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30secondsofcode
2020-04-16 08:54:37 +00:00
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commit f40bb25ad0
16 changed files with 85 additions and 79 deletions
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28
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40
snippet_data/snippets.json
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@ -631,7 +631,7 @@
"codeBlocks": {
"es6": "const celsiusToFahrenheit = degrees => 1.8 * degrees + 32;",
"es5": "var celsiusToFahrenheit = function celsiusToFahrenheit(degrees) {\n return 1.8 * degrees + 32;\n};",
"example": "celsiusToFahrenheit(33) // 91.4"
"example": "celsiusToFahrenheit(33); // 91.4"
},
"tags": [
"math",
@ -639,7 +639,7 @@
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@ -2142,7 +2142,7 @@
"fileName": "fahrenheitToCelsius.md",
"text": "Converts Fahrenheit to Celsius.\n\nFollows the conversion formula `C = (F - 32) * 5/9`.\n\n",
"codeBlocks": {
"es6": "const fahrenheitToCelsius = degrees => (degrees - 32) * 5/9;",
"es6": "const fahrenheitToCelsius = degrees => (degrees - 32) * 5 / 9;",
"es5": "var fahrenheitToCelsius = function fahrenheitToCelsius(degrees) {\n return (degrees - 32) * 5 / 9;\n};",
"example": "fahrenheitToCelsius(32); // 0"
},
@ -2152,7 +2152,7 @@
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@ -3301,9 +3301,9 @@
"fileName": "httpPut.md",
"text": "Makes a `PUT` request to the passed URL.\n\nUse `XMLHttpRequest` web api to make a `put` request to the given `url`.\nSet the value of an `HTTP` request header with `setRequestHeader` method.\nHandle the `onload` event, by running the provided `callback` function.\nHandle the `onerror` event, by running the provided `err` function.\nOmit the last argument, `err` to log the request to the console's error stream by default.\n\n",
"codeBlocks": {
"es6": "const httpPut = (url, data, callback, err = console.error) => {\n const request = new XMLHttpRequest();\n request.open(\"PUT\", url, true);\n request.setRequestHeader('Content-type','application/json; charset=utf-8');\n request.onload = () => callback(request);\n request.onerror = () => err(request);\n request.send(data);\n};",
"es5": "var httpPut = function httpPut(url, data, callback) {\n var err = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : console.error;\n var request = new XMLHttpRequest();\n request.open(\"PUT\", url, true);\n request.setRequestHeader('Content-type', 'application/json; charset=utf-8');\n\n request.onload = function () {\n return callback(request);\n };\n\n request.onerror = function () {\n return err(request);\n };\n\n request.send(data);\n};",
"example": "const password = \"fooBaz\";\nconst data = JSON.stringify({\n id: 1,\n title: 'foo',\n body: 'bar',\n userId: 1\n});\nhttpPut('https://jsonplaceholder.typicode.com/posts/1', data, request => {\n console.log(request.responseText);\n}); /*\nLogs: {\n id: 1,\n title: 'foo',\n body: 'bar',\n userId: 1\n}\n*/"
"es6": "const httpPut = (url, data, callback, err = console.error) => {\n const request = new XMLHttpRequest();\n request.open('PUT', url, true);\n request.setRequestHeader('Content-type', 'application/json; charset=utf-8');\n request.onload = () => callback(request);\n request.onerror = () => err(request);\n request.send(data);\n};",
"es5": "var httpPut = function httpPut(url, data, callback) {\n var err = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : console.error;\n var request = new XMLHttpRequest();\n request.open('PUT', url, true);\n request.setRequestHeader('Content-type', 'application/json; charset=utf-8');\n\n request.onload = function () {\n return callback(request);\n };\n\n request.onerror = function () {\n return err(request);\n };\n\n request.send(data);\n};",
"example": "const password = 'fooBaz';\nconst data = JSON.stringify({\n id: 1,\n title: 'foo',\n body: 'bar',\n userId: 1\n});\nhttpPut('https://jsonplaceholder.typicode.com/posts/1', data, request => {\n console.log(request.responseText);\n}); /*\nLogs: {\n id: 1,\n title: 'foo',\n body: 'bar',\n userId: 1\n}\n*/"
},
"tags": [
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@ -3313,7 +3313,7 @@
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@ -6425,7 +6425,7 @@
"codeBlocks": {
"es6": "const pipeAsyncFunctions = (...fns) => arg => fns.reduce((p, f) => p.then(f), Promise.resolve(arg));",
"es5": "var pipeAsyncFunctions = function pipeAsyncFunctions() {\n for (var _len = arguments.length, fns = new Array(_len), _key = 0; _key < _len; _key++) {\n fns[_key] = arguments[_key];\n }\n\n return function (arg) {\n return fns.reduce(function (p, f) {\n return p.then(f);\n }, Promise.resolve(arg));\n };\n};",
"example": "const sum = pipeAsyncFunctions(\n x => x + 1,\n x => new Promise(resolve => setTimeout(() => resolve(x + 2), 1000)),\n x => x + 3,\n async x => (await x) + 4\n);\n(async () => {\n console.log(await sum(5)); // 15 (after one second)\n})();"
"example": "const sum = pipeAsyncFunctions(\n x => x + 1,\n x => new Promise(resolve => setTimeout(() => resolve(x + 2), 1000)),\n x => x + 3,\n async x => (await x) + 4\n);\n(async() => {\n console.log(await sum(5)); // 15 (after one second)\n})();"
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"tags": [
"function",
@ -6434,7 +6434,7 @@
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2
snippets/celsiusToFahrenheit.md
View File

@ -12,5 +12,5 @@ const celsiusToFahrenheit = degrees => 1.8 * degrees + 32;
```
```js
celsiusToFahrenheit(33) // 91.4
celsiusToFahrenheit(33); // 91.4
```

3
snippets/fahrenheitToCelsius.md
View File

@ -8,7 +8,8 @@ Converts Fahrenheit to Celsius.
Follows the conversion formula `C = (F - 32) * 5/9`.
```js
const fahrenheitToCelsius = degrees => (degrees - 32) * 5/9;
const fahrenheitToCelsius = degrees => (degrees - 32) * 5 / 9;
```
```js

1
snippets/getMeridiemSuffixOfInteger.md
View File

@ -8,6 +8,7 @@ Converts an integer to a suffixed string, adding `am` or `pm` based on its value
Use the modulo operator (`%`) and conditional checks to transform an integer to a stringified 12-hour format with meridiem suffix.
```js
const getMeridiemSuffixOfInteger = num =>
num === 0 || num === 24
? 12 + 'am'

8
snippets/httpPut.md
View File

@ -12,10 +12,11 @@ Handle the `onerror` event, by running the provided `err` function.
Omit the last argument, `err` to log the request to the console's error stream by default.
```js
const httpPut = (url, data, callback, err = console.error) => {
const request = new XMLHttpRequest();
request.open("PUT", url, true);
request.setRequestHeader('Content-type','application/json; charset=utf-8');
request.open('PUT', url, true);
request.setRequestHeader('Content-type', 'application/json; charset=utf-8');
request.onload = () => callback(request);
request.onerror = () => err(request);
request.send(data);
@ -23,7 +24,8 @@ const httpPut = (url, data, callback, err = console.error) => {
```
```js
const password = "fooBaz";
const password = 'fooBaz';
const data = JSON.stringify({
id: 1,
title: 'foo',

1
snippets/isLeapYear.md
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@ -8,7 +8,6 @@ Returns `true` if the given `year` is a leap year, `false` otherwise.
Use `new Date()`, setting the date to February 29th of the given `year` and use `Date.prototype.getMonth()` to check if the month is equal to `1`.
```js
const isLeapYear = year => new Date(year, 1, 29).getMonth() === 1;
```

1
snippets/join.md
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@ -11,6 +11,7 @@ Omit the second argument, `separator`, to use a default separator of `','`.
Omit the third argument, `end`, to use the same value as `separator` by default.
```js
const join = (arr, separator = ',', end = separator) =>
arr.reduce(
(acc, val, i) =>

1
snippets/objectToQueryString.md
View File

@ -10,6 +10,7 @@ Determine the `symbol` to be either `?` or `&` based on the `length` of `querySt
Return the `queryString` or an empty string when the `queryParameters` are falsy.
```js
const objectToQueryString = queryParameters => {
return queryParameters
? Object.entries(queryParameters).reduce((queryString, [key, val], index) => {

3
snippets/pipeAsyncFunctions.md
View File

@ -14,13 +14,14 @@ const pipeAsyncFunctions = (...fns) => arg => fns.reduce((p, f) => p.then(f), Pr
```
```js
const sum = pipeAsyncFunctions(
x => x + 1,
x => new Promise(resolve => setTimeout(() => resolve(x + 2), 1000)),
x => x + 3,
async x => (await x) + 4
);
(async () => {
(async() => {
console.log(await sum(5)); // 15 (after one second)
})();
```

1
snippets/remove.md
View File

@ -9,7 +9,6 @@ Use `Array.prototype.filter()` to find array elements that return truthy values
The `func` is invoked with three arguments (`value, index, array`).
```js
const remove = (arr, func) =>
Array.isArray(arr)
? arr.filter(func).reduce((acc, val) => {

1
snippets/size.md
View File

@ -12,6 +12,7 @@ Use `size` of a [`Blob` object](https://developer.mozilla.org/en-US/docs/Web/API
Split strings into array of characters with `split('')` and return its length.
```js
const size = val =>
Array.isArray(val)
? val.length