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30secondsofcode
2020-01-30 19:37:05 +00:00
parent 13eda7be52
commit 0a709f6e99
9 changed files with 72 additions and 75 deletions
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10
snippet_data/snippetList.json
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52
snippet_data/snippets.json
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@ -4766,7 +4766,7 @@
"fileName": "join.md",
"text": "Joins all elements of an array into a string and returns this string.\nUses a separator and an end separator.\n\nUse `Array.prototype.reduce()` to combine elements into a string.\nOmit the second argument, `separator`, to use a default separator of `','`.\nOmit the third argument, `end`, to use the same value as `separator` by default.\n\n",
"codeBlocks": {
"es6": "const join = (arr, separator = ',', end = separator) =>\n arr.reduce(\n (acc, val, i) =>\n i === arr.length - 2\n ? acc + val + end\n : i === arr.length - 1\n ? acc + val\n : acc + val + separator,\n ''\n );",
"es6": "const join = (arr, separator = ',', end = separator) =>\n arr.reduce(\n (acc, val, i) =>\n i === arr.length - 2\n ? acc + val + end\n : i === arr.length - 1\n ? acc + val\n : acc + val + separator,\n ''\n );",
"es5": "var join = function join(arr) {\n var separator = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ',';\n var end = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : separator;\n return arr.reduce(function (acc, val, i) {\n return i === arr.length - 2 ? acc + val + end : i === arr.length - 1 ? acc + val : acc + val + separator;\n }, '');\n};",
"example": "join(['pen', 'pineapple', 'apple', 'pen'], ',', '&'); // \"pen,pineapple,apple&pen\"\njoin(['pen', 'pineapple', 'apple', 'pen'], ','); // \"pen,pineapple,apple,pen\"\njoin(['pen', 'pineapple', 'apple', 'pen']); // \"pen,pineapple,apple,pen\""
},
@ -4776,10 +4776,10 @@
]
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},
@ -5699,7 +5699,7 @@
"fileName": "objectToQueryString.md",
"text": "Returns a query string generated from the key-value pairs of the given object.\n\nUse `Array.prototype.reduce()` on `Object.entries(queryParameters)` to create the query string.\nDetermine the `symbol` to be either `?` or `&` based on the `length` of `queryString` and concatenate `val` to `queryString` only if it's a string.\nReturn the `queryString` or an empty string when the `queryParameters` are falsy.\n\n",
"codeBlocks": {
"es6": "const objectToQueryString = queryParameters => {\n return queryParameters\n ? Object.entries(queryParameters).reduce((queryString, [key, val], index) => {\n const symbol = queryString.length === 0 ? '?' : '&';\n queryString += typeof val === 'string' ? `${symbol}${key}=${val}` : '';\n return queryString;\n }, '')\n : '';\n};",
"es6": "const objectToQueryString = queryParameters => {\n return queryParameters\n ? Object.entries(queryParameters).reduce((queryString, [key, val], index) => {\n const symbol = queryString.length === 0 ? '?' : '&';\n queryString += typeof val === 'string' ? `${symbol}${key}=${val}` : '';\n return queryString;\n }, '')\n : '';\n};",
"es5": "function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }\n\nfunction _nonIterableRest() { throw new TypeError(\"Invalid attempt to destructure non-iterable instance\"); }\n\nfunction _iterableToArrayLimit(arr, i) { if (!(Symbol.iterator in Object(arr) || Object.prototype.toString.call(arr) === \"[object Arguments]\")) { return; } 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\"] != null) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; }\n\nfunction _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }\n\nvar objectToQueryString = function objectToQueryString(queryParameters) {\n return queryParameters ? Object.entries(queryParameters).reduce(function (queryString, _ref, index) {\n var _ref2 = _slicedToArray(_ref, 2),\n key = _ref2[0],\n val = _ref2[1];\n\n var symbol = queryString.length === 0 ? '?' : '&';\n queryString += typeof val === 'string' ? \"\".concat(symbol).concat(key, \"=\").concat(val) : '';\n return queryString;\n }, '') : '';\n};",
"example": "objectToQueryString({ page: '1', size: '2kg', key: undefined }); // '?page=1&size=2kg'"
},
@ -5711,10 +5711,10 @@
]
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@ -6268,7 +6268,7 @@
"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})();"
},
"tags": [
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@ -6277,10 +6277,10 @@
]
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@ -6911,7 +6911,7 @@
"fileName": "remove.md",
"text": "Removes elements from an array for which the given function returns `false`.\n\nUse `Array.prototype.filter()` to find array elements that return truthy values and `Array.prototype.reduce()` to remove elements using `Array.prototype.splice()`.\nThe `func` is invoked with three arguments (`value, index, array`).\n\n",
"codeBlocks": {
"es6": "const remove = (arr, func) =>\n Array.isArray(arr)\n ? arr.filter(func).reduce((acc, val) => {\n arr.splice(arr.indexOf(val), 1);\n return acc.concat(val);\n }, [])\n : [];",
"es6": "const remove = (arr, func) =>\n Array.isArray(arr)\n ? arr.filter(func).reduce((acc, val) => {\n arr.splice(arr.indexOf(val), 1);\n return acc.concat(val);\n }, [])\n : [];",
"es5": "var remove = function remove(arr, func) {\n return Array.isArray(arr) ? arr.filter(func).reduce(function (acc, val) {\n arr.splice(arr.indexOf(val), 1);\n return acc.concat(val);\n }, []) : [];\n};",
"example": "remove([1, 2, 3, 4], n => n % 2 === 0); // [2, 4]"
},
@ -6921,10 +6921,10 @@
]
},
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},
@ -7425,7 +7425,7 @@
"fileName": "size.md",
"text": "Gets the size of an array, object or string.\n\nGet type of `val` (`array`, `object` or `string`). \nUse `length` property for arrays.\nUse `length` or `size` value if available or number of keys for objects.\nUse `size` of a [`Blob` object](https://developer.mozilla.org/en-US/docs/Web/API/Blob) created from `val` for strings.\nSplit strings into array of characters with `split('')` and return its length.\n\n",
"codeBlocks": {
"es6": "const size = val =>\n Array.isArray(val)\n ? val.length\n : val && typeof val === 'object'\n ? val.size || val.length || Object.keys(val).length\n : typeof val === 'string'\n ? new Blob([val]).size\n : 0;",
"es6": "const size = val =>\n Array.isArray(val)\n ? val.length\n : val && typeof val === 'object'\n ? val.size || val.length || Object.keys(val).length\n : typeof val === 'string'\n ? new Blob([val]).size\n : 0;",
"es5": "function _typeof(obj) { if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nvar size = function size(val) {\n return 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;\n};",
"example": "size([1, 2, 3, 4, 5]); // 5\nsize('size'); // 4\nsize({ one: 1, two: 2, three: 3 }); // 3"
},
@ -7437,10 +7437,10 @@
]
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5
snippets/join.md
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@ -11,15 +11,14 @@ 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) =>
i === arr.length - 2
? acc + val + end
: i === arr.length - 1
? acc + val
: acc + val + separator,
? acc + val
: acc + val + separator,
''
);
```

9
snippets/objectToQueryString.md
View File

@ -10,14 +10,13 @@ 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) => {
const symbol = queryString.length === 0 ? '?' : '&';
queryString += typeof val === 'string' ? `${symbol}${key}=${val}` : '';
return queryString;
}, '')
const symbol = queryString.length === 0 ? '?' : '&';
queryString += typeof val === 'string' ? `${symbol}${key}=${val}` : '';
return queryString;
}, '')
: '';
};
```

3
snippets/pipeAsyncFunctions.md
View File

@ -14,14 +14,13 @@ 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)
})();
```

7
snippets/remove.md
View File

@ -9,12 +9,13 @@ 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) => {
arr.splice(arr.indexOf(val), 1);
return acc.concat(val);
}, [])
arr.splice(arr.indexOf(val), 1);
return acc.concat(val);
}, [])
: [];
```

9
snippets/size.md
View File

@ -12,15 +12,14 @@ 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
: val && typeof val === 'object'
? val.size || val.length || Object.keys(val).length
: typeof val === 'string'
? new Blob([val]).size
: 0;
? val.size || val.length || Object.keys(val).length
: typeof val === 'string'
? new Blob([val]).size
: 0;
```
```js

26
test/_30s.js
View File

@ -674,8 +674,8 @@ const join = (arr, separator = ',', end = separator) =>
i === arr.length - 2
? acc + val + end
: i === arr.length - 1
? acc + val
: acc + val + separator,
? acc + val
: acc + val + separator,
''
);
const JSONtoCSV = (arr, columns, delimiter = ',') =>
@ -801,10 +801,10 @@ const objectToPairs = obj => Object.keys(obj).map(k => [k, obj[k]]);
const objectToQueryString = queryParameters => {
return queryParameters
? Object.entries(queryParameters).reduce((queryString, [key, val], index) => {
const symbol = queryString.length === 0 ? '?' : '&';
queryString += typeof val === 'string' ? `${symbol}${key}=${val}` : '';
return queryString;
}, '')
const symbol = queryString.length === 0 ? '?' : '&';
queryString += typeof val === 'string' ? `${symbol}${key}=${val}` : '';
return queryString;
}, '')
: '';
};
const observeMutations = (element, callback, options) => {
@ -1036,9 +1036,9 @@ const reject = (pred, array) => array.filter((...args) => !pred(...args));
const remove = (arr, func) =>
Array.isArray(arr)
? arr.filter(func).reduce((acc, val) => {
arr.splice(arr.indexOf(val), 1);
return acc.concat(val);
}, [])
arr.splice(arr.indexOf(val), 1);
return acc.concat(val);
}, [])
: [];
const removeNonASCII = str => str.replace(/[^\x20-\x7E]/g, '');
const renameKeys = (keysMap, obj) =>
@ -1116,10 +1116,10 @@ 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;
? val.size || val.length || Object.keys(val).length
: typeof val === 'string'
? new Blob([val]).size
: 0;
const sleep = ms => new Promise(resolve => setTimeout(resolve, ms));
const smoothScroll = element =>
document.querySelector(element).scrollIntoView({

26
vscode_snippets/snippets.json
View File

@ -1785,8 +1785,8 @@
" i === arr.length - 2",
" ? acc + val + end",
" : i === arr.length - 1",
" ? acc + val",
" : acc + val + separator,",
" ? acc + val",
" : acc + val + separator,",
" ''",
" );"
],
@ -2128,10 +2128,10 @@
"const objectToQueryString = queryParameters => {",
" return queryParameters",
" ? Object.entries(queryParameters).reduce((queryString, [key, val], index) => {",
" const symbol = queryString.length === 0 ? '?' : '&';",
" queryString += typeof val === 'string' ? `${symbol}${key}=${val}` : '';",
" return queryString;",
" }, '')",
" const symbol = queryString.length === 0 ? '?' : '&';",
" queryString += typeof val === 'string' ? `${symbol}${key}=${val}` : '';",
" return queryString;",
" }, '')",
" : '';",
"};"
],
@ -2645,9 +2645,9 @@
"const remove = (arr, func) =>",
" Array.isArray(arr)",
" ? arr.filter(func).reduce((acc, val) => {",
" arr.splice(arr.indexOf(val), 1);",
" return acc.concat(val);",
" }, [])",
" arr.splice(arr.indexOf(val), 1);",
" return acc.concat(val);",
" }, [])",
" : [];"
],
"description": "Removes elements from an array for which the given function returns `false`.\n\nUse `Array.prototype.filter()` to find array elements that return truthy values and `Array.prototype.reduce()` to remove elements using `Array.prototype.splice()`.\nThe `func` is invoked with three arguments (`value, index, array`).\n"
@ -2845,10 +2845,10 @@
" 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;"
" ? val.size || val.length || Object.keys(val).length",
" : typeof val === 'string'",
" ? new Blob([val]).size",
" : 0;"
],
"description": "Gets the size of an array, object or string.\n\nGet type of `val` (`array`, `object` or `string`). \nUse `length` property for arrays.\nUse `length` or `size` value if available or number of keys for objects.\nUse `size` of a [`Blob` object](https://developer.mozilla.org/en-US/docs/Web/API/Blob) created from `val` for strings.\nSplit strings into array of characters with `split('')` and return its length.\n"
},