Merge remote-tracking branch 'origin/snippet-restructuring' into snippet-restructuring

CONTRIBUTING.md

@@ -28,7 +28,7 @@ Here's what you can do to help:
   - Use ES6 notation to define your function. For example `const myFunction = ( arg1, arg2 ) => { }`.
   - Please use Javacript [Semi-Standard Style](https://github.com/Flet/semistandard).
   - Try to keep your snippets' code short and to the point. Use modern techniques and features. Make sure to test your code before submitting.
-  - All snippets must be followed by one (more if necessary) test case after the code, on a new line, in the form of a comment, along with the expected output. The syntax for this is `myFunction('testInput') -> 'testOutput'`. Use multiline comments only if necessary.
+  - All snippets must be followed by one (more if necessary) test case after the code, in a new block enclosed inside ` ```js ` and ` ``` `. The syntax for this is `myFunction('testInput') // 'testOutput'`. Use multiline examples only if necessary.
   - Try to make your function name unique, so that it does not conflict with existing snippets.
   - Snippet functions do not have to handle errors in input, unless it's necessary (e.g. a mathematical function that cannot be extended to negative numbers should handle negative input appropriately).
 - Snippets should be short (usually below 10 lines). If your snippet is longer than that, you can still submit it, and we can help you shorten it or figure out ways to improve it.

scripts/lint-script.js

@@ -25,7 +25,8 @@ try {
     console.time(`Linter (${snippet})`);
     // Synchronously read data from the snippet, get the code, write it to a temporary file
     let snippetData = fs.readFileSync(path.join(snippetsPath,snippet),'utf8');
-    let originalCode = snippetData.slice(snippetData.indexOf('```js')+5,snippetData.lastIndexOf('```'));
+    let codeStart = snippetData.indexOf('```js'), codeEnd = snippetData.search(/```[\n\r\s]+```js/g);
+    let originalCode = snippetData.slice(codeStart+5,codeEnd);
     while(jobCounter >= 20){
       setTimeout(()=>{},1000);
     }
@@ -36,7 +37,7 @@ try {
     cp.exec(`semistandard "${tempSnippet}.temp.js" --fix`,{},(error, stdOut, stdErr) => {
       jobCounter += 1;
       let lintedCode = fs.readFileSync(`${tempSnippet}.temp.js`,'utf8');
-      fs.writeFile(path.join(snippetsPath,snippet), `${snippetData.slice(0, snippetData.indexOf('```js')+5)+lintedCode+'```\n'}`);
+      fs.writeFile(path.join(snippetsPath,snippet), `${snippetData.slice(0, codeStart+5)+lintedCode+snippetData.slice(codeEnd)}`);
       fs.unlink(`${tempSnippet}.temp.js`);
       // Log a success message
       console.log(`${chalk.green('SUCCESS!')} Linted snippet: ${snippet}`);

snippet-template.md

@@ -10,5 +10,5 @@ const functionName = arguments =>
 ```
 
 ```js
-functionName()
+functionName('sampleInput') // 'sampleOutput'
 ```

snippets/JSONToFile.md

@@ -6,7 +6,7 @@ Use `fs.writeFile()`, template literals and `JSON.stringify()` to write a `json`
 
 ```js
 const fs = require('fs');
-const JSONToFile = (obj, filename) => fs.writeFile(`${filename}.json`, JSON.stringify(obj, null, 2))
+const JSONToFile = (obj, filename) => fs.writeFile(`${filename}.json`, JSON.stringify(obj, null, 2));
 ```
 
 ```js

snippets/arrayGcd.md

@@ -8,7 +8,7 @@ Use `Array.reduce()` and the `gcd` formula (uses recursion) to calculate the gre
 const arrayGcd = arr => {
   const gcd = (x, y) => !y ? x : gcd(y, x % y);
   return arr.reduce((a, b) => gcd(a, b));
-}
+};
 ```
 
 ```js

snippets/arrayLcm.md

@@ -9,7 +9,7 @@ const arrayLcm = arr => {
   const gcd = (x, y) => !y ? x : gcd(y, x % y);
   const lcm = (x, y) => (x * y) / gcd(x, y);
   return arr.reduce((a, b) => lcm(a, b));
-}
+};
 ```
 
 ```js

snippets/arrayToHtmlList.md

@@ -5,7 +5,7 @@ Converts the given array elements into `<li>` tags and appends them to the list
 Use `Array.map()` and `document.querySelector()` to create a list of html tags.
 
 ```js
-const arrayToHtmlList = (arr, listID) => arr.map(item => document.querySelector("#"+listID).innerHTML+=`<li>${item}</li>`);
+const arrayToHtmlList = (arr, listID) => arr.map(item => document.querySelector('#' + listID).innerHTML += `<li>${item}</li>`);
 ```
 
 ```js

snippets/coalesce.md

@@ -5,7 +5,7 @@ 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(_))
+const coalesce = (...args) => args.find(_ => ![undefined, null].includes(_));
 ```
 
 ```js

snippets/detectDeviceType.md

@@ -5,7 +5,7 @@ Detects wether the website is being opened in a mobile device or a desktop/lapto
 Use a regular expression to test the `navigator.userAgent` property to figure out if the device is a mobile device or a desktop/laptop.
 
 ```js
-const detectDeviceType = () => /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) ? "Mobile" : "Desktop";
+const detectDeviceType = () => /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) ? 'Mobile' : 'Desktop';
 ```
 
 ```js

snippets/differenceWith.md

@@ -5,7 +5,7 @@ Filters out all values from an array for which the comparator function does not
 Use `Array.filter()` and `Array.find()` to find the appropriate values.
 
 ```js
-const differenceWith = (arr, val, comp) => arr.filter(a => !val.find(b => comp(a, b)))
+const differenceWith = (arr, val, comp) => arr.filter(a => !val.find(b => comp(a, b)));
 ```
 
 ```js

snippets/extendHex.md

@@ -6,7 +6,7 @@ Use `Array.map()`, `split()` and `Array.join()` to join the mapped array for con
 `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('')
+  '#' + shortHex.slice(shortHex.startsWith('#') ? 1 : 0).split('').map(x => x + x).join('');
 ```
 
 ```js

snippets/fibonacciUntilNum.md

@@ -10,7 +10,7 @@ Uses a mathematical formula to calculate the length of the array required.
 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), []);
-}
+};
 ```
 
 ```js

snippets/inRange.md

@@ -9,7 +9,7 @@ If the second parameter, `end`, is not specified, the range is considered to be
 const inRange = (n, start, end = null) => {
   if (end && start > end) end = [start, start = end][0];
   return (end == null) ? (n >= 0 && n < start) : (n >= start && n < end);
-}
+};
 ```
 
 ```js

snippets/isArmstrongNumber.md

@@ -6,7 +6,7 @@ Convert the given number into an array of digits. Use `Math.pow()` to get the ap
 
 ```js
 const isArmstrongNumber = digits =>
-  ( arr => arr.reduce( ( a, d ) => a + Math.pow( parseInt( d ), arr.length ), 0 ) == digits ? true : false )( ( digits+'' ).split( '' ) );
+  (arr => arr.reduce((a, d) => a + Math.pow(parseInt(d), arr.length), 0) == digits)((digits + '').split(''));
 ```
 
 ```js

snippets/palindrome.md

@@ -9,7 +9,7 @@ Then, `split('')` into individual characters, `reverse()`, `join('')` and compar
 const palindrome = str => {
   const s = str.toLowerCase().replace(/[\W_]/g, '');
   return s === s.split('').reverse().join('');
-}
+};
 ```
 
 ```js

snippets/primes.md

@@ -11,7 +11,7 @@ const primes = num => {
     numsTillSqroot = Array.from({length: sqroot - 1}).map((x, i) => i + 2);
   numsTillSqroot.forEach(x => arr = arr.filter(y => ((y % x) !== 0) || (y == x)));
   return arr;
-}
+};
 ```
 
 ```js

snippets/pullAtIndex.md

@@ -10,11 +10,11 @@ Use `Array.push()` to keep track of pulled values
 const pullAtIndex = (arr, pullArr) => {
   let removed = [];
   let pulled = arr.map((v, i) => pullArr.includes(i) ? removed.push(v) : v)
-                  .filter((v, i) => !pullArr.includes(i))
+                  .filter((v, i) => !pullArr.includes(i));
   arr.length = 0;
   pulled.forEach(v => arr.push(v));
   return removed;
-}
+};
 ```
 
 ```js

snippets/pullAtValue.md

@@ -14,7 +14,7 @@ const pullAtValue = (arr, pullArr) => {
   arr.length = 0;
   mutateTo.forEach(v => arr.push(v));
   return removed;
-}
+};
 ```
 
 ```js

snippets/randomHexColorCode.md

@@ -5,8 +5,12 @@ Generates a random hexadecimal color code.
 Use `Math.random` to generate a random 24-bit(6x4bits) hexadecimal number. Use bit shifting and then convert it to an hexadecimal String using `toString(16)`.
 
 ```js
+<<<<<<< HEAD
 const randomHexColorCode = () => '#'+(Math.random()*0xFFFFFF<<0).toString(16);
 };
+=======
+const randomHexColorCode = () => '#' + (Math.random() * 0xFFFFFF << 0).toString(16);
+>>>>>>> snippet-restructuring
 ```
 
 ```js

snippets/repeatString.md

@@ -5,9 +5,9 @@ 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) => {
+const repeatString = (str = '', num = 2) => {
   return num >= 0 ? str.repeat(num) : str;
-}
+};
 ```
 
 ```js

snippets/symmetricDifference.md

@@ -8,7 +8,7 @@ Create a `Set` from each array, then use `Array.filter()` on each of them to onl
 const symmetricDifference = (a, b) => {
   const sA = new Set(a), sB = new Set(b);
   return [...a.filter(x => !sB.has(x)), ...b.filter(x => !sA.has(x))];
-}
+};
 ```
 
 ```js

snippets/toCamelCase.md

@@ -10,8 +10,8 @@ const toCamelCase = str => {
   let s = str && str.match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
     .map(x => x.slice(0, 1).toUpperCase() + x.slice(1).toLowerCase())
     .join('');
-  return s.slice(0,1).toLowerCase() + s.slice(1)
+  return s.slice(0, 1).toLowerCase() + s.slice(1);
-  }
+};
 ```
 
 ```js

snippets/toDecimalMark.md

@@ -3,7 +3,7 @@
 Use `toLocaleString()` to convert a float-point arithmetic to the [Decimal mark](https://en.wikipedia.org/wiki/Decimal_mark) form. It makes a comma separated string from a number.
 
  ```js
-const toDecimalMark = num => num.toLocaleString("en-US");
+const toDecimalMark = num => num.toLocaleString('en-US');
 ```
 
 ```js

snippets/zip.md

@@ -11,8 +11,8 @@ const zip = (...arrays) => {
   const maxLength = Math.max(...arrays.map(x => x.length));
   return Array.from({length: maxLength}).map((_, i) => {
     return Array.from({length: arrays.length}, (_, k) => arrays[k][i]);
-  })
+  });
-}
+};
 ```
 
 ```js

snippets/zipObject.md

@@ -5,7 +5,7 @@ Given an array of valid property identifiers and an array of values, return an o
 Since an object can have undefined values but not undefined property pointers, the array of properties is used to decide the structure of the resulting object using `Array.reduce()`.
 
 ```js
-const zipObject = ( props, values ) => props.reduce( ( obj, prop, index ) => ( obj[prop] = values[index], obj ), {} )
+const zipObject = (props, values) => props.reduce((obj, prop, index) => (obj[prop] = values[index], obj), {});
 ```
 
 ```js