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30secondsofcode
2020-02-04 20:50:22 +00:00
parent dec6c28029
commit 330b2a0766
14 changed files with 136 additions and 133 deletions
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24
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"text": "Creates an array of arrays, ungrouping the elements in an array produced by [zip](#zip).\n\nUse `Math.max.apply()` to get the longest subarray in the array, `Array.prototype.map()` to make each element an array.\nUse `Array.prototype.reduce()` and `Array.prototype.forEach()` to map grouped values to individual arrays.\n\n",
"text": "Creates an array of arrays, ungrouping the elements in an array produced by [zip](/js/s/zip).\n\nUse `Math.max.apply()` to get the longest subarray in the array, `Array.prototype.map()` to make each element an array.\nUse `Array.prototype.reduce()` and `Array.prototype.forEach()` to map grouped values to individual arrays.\n\n",
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"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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"text": "Creates an array of arrays, ungrouping the elements in an array produced by [zip](#zip).\n\nUse `Math.max.apply()` to get the longest subarray in the array, `Array.prototype.map()` to make each element an array.\nUse `Array.prototype.reduce()` and `Array.prototype.forEach()` to map grouped values to individual arrays.\n\n",
"text": "Creates an array of arrays, ungrouping the elements in an array produced by [zip](/js/s/zip).\n\nUse `Math.max.apply()` to get the longest subarray in the array, `Array.prototype.map()` to make each element an array.\nUse `Array.prototype.reduce()` and `Array.prototype.forEach()` to map grouped values to individual arrays.\n\n",
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"es6": "const unzip = arr =>\n arr.reduce(\n (acc, val) => (val.forEach((v, i) => acc[i].push(v)), acc),\n Array.from({\n length: Math.max(...arr.map(x => x.length))\n }).map(x => [])\n );",
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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
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@ -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
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@ -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
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@ -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
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@ -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

2
vscode_snippets/snippets.json
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@ -3431,7 +3431,7 @@
" }).map(x => [])",
" );"
],
"description": "Creates an array of arrays, ungrouping the elements in an array produced by [zip](#zip).\n\nUse `Math.max.apply()` to get the longest subarray in the array, `Array.prototype.map()` to make each element an array.\nUse `Array.prototype.reduce()` and `Array.prototype.forEach()` to map grouped values to individual arrays.\n"
"description": "Creates an array of arrays, ungrouping the elements in an array produced by [zip](/js/s/zip).\n\nUse `Math.max.apply()` to get the longest subarray in the array, `Array.prototype.map()` to make each element an array.\nUse `Array.prototype.reduce()` and `Array.prototype.forEach()` to map grouped values to individual arrays.\n"
},
"unzipWith": {
"prefix": "30s_unzipWith",