuation">),</span>
-    <span class="token number">0</span>
-  <span class="token punctuation">);
-};</span>
-</pre><label class="collapse">Show examples</label><pre class="language-js">console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token function">sdbm</span><span class="token punctuation">(</span><span class="token string">'name'</span><span class="token punctuation">));</span> <span class="token comment">// -3521204949</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="timetaken" class="section double-padded">timeTaken</h3><div class="section double-padded"><p>Measures the time taken by a function to execute.</p><p>Use <code>console.time()</code> and <code>console.timeEnd()</code> to measure the difference between the start and end times to determine how long the callback took to execute.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">timeTaken</span> <span class="token operator">=</span> callback <span class="token operator">=></span> <span class="token punctuation">{</span>
   console<span class="token punctuation">.</span><span class="token function">time</span><span class="token punctuation">(</span><span class="token string">'timeTaken'</span><span class="token punctuation">);</span>
   <span class="token keyword">const</span> r <span class="token operator">=</span> <span class="token function">callback</span><span class="token punctuation">();</span>
@@ -1192,7 +1078,7 @@ console<span class="token punctuation">.</span><span class="token function">log<
     :</span> int <span class="token operator">+</span> ordinals<span class="token punctuation">[</span><span class="token number">3</span><span class="token punctuation">];
 };</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">toOrdinalSuffix</span><span class="token punctuation">(</span><span class="token string">'123'</span><span class="token punctuation">);</span> <span class="token comment">// "123rd"</span>
-</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="validatenumber" class="section double-padded">validateNumber</h3><div class="section double-padded"><p>Returns <code>true</code> if the given value is a number, <code>false</code> otherwise.</p><p>Use <code>!isNaN</code> in combination with <code>parseFloat()</code> to check if the argument is a number. Use <code>isFinite()</code> to check if the number is finite. Use <code>Number()</code> to check if the coercion holds.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">validateNumber</span> <span class="token operator">=</span> n <span class="token operator">=> !</span><span class="token function">isNaN</span><span class="token punctuation">(</span><span class="token function">parseFloat</span><span class="token punctuation">(</span>n<span class="token punctuation">))</span> <span class="token operator">&amp;&amp;</span> <span class="token function">isFinite</span><span class="token punctuation">(</span>n<span class="token punctuation">)</span> <span class="token operator">&amp;&amp;</span> <span class="token function">Number</span><span class="token punctuation">(</span>n<span class="token punctuation">)</span> <span class="token operator">==</span> n<span class="token punctuation">;</span>
+</pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="validatenumber" class="section double-padded">validateNumber</h3><div class="section double-padded"><p>Returns <code>true</code> if the given value is a number, <code>false</code> otherwise.</p><p>Use <code>!isNaN()</code> in combination with <code>parseFloat()</code> to check if the argument is a number. Use <code>isFinite()</code> to check if the number is finite. Use <code>Number()</code> to check if the coercion holds.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">validateNumber</span> <span class="token operator">=</span> n <span class="token operator">=> !</span><span class="token function">isNaN</span><span class="token punctuation">(</span><span class="token function">parseFloat</span><span class="token punctuation">(</span>n<span class="token punctuation">))</span> <span class="token operator">&amp;&amp;</span> <span class="token function">isFinite</span><span class="token punctuation">(</span>n<span class="token punctuation">)</span> <span class="token operator">&amp;&amp;</span> <span class="token function">Number</span><span class="token punctuation">(</span>n<span class="token punctuation">)</span> <span class="token operator">==</span> n<span class="token punctuation">;</span>
 </pre><label class="collapse">Show examples</label><pre class="language-js"><span class="token function">validateNumber</span><span class="token punctuation">(</span><span class="token string">'10'</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
 </pre><button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button></div></div><div class="card fluid"><h3 id="yesno" class="section double-padded">yesNo</h3><div class="section double-padded"><p>Returns <code>true</code> if the string is <code>y</code>/<code>yes</code> or <code>false</code> if the string is <code>n</code>/<code>no</code>.</p><p>Use <code>RegExp.test()</code> to check if the string evaluates to <code>y/yes</code> or <code>n/no</code>. Omit the second argument, <code>def</code> to set the default answer as <code>no</code>.</p><pre class="language-js"><span class="token keyword">const</span> <span class="token function-variable function">yesNo</span> <span class="token operator">=</span> <span class="token punctuation">(</span>val<span class="token punctuation">,</span> def <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">)</span> <span class="token operator">=></span>
   <span class="token regex">/^(y|yes)$/i</span><span class="token punctuation">.</span><span class="token function">test</span><span class="token punctuation">(</span>val<span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token boolean">true</span> <span class="token punctuation">:</span> <span class="token regex">/^(n|no)$/i</span><span class="token punctuation">.</span><span class="token function">test</span><span class="token punctuation">(</span>val<span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token boolean">false</span> <span class="token punctuation">:</span> def<span class="token punctuation">;</span>
diff --git a/docs/mini.css b/docs/mini.css
index 2a48b33cd..2a3784bf5 100644
--- a/docs/mini.css
+++ b/docs/mini.css
@@ -1 +1 @@
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.drawer-close:focus{background:var(--dr-hv-b-col)}@media screen and (max-width: 320px){[type="checkbox"].drawer+*{width:100%}}[type="checkbox"].drawer:checked+*{left:0}@media screen and (min-width: 768px){[type="checkbox"].drawer:not(.persistent)+*{position:static;height:100%;z-index:1100}[type="checkbox"].drawer:not(.persistent)+* .drawer-close{display:none}}:root{--mrk-b-col:#424242;--mrk-f-col:#fafafa}mark{background:var(--mrk-b-col);color:var(--mrk-f-col);font-size:.5em;line-height:1em;border-radius:var(--u-br-r);padding:calc(var(--u-p) / 4) calc(var(--u-p) / 2)}mark.inline-block{display:inline-block;font-size:1em;line-height:1.5;padding:calc(var(--u-p) / 2) var(--u-p)}:root{--tst-b-col:#212121;--tst-f-col:#fafafa}.toast{position:fixed;bottom:calc(var(--u-m) * 3);left:50%;transform:translate(-50%, -50%);z-index:1111;color:var(--tst-f-col);background:var(--tst-b-col);border-radius:calc(var(--u-br-r) * 16);padding:var(--u-p) calc(var(--u-p) * 3)}.toast{bottom:calc(var(--u-m) / 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a{text-decoration:none;color:#111}header #title{position:relative;top:-1rem}@media screen and (max-width: 500px){header #title{font-size:1rem;display:block}}header h1 small{display:block;font-size:0.875rem;color:#888;margin-top:-0.8rem}@media screen and (max-width: 768px){header h1 small{font-size:0.75rem}}@media screen and (max-width: 600px){header h1 small{font-size:0.625rem}}@media screen and (max-width: 500px){header h1 small{font-size:0.5rem;margin-top:-1.2rem}}label#menu-toggle{position:absolute;left:0.5rem;top:0.5rem;width:3.4375rem}main{padding:0}:root{--clps-lbl-b-col:#e8e8e8;--clps-lbl-f-col:#212121;--clps-lbl-h-b-col:#f0f0f0;--clps-sel-lbl-b-col:#ececec;--clps-br-col:#ddd;--clps-cnt-b-col:#fafafa;--clps-sel-lbl-br-col:#0277bd}label.collapse{width:100%;display:inline-block;cursor:pointer;box-sizing:border-box;transition:background 0.3s;color:var(--clps-lbl-f-col);background:var(--clps-lbl-b-col);border:.0625rem solid var(--clps-br-col);padding:calc(1.5 * var(--u-p));border-radius:var(--u-br-r)}label.collapse:hover,label.collapse:focus{background:var(--clps-lbl-h-b-col)}label.collapse+pre{box-sizing:border-box;height:0;max-height:1px;overflow:auto;margin:0;border:0;padding:0;transition:max-height 0.3s}label.collapse.toggled{background:var(--clps-sel-lbl-b-col);border-bottom-color:var(--clps-sel-lbl-br-col);border-bottom-left-radius:0;border-bottom-right-radius:0}label.collapse.toggled+pre{border-top-left-radius:0;border-top-right-radius:0;position:relative;width:100%;height:auto;border:.0625rem solid var(--clps-br-col);border-top:0;padding:calc(2 * var(--u-p));max-height:400px}button.primary.clipboard-copy{width:100%;margin-left:0}button.primary.clipboard-copy>img{vertical-align:bottom}code[class*="language-"],pre[class*="language-"]{color:#222;text-align:left;white-space:pre;word-spacing:normal;word-break:normal;word-wrap:normal;line-height:1.8;-moz-tab-size:2;-o-tab-size:2;tab-size:2;-webkit-hypens:none;-moz-hyphens:none;-ms-hyphens:none;hyphens:none}pre[class*="language-"]{padding:calc(2 * var(--u-p));overflow:auto;margin:var(--u-m) 0}pre[class*="language-"]::-moz-selection,pre[class*="language-"] ::-moz-selection,code[class*="language-"]::-moz-selection,code[class*="language-"] ::-moz-selection{background:#b3d4fc}pre[class*="language-"]::selection,pre[class*="language-"] ::selection,code[class*="language-"]::selection,code[class*="language-"] ::selection{background:#b3d4fc}:not(pre)>code[class*="language-"]{padding:.1em;border-radius:.3em;white-space:normal}.token.comment,.token.prolog,.token.doctype,.token.cdata{color:#7a8490}.token.punctuation{color:#666}.namespace{opacity:.7}.token.property,.token.tag,.token.boolean,.token.constant,.token.symbol,.token.deleted,.token.function{color:#005cc5}.token.number,.token.class-name{color:#832ed2}.token.selector,.token.attr-name,.token.string,.token.char,.token.builtin,.token.inserted{color:#067e36}.token.operator,.token.entity,.token.url,.language-css .token.string,.style .token.string,.token.atrule,.token.attr-value,.token.keyword{color:#d73a49}.token.regex{color:#097cab}.token.important,.token.variable{color:#e90}.token.important,.token.bold{font-weight:bold}.token.italic{font-style:italic}.token.entity{cursor:help}
diff --git a/docs/mini/flavor.scss b/docs/mini/flavor.scss
index c400fdde5..b3e3f11c0 100644
--- a/docs/mini/flavor.scss
+++ b/docs/mini/flavor.scss
@@ -131,6 +131,8 @@ $_drawer-right: false;
 
 @import 'navigation';
 
+$mark-back-color: #424242;
+$mark-font-size: 0.5em;
 
 $toast-back-color:       #212121;
 
@@ -163,6 +165,12 @@ $_include-collapse: false;
   transition: opacity 0.3s ease-in-out;
 }
 
+mark {
+  position: relative;
+  top: -0.25rem;
+  left: 0.25rem;
+}
+
 /*
   Custom elements for contextual background elements, toasts and tooltips.
 */
@@ -318,7 +326,7 @@ button.primary.clipboard-copy {
 
 code[class*="language-"],
 pre[class*="language-"] {
-  color: black;
+  color: #222;
   text-align: left;
   white-space: pre;
   word-spacing: normal;
@@ -385,8 +393,9 @@ code[class*="language-"]::selection, code[class*="language-"] ::selection {
 }
 
 
-.token.number{
-  color: #8132b5;
+.token.number,
+.token.class-name {
+  color: #832ed2;
 }
 
 .token.selector,
@@ -395,7 +404,7 @@ code[class*="language-"]::selection, code[class*="language-"] ::selection {
 .token.char,
 .token.builtin,
 .token.inserted {
-  color: #007e5d;
+  color: #067e36;
 }
 
 .token.operator,
@@ -410,7 +419,7 @@ code[class*="language-"]::selection, code[class*="language-"] ::selection {
 }
 
 .token.regex {
-  color: #007972;
+  color: #097cab;
 }
 .token.important,
 .token.variable {
diff --git a/scripts/build.js b/scripts/build.js
index 1b9a464a6..1354de249 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -73,7 +73,11 @@ try {
       .readFileSync('tag_database', 'utf8')
       .split('\n')
       .slice(0, -1)
-      .map(v => v.split(':').slice(0, 2))
+      .map(v => {
+        let data = v.split(':').slice(0, 2);
+        data[1] = data[1].split(',').map(t => t.trim());
+        return data;
+      })
   );
 } catch (err) {
   console.log(`${chalk.red('ERROR!')} During tag database loading: ${err}`);
@@ -85,7 +89,7 @@ try {
   const tags = [
     ...new Set(
       Object.entries(tagDbData)
-        .map(t => t[1])
+        .map(t => t[1][0])
         .filter(v => v)
         .sort((a, b) => a.localeCompare(b))
     )
@@ -101,16 +105,16 @@ try {
 
     if (capitalizedTag === 'Uncategorized') {
       uncategorizedOutput += `### _${capitalizedTag}_\n\n<details>\n<summary>View contents</summary>\n\n`;
-      for (const taggedSnippet of Object.entries(tagDbData).filter(v => v[1] === tag)) {
-        uncategorizedOutput += `* [\`${taggedSnippet[0]}\`](#${taggedSnippet[0].toLowerCase()})\n`;
+      for (const taggedSnippet of Object.entries(tagDbData).filter(v => v[1][0] === tag)) {
+        uncategorizedOutput += `* [\`${taggedSnippet[0]}\`](#${taggedSnippet[0].toLowerCase()}${taggedSnippet[1].includes('advanced')?'-':''})\n`;
       }
       uncategorizedOutput += '\n</details>\n\n';
     } else {
       output += `### ${
         EMOJIS[tag] || ''
       } ${capitalizedTag}\n\n<details>\n<summary>View contents</summary>\n\n`;
-      for (const taggedSnippet of Object.entries(tagDbData).filter(v => v[1] === tag)) {
-        output += `* [\`${taggedSnippet[0]}\`](#${taggedSnippet[0].toLowerCase()})\n`;
+      for (const taggedSnippet of Object.entries(tagDbData).filter(v => v[1][0] === tag)) {
+        output += `* [\`${taggedSnippet[0]}\`](#${taggedSnippet[0].toLowerCase()}${taggedSnippet[1].includes('advanced')?'-':''})\n`;
       }
       output += '\n</details>\n\n';
     }
@@ -122,17 +126,23 @@ try {
   // Loop over tags and snippets to create the list of snippets
   for (const tag of tags) {
     const capitalizedTag = capitalize(tag, true);
-
+    // ![advanced](/advanced.svg)
     if (capitalizedTag == 'Uncategorized') {
       uncategorizedOutput += `---\n ## _${capitalizedTag}_\n`;
-      for (const taggedSnippet of Object.entries(tagDbData).filter(v => v[1] === tag)) {
+      for (const taggedSnippet of Object.entries(tagDbData).filter(v => v[1][0] === tag)) {
         uncategorizedOutput += `\n${snippets[taggedSnippet[0] + '.md'] +
           '\n<br>[⬆ back to top](#table-of-contents)\n\n'}`;
       }
     } else {
       output += `---\n ## ${EMOJIS[tag] || ''} ${capitalizedTag}\n`;
-      for (const taggedSnippet of Object.entries(tagDbData).filter(v => v[1] === tag)) {
+      for (const taggedSnippet of Object.entries(tagDbData).filter(v => v[1][0] === tag)) {
         let data = snippets[taggedSnippet[0] + '.md'];
+        // Add advanced tag
+        if(taggedSnippet[1].includes('advanced')){
+          data = data.split(/\r?\n/);
+          data[0] = data[0] +' ![advanced](/advanced.svg)';
+          data = data.join('\n');
+        }
         data =
           data.slice(0, data.lastIndexOf('```js')) +
           '<details>\n<summary>Examples</summary>\n\n' +
diff --git a/scripts/tag.js b/scripts/tag.js
index bf57fd7cf..c3dd9aa64 100644
--- a/scripts/tag.js
+++ b/scripts/tag.js
@@ -50,10 +50,14 @@ try {
       .readFileSync('tag_database', 'utf8')
       .split('\n')
       .slice(0, -1)
-      .map(v => v.split(':').slice(0, 2))
+      .map(v => {
+        let data = v.split(':').slice(0, 2);
+        data[1] = data[1].split(',').map(t => t.trim());
+        return data;
+      })
   );
   tagDbStats = Object.entries(tagDbData)
-    .sort((a, b) => a[1].localeCompare(b[1]))
+    .sort((a, b) => a[1][0].localeCompare(b[1][0]))
     .reduce((acc, val) => {
       acc.hasOwnProperty(val[1]) ? acc[val[1]]++ : (acc[val[1]] = 1);
       return acc;
@@ -68,9 +72,9 @@ try {
   for (let snippet of Object.entries(snippets))
     if (
       tagDbData.hasOwnProperty(snippet[0].slice(0, -3)) &&
-      tagDbData[snippet[0].slice(0, -3)].trim()
+      tagDbData[snippet[0].slice(0, -3)].join(',').trim()
     )
-      output += `${snippet[0].slice(0, -3)}:${tagDbData[snippet[0].slice(0, -3)].trim()}\n`;
+      output += `${snippet[0].slice(0, -3)}:${tagDbData[snippet[0].slice(0, -3)].join(',').trim()}\n`;
     else {
       output += `${snippet[0].slice(0, -3)}:uncategorized\n`;
       missingTags++;
diff --git a/scripts/web.js b/scripts/web.js
index eeb848d9b..6b86c7683 100644
--- a/scripts/web.js
+++ b/scripts/web.js
@@ -61,7 +61,7 @@ const objectFromPairs = arr => arr.reduce((a, v) => ((a[v[0]] = v[1]), a), {});
 const capitalize = (str, lowerRest = false) =>
   str.slice(0, 1).toUpperCase() + (lowerRest ? str.slice(1).toLowerCase() : str.slice(1));
 // Start the timer of the script
-console.time('Builder');
+console.time('Webber');
 // Synchronously read all snippets and sort them as necessary (case-insensitive)
 try {
   let snippetFilenames = fs.readdirSync(snippetsPath);
@@ -96,7 +96,11 @@ try {
       .readFileSync('tag_database', 'utf8')
       .split('\n')
       .slice(0, -1)
-      .map(v => v.split(':').slice(0, 2))
+      .map(v => {
+        let data = v.split(':').slice(0, 2);
+        data[1] = data[1].split(',').map(t => t.trim());
+        return data;
+      })
   );
 } catch (err) {
   // Handle errors (hopefully not!)
@@ -109,7 +113,7 @@ try {
   output += `${startPart + '\n'}`;
   let uncategorizedOutput = '';
   // Loop over tags and snippets to create the table of contents
-  for (let tag of [...new Set(Object.entries(tagDbData).map(t => t[1]))]
+  for (let tag of [...new Set(Object.entries(tagDbData).map(t => t[1][0]))]
     .filter(v => v)
     .sort((a, b) => a.localeCompare(b))) {
     if (capitalize(tag, true) == 'Uncategorized') {
@@ -120,12 +124,12 @@ try {
           .replace(/<p>/g, '')
           .replace(/<\/p>/g, '') +
         `</h3>`;
-      for (let taggedSnippet of Object.entries(tagDbData).filter(v => v[1] === tag))
+      for (let taggedSnippet of Object.entries(tagDbData).filter(v => v[1][0] === tag))
         uncategorizedOutput += md
           .render(`[${taggedSnippet[0]}](#${taggedSnippet[0].toLowerCase()})\n`)
           .replace(/<p>/g, '')
           .replace(/<\/p>/g, '')
-          .replace(/<a/g, '<a class="sublink-1"');
+          .replace(/<a/g, `<a class="sublink-1" tags="${taggedSnippet[1].join(',')}"`);
       uncategorizedOutput += '\n';
     } else {
       output +=
@@ -135,12 +139,12 @@ try {
           .replace(/<p>/g, '')
           .replace(/<\/p>/g, '') +
         `</h3>`;
-      for (let taggedSnippet of Object.entries(tagDbData).filter(v => v[1] === tag))
+      for (let taggedSnippet of Object.entries(tagDbData).filter(v => v[1][0] === tag))
         output += md
           .render(`[${taggedSnippet[0]}](#${taggedSnippet[0].toLowerCase()})\n`)
           .replace(/<p>/g, '')
           .replace(/<\/p>/g, '')
-          .replace(/<a/g, '<a class="sublink-1"');
+          .replace(/<a/g, `<a class="sublink-1" tags="${taggedSnippet[1].join(',')}"`);
       output += '\n';
     }
   }
@@ -149,19 +153,20 @@ try {
   output += `<a id="top">&nbsp;</a>`;
   uncategorizedOutput = '';
   // Loop over tags and snippets to create the list of snippets
-  for (let tag of [...new Set(Object.entries(tagDbData).map(t => t[1]))]
+  for (let tag of [...new Set(Object.entries(tagDbData).map(t => t[1][0]))]
     .filter(v => v)
     .sort((a, b) => a.localeCompare(b))) {
     if (capitalize(tag, true) == 'Uncategorized') {
       uncategorizedOutput += md
         .render(`## ${capitalize(tag, true)}\n`)
         .replace(/<h2>/g, '<h2 style="text-align:center;">');
-      for (let taggedSnippet of Object.entries(tagDbData).filter(v => v[1] === tag))
+      for (let taggedSnippet of Object.entries(tagDbData).filter(v => v[1][0] === tag))
         uncategorizedOutput +=
           '<div class="card fluid">' +
           md
             .render(`\n${snippets[taggedSnippet[0] + '.md']}`)
             .replace(/<h3/g, `<h3 id="${taggedSnippet[0].toLowerCase()}" class="section double-padded"`)
+            .replace(/<\/h3>/g, `${taggedSnippet[1].includes('advanced')?'<mark class="tag">advanced</mark>':''}</h3>`)
             .replace(/<pre><code class="language-js">([^\0]*?)<\/code><\/pre>/gm, (match, p1) => `<pre class="language-js">${Prism.highlight(unescapeHTML(p1), Prism.languages.javascript)}</pre>`)
             .replace(/<\/pre>\s+<pre/g, '</pre><label class="collapse">Show examples</label><pre') +
           '<button class="primary clipboard-copy"><img src="clipboard.svg" alt="clipboard">&nbsp;Copy to clipboard</button>' +
@@ -170,12 +175,13 @@ try {
       output += md
         .render(`## ${capitalize(tag, true)}\n`)
         .replace(/<h2>/g, '<h2 style="text-align:center;">');
-      for (let taggedSnippet of Object.entries(tagDbData).filter(v => v[1] === tag))
+      for (let taggedSnippet of Object.entries(tagDbData).filter(v => v[1][0] === tag))
         output +=
           '<div class="card fluid">' +
           md
             .render(`\n${snippets[taggedSnippet[0] + '.md']}`)
             .replace(/<h3/g, `<h3 id="${taggedSnippet[0].toLowerCase()}" class="section double-padded"`)
+            .replace(/<\/h3>/g, `${taggedSnippet[1].includes('advanced')?'<mark class="tag">advanced</mark>':''}</h3>`)
             .replace(/<\/h3>/g, '</h3><div class="section double-padded">')
             .replace(/<pre><code class="language-js">([^\0]*?)<\/code><\/pre>/gm, (match, p1) => `<pre class="language-js">${Prism.highlight(unescapeHTML(p1), Prism.languages.javascript)}</pre>`)
             .replace(/<\/pre>\s+<pre/g, '</pre><label class="collapse">Show examples</label><pre') +
@@ -247,4 +253,4 @@ try {
 // Log a success message
 console.log(`${chalk.green('SUCCESS!')} index.html file generated!`);
 // Log the time taken
-console.timeEnd('Builder');
+console.timeEnd('Webber');
diff --git a/snippets/RGBToHex.md b/snippets/RGBToHex.md
index 1a566c82a..4b3f6b35f 100644
--- a/snippets/RGBToHex.md
+++ b/snippets/RGBToHex.md
@@ -2,7 +2,7 @@
 
 Converts the values of RGB components to a color code.
 
-Convert given RGB parameters to hexadecimal string using bitwise left-shift operator (`<<`) and `toString(16)`, then `padStart(6,'0')` to get a 6-digit hexadecimal value.
+Convert given RGB parameters to hexadecimal string using bitwise left-shift operator (`<<`) and `toString(16)`, then `String.padStart(6,'0')` to get a 6-digit hexadecimal value.
 
 ```js
 const RGBToHex = (r, g, b) => ((r << 16) + (g << 8) + b).toString(16).padStart(6, '0');
diff --git a/snippets/average.md b/snippets/average.md
index 6eccc0636..fff5dd5a6 100644
--- a/snippets/average.md
+++ b/snippets/average.md
@@ -1,17 +1,14 @@
 ### average
 
-Returns the average of an of two or more numbers/arrays.
+Returns the average of an of two or more numbers.
 
 Use `Array.reduce()` to add each value to an accumulator, initialized with a value of `0`, divide by the `length` of the array.
 
 ```js
-const average = (...arr) => {
-  const nums = [].concat(...arr);
-  return nums.reduce((acc, val) => acc + val, 0) / nums.length;
-};
+const average = (...nums) => [...nums].reduce((acc, val) => acc + val, 0) / nums.length;
 ```
 
 ```js
-average([1, 2, 3]); // 2
+average(...[1, 2, 3]); // 2
 average(1, 2, 3); // 2
 ```
diff --git a/snippets/byteSize.md b/snippets/byteSize.md
index 5693da1ab..459ee3796 100644
--- a/snippets/byteSize.md
+++ b/snippets/byteSize.md
@@ -1,6 +1,6 @@
 ### byteSize
 
-Returns the length of string.
+Returns the length of a string in bytes.
 
 Convert a given string to a [`Blob` Object](https://developer.mozilla.org/en-US/docs/Web/API/Blob) and find its `size`.
 
diff --git a/snippets/capitalize.md b/snippets/capitalize.md
index f9a26e7be..c56616e51 100644
--- a/snippets/capitalize.md
+++ b/snippets/capitalize.md
@@ -2,7 +2,7 @@
 
 Capitalizes the first letter of a string.
 
-Use destructuring and `toUpperCase()` to capitalize first letter, `...rest` to get array of characters after first letter and then `Array.join('')` to make it a string again.
+Use array destructuring and `String.toUpperCase()` to capitalize first letter, `...rest` to get array of characters after first letter and then `Array.join('')` to make it a string again.
 Omit the `lowerRest` parameter to keep the rest of the string intact, or set it to `true` to convert to lowercase.
 
 ```js
diff --git a/snippets/capitalizeEveryWord.md b/snippets/capitalizeEveryWord.md
index d02d2296f..845553aa3 100644
--- a/snippets/capitalizeEveryWord.md
+++ b/snippets/capitalizeEveryWord.md
@@ -2,7 +2,7 @@
 
 Capitalizes the first letter of every word in a string.
 
-Use `replace()` to match the first character of each word and `toUpperCase()` to capitalize it.
+Use `String.replace()` to match the first character of each word and `String.toUpperCase()` to capitalize it.
 
 ```js
 const capitalizeEveryWord = str => str.replace(/\b[a-z]/g, char => char.toUpperCase());
diff --git a/snippets/cleanObj.md b/snippets/cleanObj.md
index b53a42806..e068deb10 100644
--- a/snippets/cleanObj.md
+++ b/snippets/cleanObj.md
@@ -2,8 +2,8 @@
 
 Removes any properties except the ones specified from a JSON object.
 
-Use `Object.keys()` method to loop over given JSON object and deleting keys that are not `include`d in given array.
-Also if you give it a special key (`childIndicator`) it will search deeply inside it to apply function to inner objects too.
+Use `Object.keys()` method to loop over given JSON object and deleting keys that are not included in given array.
+If you pass a special key,`childIndicator`, it will search deeply apply the function to inner objects, too.
 
 ```js
 const cleanObj = (obj, keysToKeep = [], childIndicator) => {
diff --git a/snippets/countOccurrences.md b/snippets/countOccurrences.md
index 927631f6f..b6e0d2aad 100644
--- a/snippets/countOccurrences.md
+++ b/snippets/countOccurrences.md
@@ -5,7 +5,7 @@ Counts the occurrences of a value in an array.
 Use `Array.reduce()` to increment a counter each time you encounter the specific value inside the array.
 
 ```js
-const countOccurrences = (arr, value) => arr.reduce((a, v) => (v === value ? a + 1 : a + 0), 0);
+const countOccurrences = (arr, val) => arr.reduce((a, v) => (v === val ? a + 1 : a + 0), 0);
 ```
 
 ```js
diff --git a/snippets/digitize.md b/snippets/digitize.md
index 60f636847..9222ce30f 100644
--- a/snippets/digitize.md
+++ b/snippets/digitize.md
@@ -2,11 +2,11 @@
 
 Converts a number to an array of digits.
 
-Convert the number to a string, using spread operators in ES6(`[...string]`) build an array.
+Convert the number to a string, using the spread operator (`...`) to build an array.
 Use `Array.map()` and `parseInt()` to transform each value to an integer.
 
 ```js
-const digitize = n => [...('' + n)].map(i => parseInt(i));
+const digitize = n => [...`${n}`].map(i => parseInt(i));
 ```
 
 ```js
diff --git a/snippets/elo.md b/snippets/elo.md
index e08171878..622cdc981 100644
--- a/snippets/elo.md
+++ b/snippets/elo.md
@@ -4,8 +4,10 @@ Computes the new ratings between two or more opponents using the [Elo rating sys
 of pre-ratings and returns an array containing post-ratings.
 The array should be ordered from best performer to worst performer (winner -> loser).
 
-Use the exponent `**` operator and math operators to compute the expected score (chance of winning)
-of each opponent and compute the new rating for each. Loop through the ratings, using each permutation to compute the post-Elo rating for each player in a pairwise fashion. Omit the second argument to use the default K-factor of 32, or supply a custom K-factor value. For details on the third argument, see the last example.
+Use the exponent `**` operator and math operators to compute the expected score (chance of winning).
+of each opponent and compute the new rating for each.
+Loop through the ratings, using each permutation to compute the post-Elo rating for each player in a pairwise fashion. 
+Omit the second argument to use the default `kFactor` of 32.
 
 ```js
 const elo = ([...ratings], kFactor = 32, selfRating) => {
@@ -35,7 +37,7 @@ elo([1200, 1200], 64); // [1232, 1168]
 // 4 player FFA, all same rank
 elo([1200, 1200, 1200, 1200]).map(Math.round); // [1246, 1215, 1185, 1154]
 /*
-For teams, each rating can adjusted based on own team's average rating vs. 
+For teams, each rating can adjusted based on own team's average rating vs.
 average rating of opposing team, with the score being added to their
 own individual rating by supplying it as the third argument.
 */
diff --git a/snippets/escapeHTML.md b/snippets/escapeHTML.md
index 2db4cf0c0..85c772621 100644
--- a/snippets/escapeHTML.md
+++ b/snippets/escapeHTML.md
@@ -2,7 +2,7 @@
 
 Escapes a string for use in HTML.
 
-Use `String.replace()` with a regex that matches the characters that need to be escaped, using a callback function to replace each character instance with its associated escaped character using a dictionary (object).
+Use `String.replace()` with a regexp that matches the characters that need to be escaped, using a callback function to replace each character instance with its associated escaped character using a dictionary (object).
 
 ```js
 const escapeHTML = str =>
diff --git a/snippets/escapeRegExp.md b/snippets/escapeRegExp.md
index e83e13667..52a6aa3a2 100644
--- a/snippets/escapeRegExp.md
+++ b/snippets/escapeRegExp.md
@@ -2,7 +2,7 @@
 
 Escapes a string to use in a regular expression.
 
-Use `replace()` to escape special characters.
+Use `String.replace()` to escape special characters.
 
 ```js
 const escapeRegExp = str => str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
diff --git a/snippets/extendHex.md b/snippets/extendHex.md
index 39ca049fe..57231ee07 100644
--- a/snippets/extendHex.md
+++ b/snippets/extendHex.md
@@ -2,8 +2,9 @@
 
 Extends a 3-digit color code to a 6-digit color code.
 
-Use `Array.map()`, `split()` and `Array.join()` to join the mapped array for converting a 3-digit RGB notated hexadecimal color-code to the 6-digit form.
-`String.slice()` is used to remove `#` from string start since it's added once.
+Use `Array.map()`, `String.split()` and `Array.join()` to join the mapped array for converting a 3-digit RGB notated hexadecimal color-code to the 6-digit form.
+`Array.slice()` is used to remove `#` from string start since it's added once.
+
 ```js
 const extendHex = shortHex =>
   '#' +
diff --git a/snippets/flatten.md b/snippets/flatten.md
index dd90ca3be..a31bbe2d0 100644
--- a/snippets/flatten.md
+++ b/snippets/flatten.md
@@ -2,7 +2,7 @@
 
 Flattens an array.
 
-Use a new array and concatenate it with the spread input array causing a shallow denesting of any contained arrays.
+Use a new array, `Array.concat()` and the spread operator (`...`) to cause a shallow denesting of any contained arrays.
 
 ```js
 const flatten = arr => [].concat(...arr);
diff --git a/snippets/flip.md b/snippets/flip.md
index 3ab12dd78..bcc66e500 100644
--- a/snippets/flip.md
+++ b/snippets/flip.md
@@ -1,6 +1,6 @@
 ### flip
 
-Flip takes a function as an argument, then makes the first argument the last
+Flip takes a function as an argument, then makes the first argument the last.
 
 Return a closure that takes variadic inputs, and splices the last argument to make it the first argument before applying the rest.
 
diff --git a/snippets/fromCamelCase.md b/snippets/fromCamelCase.md
index d67b37d4a..503fcdeeb 100644
--- a/snippets/fromCamelCase.md
+++ b/snippets/fromCamelCase.md
@@ -2,8 +2,8 @@
 
 Converts a string from camelcase.
 
-Use `replace()` to remove underscores, hyphens, and spaces and convert words to camelcase.
-Omit the second argument to use a default separator of `_`.
+Use `String.replace()` to remove underscores, hyphens, and spaces and convert words to camelcase.
+Omit the second argument to use a default `separator` of `_`.
 
 ```js
 const fromCamelCase = (str, separator = '_') =>
diff --git a/snippets/gcd.md b/snippets/gcd.md
index 39ab41b6e..5b3f7a29a 100644
--- a/snippets/gcd.md
+++ b/snippets/gcd.md
@@ -9,10 +9,11 @@ Otherwise, return the GCD of `y` and the remainder of the division `x/y`.
 ```js
 const gcd = (...arr) => {
   const _gcd = (x, y) => (!y ? x : gcd(y, x % y));
-  return [].concat(...arr).reduce((a, b) => _gcd(a, b));
+  return [...arr].reduce((a, b) => _gcd(a, b));
 };
 ```
 
 ```js
 gcd(8, 36); // 4
+gcd(...[12, 8, 32]); // 4
 ```
diff --git a/snippets/getType.md b/snippets/getType.md
index 612c248fa..ae3d9268a 100644
--- a/snippets/getType.md
+++ b/snippets/getType.md
@@ -2,7 +2,7 @@
 
 Returns the native type of a value.
 
-Returns lowercased constructor name of value, "undefined" or "null" if value is undefined or null
+Returns lowercased constructor name of value, `"undefined"` or `"null"` if value is `undefined` or `null`.
 
 ```js
 const getType = v =>
diff --git a/snippets/getURLParameters.md b/snippets/getURLParameters.md
index 69138e57f..cf601b0f5 100644
--- a/snippets/getURLParameters.md
+++ b/snippets/getURLParameters.md
@@ -2,7 +2,7 @@
 
 Returns an object containing the parameters of the current URL.
 
-Use `match()` with an appropriate regular expression to get all key-value pairs, `Array.reduce()` to map and combine them into a single object.
+Use `String.match()` with an appropriate regular expression to get all key-value pairs, `Array.reduce()` to map and combine them into a single object.
 Pass `location.search` as the argument to apply to the current `url`.
 
 ```js
diff --git a/snippets/initializeArrayWithRange.md b/snippets/initializeArrayWithRange.md
index 2b7e40348..228c6fcaf 100644
--- a/snippets/initializeArrayWithRange.md
+++ b/snippets/initializeArrayWithRange.md
@@ -2,7 +2,7 @@
 
 Initializes an array containing the numbers in the specified range where `start` and `end` are inclusive with there common difference `step`.
 
-Use `Array(Math.ceil((end+1-start)/step)` to create an array of the desired length(the amounts of elements is equal to `(end-start)/step` or `(end+1-start)/step` for inclusive end), `Array.map()` to fill with the desired values in a range.
+Use `Array.from(Math.ceil((end+1-start)/step))` to create an array of the desired length(the amounts of elements is equal to `(end-start)/step` or `(end+1-start)/step` for inclusive end), `Array.map()` to fill with the desired values in a range.
 You can omit `start` to use a default value of `0`.
 You can omit `step` to use a default value of `1`.
 
diff --git a/snippets/initializeArrayWithValues.md b/snippets/initializeArrayWithValues.md
index b91496068..46880dd45 100644
--- a/snippets/initializeArrayWithValues.md
+++ b/snippets/initializeArrayWithValues.md
@@ -3,10 +3,10 @@
 Initializes and fills an array with the specified values.
 
 Use `Array(n)` to create an array of the desired length, `fill(v)` to fill it with the desired values.
-You can omit `value` to use a default value of `0`.
+You can omit `val` to use a default value of `0`.
 
 ```js
-const initializeArrayWithValues = (n, value = 0) => Array(n).fill(value);
+const initializeArrayWithValues = (n, val = 0) => Array(n).fill(val);
 ```
 
 ```js
diff --git a/snippets/isArray.md b/snippets/isArray.md
index ebe1efecc..def452a89 100644
--- a/snippets/isArray.md
+++ b/snippets/isArray.md
@@ -5,10 +5,9 @@ Checks if the given argument is an array.
 Use `Array.isArray()` to check if a value is classified as an array.
 
 ```js
-const isArray = val => !!val && Array.isArray(val);
+const isArray = val => Array.isArray(val);
 ```
 
 ```js
-isArray(null); // false
 isArray([1]); // true
 ```
diff --git a/snippets/isFunction.md b/snippets/isFunction.md
index e507bb9e5..0cf8ee580 100644
--- a/snippets/isFunction.md
+++ b/snippets/isFunction.md
@@ -9,7 +9,6 @@ const isFunction = val => typeof val === 'function';
 ```
 
 ```js
-isFunction(null); // false
 isFunction('x'); // false
 isFunction(x => x); // true
 ```
diff --git a/snippets/lcm.md b/snippets/lcm.md
index 4b560f29d..cbd86c264 100644
--- a/snippets/lcm.md
+++ b/snippets/lcm.md
@@ -1,6 +1,6 @@
 ### lcm
 
-Returns the least common multiple of two or more numbers/arrays.
+Returns the least common multiple of two or more numbers.
 
 Use the greatest common divisor (GCD) formula and `Math.abs()` to determine the least common multiple.
 The GCD formula uses recursion.
@@ -9,11 +9,11 @@ The GCD formula uses recursion.
 const lcm = (...arr) => {
   const gcd = (x, y) => (!y ? x : gcd(y, x % y));
   const _lcm = (x, y) => x * y / gcd(x, y);
-  return [].concat(...arr).reduce((a, b) => _lcm(a, b));
+  return [...arr].reduce((a, b) => _lcm(a, b));
 };
 ```
 
 ```js
 lcm(12, 7); // 84
-lcm([1, 3, 4], 5); // 60
+lcm(...[1, 3, 4, 5]); // 60
 ```
diff --git a/snippets/mask.md b/snippets/mask.md
index 7257e76fc..7cdf3d104 100644
--- a/snippets/mask.md
+++ b/snippets/mask.md
@@ -2,7 +2,7 @@
 
 Replaces all but the last `num` of characters with the specified mask character.
 
-Use `String.slice()` to grab the portion of the characters that need to be masked and use `String.replace()` with a regex to replace every character with the mask character.
+Use `String.slice()` to grab the portion of the characters that need to be masked and use `String.replace()` with a regexp to replace every character with the mask character.
 Concatenate the masked characters with the remaining unmasked portion of the string.
 Omit the second argument, `num`, to keep a default of `4` characters unmasked. If `num` is negative, the unmasked characters will be at the start of the string.
 Omit the third argument, `mask`, to use a default character of `'*'` for the mask.
diff --git a/snippets/negate.md b/snippets/negate.md
index b8e4b4ab4..9c621990e 100644
--- a/snippets/negate.md
+++ b/snippets/negate.md
@@ -2,7 +2,7 @@
 
 Negates a predicate function.
 
-Take a predicate function and apply `not` to it with its arguments.
+Take a predicate function and apply the not operator (`!`) to it with its arguments.
 
 ```js
 const negate = func => (...args) => !func(...args);
diff --git a/snippets/orderBy.md b/snippets/orderBy.md
index 5bed5a07e..fb8c99310 100644
--- a/snippets/orderBy.md
+++ b/snippets/orderBy.md
@@ -2,8 +2,8 @@
 
 Returns a sorted array of objects ordered by properties and orders.
 
-Uses a custom implementation of sort, that reduces the props array argument with a default value of 0, it uses destructuring to swap the properties position depending on the order passed.
-If no orders array is passed it sort by 'asc' by default.
+Uses `Array.sort()`, `Array.reduce()` on the `props` array with a default value of `0`, use array destructuring to swap the properties position depending on the order passed.
+If no `orders` array is passed it sort by `'asc'` by default.
 
 ```js
 const orderBy = (arr, props, orders) =>
diff --git a/snippets/palindrome.md b/snippets/palindrome.md
index e5d4601e4..4db143f65 100644
--- a/snippets/palindrome.md
+++ b/snippets/palindrome.md
@@ -2,8 +2,8 @@
 
 Returns `true` if the given string is a palindrome, `false` otherwise.
 
-Convert string `toLowerCase()` and use `replace()` to remove non-alphanumeric characters from it.
-Then, `split('')` into individual characters, `reverse()`, `join('')` and compare to the original, unreversed string, after converting it `tolowerCase()`.
+Convert string `String.toLowerCase()` and use `String.replace()` to remove non-alphanumeric characters from it.
+Then, `String.split('')` into individual characters, `Array.reverse()`, `String.join('')` and compare to the original, unreversed string, after converting it `String.tolowerCase()`.
 
 ```js
 const palindrome = str => {
diff --git a/snippets/repeatString.md b/snippets/repeatString.md
deleted file mode 100644
index 221883ecf..000000000
--- a/snippets/repeatString.md
+++ /dev/null
@@ -1,16 +0,0 @@
-### repeatString
-
-Repeats a string n times using `String.repeat()`
-
-If no string is provided the default is `""` and the default number of times is 2.
-
-```js
-const repeatString = (str = '', num = 2) => {
-  return num >= 0 ? str.repeat(num) : str;
-};
-```
-
-```js
-repeatString('abc', 3); // 'abcabcabc'
-repeatString('abc'); // 'abcabc'
-```
diff --git a/snippets/reverseString.md b/snippets/reverseString.md
index 95935d47c..befdd8bf5 100644
--- a/snippets/reverseString.md
+++ b/snippets/reverseString.md
@@ -2,13 +2,15 @@
 
 Reverses a string.
 
-Use `split('')` and `Array.reverse()` to reverse the order of the characters in the string.
-Combine characters to get a string using `join('')`.
+Use the spread operator (`...`) and `Array.reverse()` to reverse the order of the characters in the string.
+Combine characters to get a string using `String.join('')`.
 
 ```js
+
+
+
 const reverseString = str =>
-  str
-    .split('')
+  [..str]
     .reverse()
     .join('');
 ```
diff --git a/snippets/sdbm.md b/snippets/sdbm.md
index d64fd2f67..17231a9f2 100644
--- a/snippets/sdbm.md
+++ b/snippets/sdbm.md
@@ -1,8 +1,8 @@
 ### sbdm
 
-This algorithm is a simple hash-algorithm that hashes it input string `s` into a whole number.
+Hashes the input string into a whole number.
 
-Use `split('')` and `Array.reduce()` to create a hash of the input string, utilizing bit shifting.
+Use `String.split('')` and `Array.reduce()` to create a hash of the input string, utilizing bit shifting.
 
 ```js
 const sdbm = str => {
diff --git a/snippets/select.md b/snippets/select.md
index 6cb60448b..e000a3cec 100644
--- a/snippets/select.md
+++ b/snippets/select.md
@@ -1,6 +1,6 @@
 ### select
 
-Retrieve a property that indicated by the selector from an object.
+Retrieve a property indicated by the selector from an object.
 
 If the property does not exists returns `undefined`.
 
diff --git a/snippets/setStyle.md b/snippets/setStyle.md
index ef70e78ad..b85c5207c 100644
--- a/snippets/setStyle.md
+++ b/snippets/setStyle.md
@@ -2,10 +2,10 @@
 
 Sets the value of a CSS rule for the specified element.
 
-Use `element.style` to set the value of the CSS rule for the specified element to `value`.
+Use `element.style` to set the value of the CSS rule for the specified element to `val`.
 
 ```js
-const setStyle = (el, ruleName, value) => (el.style[ruleName] = value);
+const setStyle = (el, ruleName, val) => (el.style[ruleName] = val);
 ```
 
 ```js
diff --git a/snippets/shuffle.md b/snippets/shuffle.md
index 97b25e8cf..c5ee974d2 100644
--- a/snippets/shuffle.md
+++ b/snippets/shuffle.md
@@ -2,7 +2,7 @@
 
 Randomizes the order of the values of an array, returning a new array.
 
-Uses the Fisher-Yates algorithm to reorder the elements of the array, based on the [Lodash implementation](https://github.com/lodash/lodash/blob/b2ea6b1cd251796dcb5f9700c4911a7b6223920b/shuffle.js), but as a pure function.
+Uses the [Fisher-Yates algorithm](https://github.com/chalarangelo/30-seconds-of-code#shuffle) to reorder the elements of the array.
 
 ```js
 const shuffle = ([...arr]) => {
diff --git a/snippets/similarity.md b/snippets/similarity.md
index 7aade10ef..1736aebcd 100644
--- a/snippets/similarity.md
+++ b/snippets/similarity.md
@@ -2,7 +2,7 @@
 
 Returns an array of elements that appear in both arrays.
 
-Use `filter()` to remove values that are not part of `values`, determined using `includes()`.
+Use `Array.filter()` to remove values that are not part of `values`, determined using `Array.includes()`.
 
 ```js
 const similarity = (arr, values) => arr.filter(v => values.includes(v));
diff --git a/snippets/size.md b/snippets/size.md
index 1c3127929..04a5ff478 100644
--- a/snippets/size.md
+++ b/snippets/size.md
@@ -2,20 +2,20 @@
 
 Get size of arrays, objects or strings.
 
-Get type of `value` (`array`, `object` or `string`). 
-Use `length` property for arrays. 
-Use `length` or `size` value if available or number of keys for objects. 
-Use `size` of a [`Blob` object](https://developer.mozilla.org/en-US/docs/Web/API/Blob) created from `value` for strings.
+Get type of `val` (`array`, `object` or `string`). 
+Use `length` property for arrays.
+Use `length` or `size` value if available or number of keys for objects.
+Use `size` of a [`Blob` object](https://developer.mozilla.org/en-US/docs/Web/API/Blob) created from `val` for strings.
 
 Split strings into array of characters with `split('')` and return its length.
 
 ```js
-const size = value =>
-  Array.isArray(value)
-    ? value.length
-    : value && typeof value === 'object'
-      ? value.size || value.length || Object.keys(value).length
-      : typeof value === 'string' ? new Blob([value]).size : 0;
+const size = val =>
+  Array.isArray(val)
+    ? val.length
+    : val && typeof val === 'object'
+      ? val.size || val.length || Object.keys(val).length
+      : typeof val === 'string' ? new Blob([val]).size : 0;
 ```
 
 ```js
diff --git a/snippets/sortCharactersInString.md b/snippets/sortCharactersInString.md
index e9b8c50ae..49c808cd9 100644
--- a/snippets/sortCharactersInString.md
+++ b/snippets/sortCharactersInString.md
@@ -2,14 +2,10 @@
 
 Alphabetically sorts the characters in a string.
 
-Split the string using `split('')`, `Array.sort()` utilizing `localeCompare()`, recombine using `join('')`.
+Use the spread operator (`...`), `Array.sort()` and  `String.localeCompare()` to sort the characters in `str`, recombine using `String.join('')`.
 
 ```js
-const sortCharactersInString = str =>
-  str
-    .split('')
-    .sort((a, b) => a.localeCompare(b))
-    .join('');
+const sortCharactersInString = str => [...str].sort((a, b) => a.localeCompare(b)).join('');
 ```
 
 ```js
diff --git a/snippets/sum.md b/snippets/sum.md
index a69aa3d4f..0c03ab736 100644
--- a/snippets/sum.md
+++ b/snippets/sum.md
@@ -5,9 +5,9 @@ Returns the sum of two or more numbers/arrays.
 Use `Array.reduce()` to add each value to an accumulator, initialized with a value of `0`.
 
 ```js
-const sum = (...arr) => [].concat(...arr).reduce((acc, val) => acc + val, 0);
+const sum = (...arr) => [...arr].reduce((acc, val) => acc + val, 0);
 ```
 
 ```js
-sum([1, 2, 3, 4]); // 10
+sum(...[1, 2, 3, 4]); // 10
 ```
diff --git a/snippets/tail.md b/snippets/tail.md
index ed2a1458b..49cba196c 100644
--- a/snippets/tail.md
+++ b/snippets/tail.md
@@ -2,7 +2,7 @@
 
 Returns all elements in an array except for the first one.
 
-Return `arr.slice(1)` if the array's `length` is more than `1`, otherwise, return the whole array.
+Return `Array.slice(1)` if the array's `length` is more than `1`, otherwise, return the whole array.
 
 ```js
 const tail = arr => (arr.length > 1 ? arr.slice(1) : arr);
diff --git a/snippets/toCamelCase.md b/snippets/toCamelCase.md
index 489c045f3..393082f77 100644
--- a/snippets/toCamelCase.md
+++ b/snippets/toCamelCase.md
@@ -2,8 +2,7 @@
 
 Converts a string to camelcase.
 
-Break the string into words and combine them capitalizing the first letter of each word.
-For more detailed explanation of this Regex, [visit this Site](https://regex101.com/r/bMCgAB/1).
+Break the string into words and combine them capitalizing the first letter of each word, using a regexp.
 
 ```js
 const toCamelCase = str => {
diff --git a/snippets/toKebabCase.md b/snippets/toKebabCase.md
index 0c506eb21..4e456982e 100644
--- a/snippets/toKebabCase.md
+++ b/snippets/toKebabCase.md
@@ -2,8 +2,7 @@
 
 Converts a string to kebab case.
 
-Break the string into words and combine them using `-` as a separator.
-For more detailed explanation of this Regex, [visit this Site](https://regex101.com/r/bMCgAB/1).
+Break the string into words and combine them adding `-` as a separator, using a regexp.
 
 ```js
 const toKebabCase = str =>
diff --git a/snippets/toSnakeCase.md b/snippets/toSnakeCase.md
index 983095f47..d21d40222 100644
--- a/snippets/toSnakeCase.md
+++ b/snippets/toSnakeCase.md
@@ -2,8 +2,7 @@
 
 Converts a string to snake case.
 
-Break the string into words and combine them using `_` as a separator.
-For more detailed explanation of this Regex, [visit this Site](https://regex101.com/r/bMCgAB/1).
+Break the string into words and combine them adding `_` as a separator, using a regexp.
 
 ```js
 const toSnakeCase = str =>
diff --git a/snippets/tomorrow.md b/snippets/tomorrow.md
index 5b4614424..3bd5a6412 100644
--- a/snippets/tomorrow.md
+++ b/snippets/tomorrow.md
@@ -1,7 +1,7 @@
 ### tomorrow
 
 Results in a string representation of tomorrow's date.
-Use `new Date()` to get today's date, adding `86400000` of seconds to it(24 hours), using `toISOString` to convert Date object to string.
+Use `new Date()` to get today's date, adding `86400000` of seconds to it(24 hours), using `Date.toISOString()` to convert Date object to string.
 
 ```js
 const tomorrow = () => new Date(new Date().getTime() + 86400000).toISOString().split('T')[0];
diff --git a/snippets/truncateString.md b/snippets/truncateString.md
index faded5500..951343be9 100644
--- a/snippets/truncateString.md
+++ b/snippets/truncateString.md
@@ -3,7 +3,7 @@
 Truncates a string up to a specified length.
 
 Determine if the string's `length` is greater than `num`.
-Return the string truncated to the desired length, with `...` appended to the end or the original string.
+Return the string truncated to the desired length, with `'...'` appended to the end or the original string.
 
 ```js
 const truncateString = (str, num) =>
diff --git a/snippets/validateNumber.md b/snippets/validateNumber.md
index e41370a1e..17a5987d1 100644
--- a/snippets/validateNumber.md
+++ b/snippets/validateNumber.md
@@ -2,7 +2,7 @@
 
 Returns `true` if the given value is a number, `false` otherwise.
 
-Use `!isNaN` in combination with `parseFloat()` to check if the argument is a number.
+Use `!isNaN()` in combination with `parseFloat()` to check if the argument is a number.
 Use `isFinite()` to check if the number is finite.
 Use `Number()` to check if the coercion holds.
 
diff --git a/snippets/words.md b/snippets/words.md
index bc5f9cee3..425bfbf71 100644
--- a/snippets/words.md
+++ b/snippets/words.md
@@ -2,8 +2,8 @@
 
 Converts a given string into an array of words.
 
-Use `String.split()` with a supplied pattern (defaults to non-alpha as a regex) to convert to an array of strings. Use `Array.filter()` to remove any empty strings.
-Omit the second argument to use the default regex.
+Use `String.split()` with a supplied pattern (defaults to non-alpha as a regexp) to convert to an array of strings. Use `Array.filter()` to remove any empty strings.
+Omit the second argument to use the default regexp.
 
 ```js
 const words = (str, pattern = /[^a-zA-Z-]+/) => str.split(pattern).filter(Boolean);
diff --git a/snippets/JSONToDate.md b/snippets_archive/JSONToDate.md
similarity index 100%
rename from snippets/JSONToDate.md
rename to snippets_archive/JSONToDate.md
diff --git a/snippets/collatz.md b/snippets_archive/collatz.md
similarity index 100%
rename from snippets/collatz.md
rename to snippets_archive/collatz.md
diff --git a/snippets/factors.md b/snippets_archive/factors.md
similarity index 100%
rename from snippets/factors.md
rename to snippets_archive/factors.md
diff --git a/snippets/fibonacciCountUntilNum.md b/snippets_archive/fibonacciCountUntilNum.md
similarity index 100%
rename from snippets/fibonacciCountUntilNum.md
rename to snippets_archive/fibonacciCountUntilNum.md
diff --git a/snippets/fibonacciUntilNum.md b/snippets_archive/fibonacciUntilNum.md
similarity index 100%
rename from snippets/fibonacciUntilNum.md
rename to snippets_archive/fibonacciUntilNum.md
diff --git a/snippets/howManyTimes.md b/snippets_archive/howManyTimes.md
similarity index 100%
rename from snippets/howManyTimes.md
rename to snippets_archive/howManyTimes.md
diff --git a/snippets/isArmstrongNumber.md b/snippets_archive/isArmstrongNumber.md
similarity index 100%
rename from snippets/isArmstrongNumber.md
rename to snippets_archive/isArmstrongNumber.md
diff --git a/snippets/quickSort.md b/snippets_archive/quickSort.md
similarity index 100%
rename from snippets/quickSort.md
rename to snippets_archive/quickSort.md
diff --git a/snippets/solveRPN.md b/snippets_archive/solveRPN.md
similarity index 100%
rename from snippets/solveRPN.md
rename to snippets_archive/solveRPN.md
diff --git a/snippets/speechSynthesis.md b/snippets_archive/speechSynthesis.md
similarity index 100%
rename from snippets/speechSynthesis.md
rename to snippets_archive/speechSynthesis.md
diff --git a/static-parts/README-start.md b/static-parts/README-start.md
index 105049b76..fc7589866 100644
--- a/static-parts/README-start.md
+++ b/static-parts/README-start.md
@@ -18,7 +18,7 @@
 
 ⚠️ **WARNING:** Snippets are not production ready.
 
-You can find a package with all the snippets on [npm](https://www.npmjs.com/package/30-seconds-of-code). 
+You can find a package with all the snippets on [npm](https://www.npmjs.com/package/30-seconds-of-code).
 
 ```
 npm install 30-seconds-of-code
diff --git a/static-parts/index-start.html b/static-parts/index-start.html
index 66e981ad9..00bbe441b 100644
--- a/static-parts/index-start.html
+++ b/static-parts/index-start.html
@@ -14,13 +14,17 @@
     <link rel="icon" type="image/png" href="favicon.png">
     <script>
       const search = (node) => {
+        let matchingTags = [];
         Array.from(node.parentElement.parentElement.getElementsByTagName('a')).forEach(x => {
-          x.style.display = x.getAttribute("href").toUpperCase().indexOf(node.value.toUpperCase()) + 1  ? '' : 'none'
+          let data = [x.innerText.toLowerCase(), ...x.getAttribute('tags').split(',')].map(v => !!(v.indexOf(node.value.toLowerCase()) + 1));
+          if(data.includes(true)){
+            x.style.display = '';
+            matchingTags.push(x.getAttribute('tags').split(',')[0]);
+          }
+          else x.style.display = 'none';
         });
-        Array.from( node.parentElement.parentElement.children )
-        .filter( x => !( x.tagName == 'A' && x.style.display == 'none' ) )
-        .forEach( ( element, index, source) => {
-           element.style.display = (element.tagName == 'H3' && index + 1 == source.length ? 'none' : element.tagName == 'H3' && source[index + 1].tagName == 'H3' ? 'none'  : '')
+        Array.from(node.parentElement.parentElement.getElementsByTagName('h3')).forEach(x => {
+          x.style.display = matchingTags.includes(x.innerText.toLowerCase()) ? '' : 'none';
         })
       }
       function loader() {
diff --git a/tag_database b/tag_database
index 212c1a883..58ec130d5 100644
--- a/tag_database
+++ b/tag_database
@@ -1,187 +1,176 @@
-anagrams:string
-arrayToHtmlList:browser
-average:math
+anagrams:string,recursion
+arrayToHtmlList:browser,array
+average:math,array
 bottomVisible:browser
 byteSize:string
-call:adapter
-capitalize:string
-capitalizeEveryWord:string
+call:adapter,function
+capitalize:string,array
+capitalizeEveryWord:string,regexp
 chainAsync:function
 chunk:array
 clampNumber:math
-cleanObj:object
-cloneRegExp:utility
+cleanObj:object,json
+cloneRegExp:utility,regexp
 coalesce:utility
 coalesceFactory:utility
-collatz:math
-collectInto:adapter
+collectInto:adapter,function,array
 compact:array
 compose:function
-copyToClipboard:browser
+copyToClipboard:browser,string,advanced
 countOccurrences:array
 countVowels:string
+currentURL:browser,url
+curry:function,recursion
 createEventHub:browser,utility,advanced
-currentURL:browser
-curry:function
-deepFlatten:array
+deepFlatten:array,recursion
 defer:function
 detectDeviceType:browser
-difference:array
-differenceWith:array
-digitize:math
+difference:array,math
+differenceWith:array,function
+digitize:math,array
 distance:math
 distinctValuesOfArray:array
-dropElements:array
+dropElements:array,function
 dropRight:array
 elementIsVisibleInViewport:browser
-elo:math
-escapeHTML:string
-escapeRegExp:string
+elo:math,array,advanced
+escapeHTML:string,browser,regexp
+escapeRegExp:string,regexp
 everyNth:array
-extendHex:utility
-factorial:math
-factors:math
-fibonacci:math
-fibonacciCountUntilNum:math
-fibonacciUntilNum:math
+extendHex:utility,string
+factorial:math,recursion
+fibonacci:math,array
 filterNonUnique:array
 flatten:array
-flattenDepth:array
-flip:adapter
-formatDuration:date
+flattenDepth:array,recursion
+flip:adapter,function
+formatDuration:date,math,string,utility
 fromCamelCase:string
-functionName:function
-gcd:math
+functionName:function,utility
+gcd:math,recursion
 geometricProgression:math
 getDaysDiffBetweenDates:date
 getScrollPosition:browser
-getStyle:browser
-getType:utility
-getURLParameters:utility
+getStyle:browser,css
+getType:type
+getURLParameters:utility,browser,string,url
 groupBy:array
 hammingDistance:math
-hasClass:browser
+hasClass:browser,css
 hasFlags:node
 head:array
-hexToRGB:utility
-hide:browser
-howManyTimes:math
-httpsRedirect:browser
+hexToRGB:utility,string,math,advanced
+hide:browser,css
+httpsRedirect:browser,url
 initial:array
 initialize2DArray:array
-initializeArrayWithRange:array
-initializeArrayWithValues:array
+initializeArrayWithRange:array,math
+initializeArrayWithValues:array,amth
 inRange:math
-intersection:array
+intersection:array,math
 invertKeyValues:object
-isAbsoluteURL:string
-isArmstrongNumber:math
-isArray:utility
-isArrayLike:utility
-isBoolean:utility
+isAbsoluteURL:string,utility,browser,url
+isArray:type,array
+isArrayLike:type,array
+isBoolean:type
 isDivisible:math
 isEven:math
-isFunction:utility
-isNull:utility
-isNumber:utility
+isFunction:type,function
+isNull:type
+isNumber:type,math
 isPrime:math
-isPrimitive:utility
-isPromiseLike:utility
+isPrimitive:type,function,array,string
+isPromiseLike:type,function,promise
 isSorted:array
-isString:utility
-isSymbol:utility
+isString:type,string
+isSymbol:type
 isTravisCI:node
-isValidJSON:utility
+isValidJSON:type,json
 join:array
-JSONToDate:date
-JSONToFile:node
+JSONToFile:node,json
 last:array
-lcm:math
+lcm:math,recursion
 lowercaseKeys:object
-luhnCheck:math
-mapObject:array
-mask:string
-maxN:array
-median:math
+luhnCheck:math,utility
+mapObject:array,object
+mask:string,utility,regexp
+maxN:array,math
+median:math,array
 memoize:function
-minN:array
-negate:logic
+minN:array,amth
+negate:logic,function
 nthElement:array
-objectFromPairs:object
-objectToPairs:object
+objectFromPairs:object,array
+objectToPairs:object,array
 once:function
-onUserInputChange:browser
-orderBy:object
+onUserInputChange:browser,advanced
+orderBy:object,array
 palindrome:string
 percentile:math
 pick:array
-pipeFunctions:adapter
+pipeFunctions:adapter,function
 pluralize:string
 powerset:math
-prettyBytes:utility
-primes:math
-promisify:adapter
+prettyBytes:utility,string,math
+primes:math,array
+promisify:adapter,function,promise
 pull:array
 pullAtIndex:array
 pullAtValue:array
-quickSort:array
-randomHexColorCode:utility
-randomIntegerInRange:math
-randomNumberInRange:math
-readFileLines:node
-redirect:browser
+randomHexColorCode:utility,random
+randomIntegerInRange:math,utility,random
+randomNumberInRange:math,utility,random
+readFileLines:node,array,string
+redirect:browser,url
 reducedFilter:array
 remove:array
-repeatString:string
-reverseString:string
+reverseString:string,array
 RGBToHex:utility
 round:math
-runAsync:browser
-runPromisesInSeries:function
-sample:array
-sampleSize:array
+runAsync:browser,function,advanced,promise,url
+runPromisesInSeries:function,promise
+sample:array,random
+sampleSize:array,random
 scrollToTop:browser
-sdbm:utility
+sdbm:math,utility
 select:object
 setStyle:browser
 shallowClone:object
-show:browser
-shuffle:array
-similarity:array
-size:object
-sleep:function
-solveRPN:math
+show:browser,css
+shuffle:array,random
+similarity:array,math
+size:object,array,string
+sleep:function,promise
 sortCharactersInString:string
-sortedIndex:array
-speechSynthesis:browser
+sortedIndex:array,math
 splitLines:string
 spreadOver:adapter
-standardDeviation:math
-sum:math
+standardDeviation:math,array
+sum:math,array
 sumPower:math
-symmetricDifference:array
+symmetricDifference:array,math
 tail:array
 take:array
 takeRight:array
 timeTaken:utility
-toCamelCase:string
-toDecimalMark:utility
-toEnglishDate:date
+toCamelCase:string,regexp
+toDecimalMark:utility,math
+toEnglishDate:date,string
 toggleClass:browser
-toKebabCase:string
+toKebabCase:string,regexp
 tomorrow:date
-toOrdinalSuffix:utility
-toSnakeCase:string
+toOrdinalSuffix:utility,math
+toSnakeCase:string,regexp
 truncateString:string
-truthCheckCollection:object
-unescapeHTML:string
-union:array
-untildify:node
-UUIDGeneratorBrowser:browser
-UUIDGeneratorNode:node
-validateNumber:utility
+truthCheckCollection:object,logic,array
+unescapeHTML:string,browser
+union:array,math
+untildify:node,string
+UUIDGeneratorBrowser:browser,utility,random
+UUIDGeneratorNode:node,utility,random
+validateNumber:utility,math
 without:array
-words:string
-yesNo:utility
+words:string,regexp
+yesNo:utility,regexp
 zip:array
-zipObject:array
+zipObject:array,object