Travis build: 1705
This commit is contained in:
30secondsofcode
@ -103,7 +103,6 @@
|
||||
"attributes": {
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"text": "Creates a function that accepts up to `n` arguments, ignoring any additional arguments.\n\nCall the provided function, `fn`, with up to `n` arguments, using `Array.prototype.slice(0, n)` and the spread operator (`...`).\n\n",
|
||||
"tags": [
|
||||
"adapter",
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"function",
|
||||
"intermediate"
|
||||
]
|
||||
@ -325,13 +324,12 @@
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||||
"attributes": {
|
||||
"text": "Given a key and a set of arguments, call them when given a context. Primarily useful in composition.\n\nUse a closure to call a stored key with stored arguments.\n\n",
|
||||
"tags": [
|
||||
"adapter",
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||||
"function",
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"intermediate"
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||||
@ -498,14 +496,13 @@
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||||
"attributes": {
|
||||
"text": "Changes a function that accepts an array into a variadic function.\n\nGiven a function, return a closure that collects all inputs into an array-accepting function.\n\n",
|
||||
"tags": [
|
||||
"adapter",
|
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"function",
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"array",
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"intermediate"
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@ -835,7 +832,7 @@
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@ -898,7 +895,7 @@
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@ -1037,7 +1034,7 @@
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@ -1273,7 +1270,7 @@
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@ -1439,13 +1436,12 @@
|
||||
"attributes": {
|
||||
"text": "Flip takes a function as an argument, then makes the first argument the last.\n\nReturn a closure that takes variadic inputs, and splices the last argument to make it the first argument before applying the rest.\n\n",
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
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]
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{
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@ -1693,7 +1689,7 @@
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]
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@ -2420,7 +2416,7 @@
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@ -2924,7 +2920,7 @@
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@ -3500,7 +3496,7 @@
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},
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||||
{
|
||||
@ -3653,13 +3649,12 @@
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||||
"attributes": {
|
||||
"text": "Creates a function that invokes each provided function with the arguments it receives and returns the results.\n\nUse `Array.prototype.map()` and `Function.prototype.apply()` to apply each function to the given arguments.\n\n",
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"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
]
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},
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}
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||||
},
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||||
{
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||||
@ -3669,13 +3664,12 @@
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||||
"attributes": {
|
||||
"text": "Creates a function that invokes the provided function with its arguments transformed.\n\nUse `Array.prototype.map()` to apply `transforms` to `args` in combination with the spread operator (`...`) to pass the transformed arguments to `fn`.\n\n",
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"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
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||||
]
|
||||
},
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||||
"meta": {
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"hash": "8aa05f5b221bb24bb52cf3b75b6087ca664ede628a8cfff2b3193ebe67f6b2e7"
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"hash": "5a47cd886751568aa2ce0bd8a935d3f4730076c509666b66f7305f3660320847"
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}
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||||
},
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||||
{
|
||||
@ -3842,14 +3836,13 @@
|
||||
"attributes": {
|
||||
"text": "Performs left-to-right function composition for asynchronous functions.\n\nUse `Array.prototype.reduce()` with the spread operator (`...`) to perform left-to-right function composition using `Promise.then()`.\nThe functions can return a combination of: simple values, `Promise`'s, or they can be defined as `async` ones returning through `await`.\nAll functions must be unary.\n\n",
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"promise",
|
||||
"intermediate"
|
||||
]
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},
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"meta": {
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}
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||||
},
|
||||
{
|
||||
@ -3859,13 +3852,12 @@
|
||||
"attributes": {
|
||||
"text": "Performs left-to-right function composition.\n\nUse `Array.prototype.reduce()` with the spread operator (`...`) to perform left-to-right function composition.\nThe first (leftmost) function can accept one or more arguments; the remaining functions must be unary.\n\n",
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
]
|
||||
},
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"meta": {
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}
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||||
},
|
||||
{
|
||||
@ -3954,14 +3946,13 @@
|
||||
"attributes": {
|
||||
"text": "Converts an asynchronous function to return a promise.\n\n*In Node 8+, you can use [`util.promisify`](https://nodejs.org/api/util.html#util_util_promisify_original)*\n\nUse currying to return a function returning a `Promise` that calls the original function.\nUse the `...rest` operator to pass in all the parameters.\n\n",
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"promise",
|
||||
"intermediate"
|
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]
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"hash": "fa80063e1d74810a551c7f01397b126868a1a7f7b306859182b033aa4a2696d4"
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}
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||||
},
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||||
{
|
||||
@ -4131,13 +4122,12 @@
|
||||
"attributes": {
|
||||
"text": "Creates a function that invokes the provided function with its arguments arranged according to the specified indexes.\n\nUse `Array.prototype.map()` to reorder arguments based on `indexes` in combination with the spread operator (`...`) to pass the transformed arguments to `fn`.\n\n",
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
]
|
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"meta": {
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}
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{
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@ -4246,7 +4236,7 @@
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]
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"meta": {
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"hash": "069472d018c3102412dafc2ae8ec6e9396e53c01d0073079f2e3f1ac3c99b6e9"
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{
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@ -4562,7 +4552,7 @@
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]
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"meta": {
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"hash": "6dd4c6a51d2c80fa4768c95ae01c16a8359c4140bcad28c7fde0cecd72d7d3e2"
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"hash": "24b93b68a59b49f245590930fed6fb82e286ce09f90e292466cde63c1784c347"
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{
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||||
@ -4700,12 +4690,12 @@
|
||||
"attributes": {
|
||||
"text": "Takes a variadic function and returns a closure that accepts an array of arguments to map to the inputs of the function.\n\nUse closures and the spread operator (`...`) to map the array of arguments to the inputs of the function.\n\n",
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
]
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"hash": "b94cbdec64a2897b1a193d5fd32eeb59b315ea590d609a50b7fe50012b1d4ce4"
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}
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||||
},
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||||
{
|
||||
@ -5234,13 +5224,12 @@
|
||||
"attributes": {
|
||||
"text": "Creates a function that accepts up to one argument, ignoring any additional arguments.\n\nCall the provided function, `fn`, with just the first argument given.\n\n",
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
"beginner"
|
||||
]
|
||||
},
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"hash": "f0eda594028997293121b8afca105772ce002f9fe0d5642ffd41c3167fd6b4f1"
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||||
}
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||||
},
|
||||
{
|
||||
|
||||
@ -169,7 +169,6 @@
|
||||
"example": "const firstTwoMax = ary(Math.max, 2);\n[[2, 6, 'a'], [6, 4, 8], [10]].map(x => firstTwoMax(...x)); // [6, 6, 10]"
|
||||
},
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
]
|
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@ -177,8 +176,8 @@
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"lastUpdated": "1578902643",
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"authorCount": 5
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@ -528,19 +527,18 @@
|
||||
"codeBlocks": {
|
||||
"es6": "const call = (key, ...args) => context => context[key](...args);",
|
||||
"es5": "var call = function call(key) {\n for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n args[_key - 1] = arguments[_key];\n }\n\n return function (context) {\n return context[key].apply(context, args);\n };\n};",
|
||||
"example": "Promise.resolve([1, 2, 3])\n .then(call('map', x => 2 * x))\n .then(console.log); // [ 2, 4, 6 ]\nconst map = call.bind(null, 'map');\nPromise.resolve([1, 2, 3])\n .then(map(x => 2 * x))\n .then(console.log); // [ 2, 4, 6 ]"
|
||||
"example": "Promise.resolve([1, 2, 3])\r\n .then(call('map', x => 2 * x))\r\n .then(console.log); // [ 2, 4, 6 ]\r\nconst map = call.bind(null, 'map');\r\nPromise.resolve([1, 2, 3])\r\n .then(map(x => 2 * x))\r\n .then(console.log); // [ 2, 4, 6 ]"
|
||||
},
|
||||
"tags": [
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"adapter",
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"function",
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"intermediate"
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@ -811,20 +809,19 @@
|
||||
"codeBlocks": {
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||||
"es6": "const collectInto = fn => (...args) => fn(args);",
|
||||
"es5": "var collectInto = function collectInto(fn) {\n return function () {\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n return fn(args);\n };\n};",
|
||||
"example": "const Pall = collectInto(Promise.all.bind(Promise));\nlet p1 = Promise.resolve(1);\nlet p2 = Promise.resolve(2);\nlet p3 = new Promise(resolve => setTimeout(resolve, 2000, 3));\nPall(p1, p2, p3).then(console.log); // [1, 2, 3] (after about 2 seconds)"
|
||||
"example": "const Pall = collectInto(Promise.all.bind(Promise));\r\nlet p1 = Promise.resolve(1);\r\nlet p2 = Promise.resolve(2);\r\nlet p3 = new Promise(resolve => setTimeout(resolve, 2000, 3));\r\nPall(p1, p2, p3).then(console.log); // [1, 2, 3] (after about 2 seconds)"
|
||||
},
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"tags": [
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"adapter",
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"function",
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"array",
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@ -1350,7 +1347,7 @@
|
||||
"fileName": "deepClone.md",
|
||||
"text": "Creates a deep clone of an object.\n\nUse recursion.\nCheck if the passed object is `null` and, if so, return `null`.\nUse `Object.assign()` and an empty object (`{}`) to create a shallow clone of the original.\nUse `Object.keys()` and `Array.prototype.forEach()` to determine which key-value pairs need to be deep cloned.\n\n",
|
||||
"codeBlocks": {
|
||||
"es6": "const deepClone = obj => {\n if (obj === null) return null;\n let clone = Object.assign({}, obj);\n Object.keys(clone).forEach(\n key => (clone[key] = typeof obj[key] === 'object' ? deepClone(obj[key]) : obj[key])\n );\n return Array.isArray(obj) && obj.length\n ? (clone.length = obj.length) && Array.from(clone)\n : Array.isArray(obj)\n ? Array.from(obj)\n : clone;\n};",
|
||||
"es6": "const deepClone = obj => {\n if (obj === null) return null;\n let clone = Object.assign({}, obj);\n Object.keys(clone).forEach(\n key => (clone[key] = typeof obj[key] === 'object' ? deepClone(obj[key]) : obj[key])\n );\n return Array.isArray(obj) && obj.length\n ? (clone.length = obj.length) && Array.from(clone)\n : Array.isArray(obj)\n ? Array.from(obj)\n : clone;\n};",
|
||||
"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 deepClone = function deepClone(obj) {\n if (obj === null) return null;\n var clone = Object.assign({}, obj);\n Object.keys(clone).forEach(function (key) {\n return clone[key] = _typeof(obj[key]) === 'object' ? deepClone(obj[key]) : obj[key];\n });\n return Array.isArray(obj) && obj.length ? (clone.length = obj.length) && Array.from(clone) : Array.isArray(obj) ? Array.from(obj) : clone;\n};",
|
||||
"example": "const a = { foo: 'bar', obj: { a: 1, b: 2 } };\nconst b = deepClone(a); // a !== b, a.obj !== b.obj"
|
||||
},
|
||||
@ -1361,7 +1358,7 @@
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "77a01af8797ecbe71b9c9412d21c144c03a46a49dd3d0e7d869c3df38b39b2b4",
|
||||
"hash": "0a4684d6fc79bdbbac31df3af6c493ba7c881936ada5bc52824b4f26ca177459",
|
||||
"firstSeen": "1516733326",
|
||||
"lastUpdated": "1577785133",
|
||||
"updateCount": 55,
|
||||
@ -1453,7 +1450,7 @@
|
||||
"fileName": "deepMapKeys.md",
|
||||
"text": "Deep maps an object's keys.\n\nCreates an object with the same values as the provided object and keys generated by running the provided function for each key.\nUse `Object.keys(obj)` to iterate over the object's keys. \nUse `Array.prototype.reduce()` to create a new object with the same values and mapped keys using `fn`.\n\n",
|
||||
"codeBlocks": {
|
||||
"es6": "const deepMapKeys = (obj, f) =>\n Array.isArray(obj)\n ? obj.map(val => deepMapKeys(val, f))\n : typeof obj === 'object'\n ? Object.keys(obj).reduce((acc, current) => {\n const val = obj[current];\n acc[f(current)] =\n val !== null && typeof val === 'object' ? deepMapKeys(val, f) : (acc[f(current)] = val);\n return acc;\n }, {})\n : obj;",
|
||||
"es6": "const deepMapKeys = (obj, f) =>\n Array.isArray(obj)\n ? obj.map(val => deepMapKeys(val, f))\n : typeof obj === 'object'\n ? Object.keys(obj).reduce((acc, current) => {\n const val = obj[current];\n acc[f(current)] =\n val !== null && typeof val === 'object' ? deepMapKeys(val, f) : (acc[f(current)] = val);\n return acc;\n }, {})\n : obj;",
|
||||
"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 deepMapKeys = function deepMapKeys(obj, f) {\n return Array.isArray(obj) ? obj.map(function (val) {\n return deepMapKeys(val, f);\n }) : _typeof(obj) === 'object' ? Object.keys(obj).reduce(function (acc, current) {\n var val = obj[current];\n acc[f(current)] = val !== null && _typeof(val) === 'object' ? deepMapKeys(val, f) : acc[f(current)] = val;\n return acc;\n }, {}) : obj;\n};",
|
||||
"example": "const obj = {\n foo: '1',\n nested: {\n child: {\n withArray: [\n {\n grandChild: ['hello']\n }\n ]\n }\n }\n};\nconst upperKeysObj = deepMapKeys(obj, key => key.toUpperCase());\n/*\n{\n \"FOO\":\"1\",\n \"NESTED\":{\n \"CHILD\":{\n \"WITHARRAY\":[\n {\n \"GRANDCHILD\":[ 'hello' ]\n }\n ]\n }\n }\n}\n*/"
|
||||
},
|
||||
@ -1464,7 +1461,7 @@
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "6fa14364405f7b99aa49c2157bdc08c02b4ce2f288db29a4348a6983460933c7",
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||||
"hash": "a4e1e33c0688dbf1ca231d9d8ea315ffed93b7f83f5d8cbf0714f10fdfeda8cf",
|
||||
"firstSeen": "1544374334\n1543497773",
|
||||
"lastUpdated": "1577785133",
|
||||
"updateCount": 69,
|
||||
@ -1682,7 +1679,7 @@
|
||||
"fileName": "dig.md",
|
||||
"text": "Returns the target value in a nested JSON object, based on the given key.\n\nUse the `in` operator to check if `target` exists in `obj`.\nIf found, return the value of `obj[target]`, otherwise use `Object.values(obj)` and `Array.prototype.reduce()` to recursively call `dig` on each nested object until the first matching key/value pair is found.\n\n",
|
||||
"codeBlocks": {
|
||||
"es6": "const dig = (obj, target) =>\n target in obj\n ? obj[target]\n : Object.values(obj).reduce((acc, val) => {\n if (acc !== undefined) return acc;\n if (typeof val === 'object') return dig(val, target);\n }, undefined);",
|
||||
"es6": "const dig = (obj, target) =>\n target in obj\n ? obj[target]\n : Object.values(obj).reduce((acc, val) => {\n if (acc !== undefined) return acc;\n if (typeof val === 'object') return dig(val, target);\n }, undefined);",
|
||||
"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 dig = function dig(obj, target) {\n return target in obj ? obj[target] : Object.values(obj).reduce(function (acc, val) {\n if (acc !== undefined) return acc;\n if (_typeof(val) === 'object') return dig(val, target);\n }, undefined);\n};",
|
||||
"example": "const data = {\n level1: {\n level2: {\n level3: 'some data'\n }\n }\n};\ndig(data, 'level3'); // 'some data'\ndig(data, 'level4'); // undefined"
|
||||
},
|
||||
@ -1693,7 +1690,7 @@
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "bdc202436bee09f06a353d31841c6cfff33e8efead34c6c56ae1a1413284976d",
|
||||
"hash": "484bd222e636e8a8409c30ddb1fe6e3fe72ab7a43f2edf089b2758d5e9bee528",
|
||||
"firstSeen": "1531080384",
|
||||
"lastUpdated": "1577791301",
|
||||
"updateCount": 91,
|
||||
@ -2068,7 +2065,7 @@
|
||||
"fileName": "factorial.md",
|
||||
"text": "Calculates the factorial of a number.\n\nUse recursion.\nIf `n` is less than or equal to `1`, return `1`.\nOtherwise, return the product of `n` and the factorial of `n - 1`.\nThrows an exception if `n` is a negative number.\n\n",
|
||||
"codeBlocks": {
|
||||
"es6": "const factorial = n =>\n n < 0\n ? (() => {\n throw new TypeError('Negative numbers are not allowed!');\n })()\n : n <= 1\n ? 1\n : n * factorial(n - 1);",
|
||||
"es6": "const factorial = n =>\n n < 0\n ? (() => {\n throw new TypeError('Negative numbers are not allowed!');\n })()\n : n <= 1\n ? 1\n : n * factorial(n - 1);",
|
||||
"es5": "var factorial = function factorial(n) {\n return n < 0 ? function () {\n throw new TypeError('Negative numbers are not allowed!');\n }() : n <= 1 ? 1 : n * factorial(n - 1);\n};",
|
||||
"example": "factorial(6); // 720"
|
||||
},
|
||||
@ -2079,7 +2076,7 @@
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "6e9710c9117f500e74e65c0ee36b39fb80bd55537fa5ff9c4b1136b2667096f2",
|
||||
"hash": "0eac852db7a7add352b0d36677b22718b342ed9dc12f11780cac87e3b8260a05",
|
||||
"firstSeen": "1512650493",
|
||||
"lastUpdated": "1577791301",
|
||||
"updateCount": 96,
|
||||
@ -2352,19 +2349,18 @@
|
||||
"codeBlocks": {
|
||||
"es6": "const flip = fn => (first, ...rest) => fn(...rest, first);",
|
||||
"es5": "var flip = function flip(fn) {\n return function (first) {\n for (var _len = arguments.length, rest = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n rest[_key - 1] = arguments[_key];\n }\n\n return fn.apply(void 0, rest.concat([first]));\n };\n};",
|
||||
"example": "let a = { name: 'John Smith' };\nlet b = {};\nconst mergeFrom = flip(Object.assign);\nlet mergePerson = mergeFrom.bind(null, a);\nmergePerson(b); // == b\nb = {};\nObject.assign(b, a); // == b"
|
||||
"example": "let a = { name: 'John Smith' };\r\nlet b = {};\r\nconst mergeFrom = flip(Object.assign);\r\nlet mergePerson = mergeFrom.bind(null, a);\r\nmergePerson(b); // == b\r\nb = {};\r\nObject.assign(b, a); // == b"
|
||||
},
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "cfc08612e65d9dc9a5c634e94a379644fbdd7a858f0cbaf1c2e272d038495be9",
|
||||
"hash": "553f8cccba3bd6339b01a926661a2a3fcca310f02bbb7402d1e0eeca5bf5d729",
|
||||
"firstSeen": "1513903335",
|
||||
"lastUpdated": "1565681352",
|
||||
"updateCount": 18,
|
||||
"lastUpdated": "1578902841",
|
||||
"updateCount": 19,
|
||||
"authorCount": 8
|
||||
}
|
||||
},
|
||||
@ -2759,7 +2755,7 @@
|
||||
"fileName": "getMeridiemSuffixOfInteger.md",
|
||||
"text": "Converts an integer to a suffixed string, adding `am` or `pm` based on its value.\n\nUse the modulo operator (`%`) and conditional checks to transform an integer to a stringified 12-hour format with meridiem suffix.\n\n",
|
||||
"codeBlocks": {
|
||||
"es6": "const getMeridiemSuffixOfInteger = num =>\n num === 0 || num === 24\n ? 12 + 'am'\n : num === 12\n ? 12 + 'pm'\n : num < 12\n ? (num % 12) + 'am'\n : (num % 12) + 'pm';",
|
||||
"es6": "const getMeridiemSuffixOfInteger = num =>\n num === 0 || num === 24\n ? 12 + 'am'\n : num === 12\n ? 12 + 'pm'\n : num < 12\n ? (num % 12) + 'am'\n : (num % 12) + 'pm';",
|
||||
"es5": "var getMeridiemSuffixOfInteger = function getMeridiemSuffixOfInteger(num) {\n return num === 0 || num === 24 ? 12 + 'am' : num === 12 ? 12 + 'pm' : num < 12 ? num % 12 + 'am' : num % 12 + 'pm';\n};",
|
||||
"example": "getMeridiemSuffixOfInteger(0); // \"12am\"\ngetMeridiemSuffixOfInteger(11); // \"11am\"\ngetMeridiemSuffixOfInteger(13); // \"1pm\"\ngetMeridiemSuffixOfInteger(25); // \"1pm\""
|
||||
},
|
||||
@ -2769,7 +2765,7 @@
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "f9e6687cc28cd80e68f7a6776f893c7478aaa942710e0eb7144f105eba574a54",
|
||||
"hash": "9e39c6a3a8ec5b51c5e16f69107fc9e90b2697b2cf2689850872071bb968723e",
|
||||
"firstSeen": "1515856488",
|
||||
"lastUpdated": "1577791301",
|
||||
"updateCount": 53,
|
||||
@ -3081,9 +3077,9 @@
|
||||
"meta": {
|
||||
"hash": "917079b8a868588894ebbd8d76a1bf5359d91d09dce294d7bb2cc0185900a2ae",
|
||||
"firstSeen": "1578253239",
|
||||
"lastUpdated": "1578253239",
|
||||
"updateCount": 2,
|
||||
"authorCount": 2
|
||||
"lastUpdated": "1578253557",
|
||||
"updateCount": 3,
|
||||
"authorCount": 3
|
||||
}
|
||||
},
|
||||
{
|
||||
@ -3946,7 +3942,7 @@
|
||||
"fileName": "isContainedIn.md",
|
||||
"text": "Returns `true` if the elements of the first array are contained in the second one regardless of order, `false` otherwise.\n\nUse a `for...of` loop over a `Set` created from the first array.\nUse `Array.prototype.some()` to check if all distinct values are contained in the second array, use `Array.prototype.filter()` to compare the amount of occurences of each distinct value in both arrays.\nReturn `false` if the count of any element is greater in the first array than the second one, `true` otherwise.\n\n",
|
||||
"codeBlocks": {
|
||||
"es6": "const isContainedIn = (a, b) => {\n for (const v of new Set(a)) {\n if (\n !b.some(e => e === v) ||\n a.filter(e => e === v).length > b.filter(e => e === v).length\n )\n return false;\n }\n return true;\n};",
|
||||
"es6": "const isContainedIn = (a, b) => {\n for (const v of new Set(a)) {\n if (!b.some(e => e === v) || a.filter(e => e === v).length > b.filter(e => e === v).length)\n return false;\n }\n return true;\n};",
|
||||
"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 isContainedIn = function isContainedIn(a, b) {\n var _iteratorNormalCompletion = true;\n var _didIteratorError = false;\n var _iteratorError = undefined;\n\n try {\n var _loop = function _loop() {\n var v = _step.value;\n if (!b.some(function (e) {\n return e === v;\n }) || a.filter(function (e) {\n return e === v;\n }).length > b.filter(function (e) {\n return e === v;\n }).length) return {\n v: false\n };\n };\n\n for (var _iterator = new Set(a)[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n var _ret = _loop();\n\n if (_typeof(_ret) === \"object\") return _ret.v;\n }\n } catch (err) {\n _didIteratorError = true;\n _iteratorError = err;\n } finally {\n try {\n if (!_iteratorNormalCompletion && _iterator[\"return\"] != null) {\n _iterator[\"return\"]();\n }\n } finally {\n if (_didIteratorError) {\n throw _iteratorError;\n }\n }\n }\n\n return true;\n};",
|
||||
"example": "isContainedIn([1, 4], [2, 4, 1]); // true"
|
||||
},
|
||||
@ -3956,11 +3952,11 @@
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "b89ab73ffc7dd9b7650e80eb41a20194dfee6f93740876349b6af91dccc6ecd3",
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"hash": "113eed606462730d4b4917d3a3125959303efda47a7c54afb0699a601e3e7fd0",
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"firstSeen": "1578253251",
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"lastUpdated": "1578253251",
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"updateCount": 2,
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"authorCount": 2
|
||||
"lastUpdated": "1578253557",
|
||||
"updateCount": 3,
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||||
"authorCount": 3
|
||||
}
|
||||
},
|
||||
{
|
||||
@ -4770,7 +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\""
|
||||
},
|
||||
@ -4780,10 +4776,10 @@
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "3db3faac666ee61ab86c70766d2ab5d1293ffd818da87edb971bfff7a366364a",
|
||||
"hash": "362fddaa6244404741e84bca6fc442a101fdb642af53b299e8b9994d0d7162d8",
|
||||
"firstSeen": "1514801920",
|
||||
"lastUpdated": "1578058637",
|
||||
"updateCount": 58,
|
||||
"lastUpdated": "1578253557",
|
||||
"updateCount": 59,
|
||||
"authorCount": 7
|
||||
}
|
||||
},
|
||||
@ -5704,7 +5700,7 @@
|
||||
"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'"
|
||||
},
|
||||
@ -5716,10 +5712,10 @@
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "e8f820ce6da97eabde082ffb829c9fb700e85efc79bdebe883c67237269e3f52",
|
||||
"hash": "b031c3387ef66411ab5d295788eac4247ada5b4b068dda90603d3c973890bc26",
|
||||
"firstSeen": "1570824965",
|
||||
"lastUpdated": "1578058637",
|
||||
"updateCount": 25,
|
||||
"lastUpdated": "1578253557",
|
||||
"updateCount": 26,
|
||||
"authorCount": 4
|
||||
}
|
||||
},
|
||||
@ -5969,16 +5965,15 @@
|
||||
"example": "const minMax = over(Math.min, Math.max);\nminMax(1, 2, 3, 4, 5); // [1,5]"
|
||||
},
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "ac660685eb10f64c7e573d0299936ae0bb562e531b2f3a76b048e3bbe9605bcc",
|
||||
"hash": "d19ede265d140ecd73abb0a471042ab93591ef7b19ba92d3f8a0462661bdc99f",
|
||||
"firstSeen": "1516734137",
|
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"lastUpdated": "1565681352",
|
||||
"updateCount": 5,
|
||||
"lastUpdated": "1578902833",
|
||||
"updateCount": 6,
|
||||
"authorCount": 4
|
||||
}
|
||||
},
|
||||
@ -5995,16 +5990,15 @@
|
||||
"example": "const square = n => n * n;\nconst double = n => n * 2;\nconst fn = overArgs((x, y) => [x, y], [square, double]);\nfn(9, 3); // [81, 6]"
|
||||
},
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
]
|
||||
},
|
||||
"meta": {
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"hash": "8aa05f5b221bb24bb52cf3b75b6087ca664ede628a8cfff2b3193ebe67f6b2e7",
|
||||
"hash": "5a47cd886751568aa2ce0bd8a935d3f4730076c509666b66f7305f3660320847",
|
||||
"firstSeen": "1517144056",
|
||||
"lastUpdated": "1565681352",
|
||||
"updateCount": 8,
|
||||
"lastUpdated": "1578902749",
|
||||
"updateCount": 9,
|
||||
"authorCount": 5
|
||||
}
|
||||
},
|
||||
@ -6275,20 +6269,19 @@
|
||||
"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": [
|
||||
"adapter",
|
||||
"function",
|
||||
"promise",
|
||||
"intermediate"
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "7ccbf66d8d55c60bcf12baa980cf32d67a4ba567894d59e2d798c9af792424ff",
|
||||
"hash": "0eb844801e767edcaa6a882a6dce4b5b1dadecb53a92d6ec259d36c57b6a3dd0",
|
||||
"firstSeen": "1517069864",
|
||||
"lastUpdated": "1578058637",
|
||||
"updateCount": 82,
|
||||
"lastUpdated": "1578902698",
|
||||
"updateCount": 84,
|
||||
"authorCount": 5
|
||||
}
|
||||
},
|
||||
@ -6305,16 +6298,15 @@
|
||||
"example": "const add5 = x => x + 5;\nconst multiply = (x, y) => x * y;\nconst multiplyAndAdd5 = pipeFunctions(multiply, add5);\nmultiplyAndAdd5(5, 2); // 15"
|
||||
},
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "dbdae1e05f13477865039be627fcd258943cbf2d7926e160de74a3ab5244dba1",
|
||||
"hash": "6b85e9e5022873b5f6d6e955b383edb46e8c37615d9266fb5ee1af7939f08686",
|
||||
"firstSeen": "1514307747",
|
||||
"lastUpdated": "1565681352",
|
||||
"updateCount": 7,
|
||||
"lastUpdated": "1578902773",
|
||||
"updateCount": 8,
|
||||
"authorCount": 6
|
||||
}
|
||||
},
|
||||
@ -6460,17 +6452,16 @@
|
||||
"example": "const delay = promisify((d, cb) => setTimeout(cb, d));\ndelay(2000).then(() => console.log('Hi!')); // // Promise resolves after 2s"
|
||||
},
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"promise",
|
||||
"intermediate"
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "a6fe92925d4c25fccd29ae85d1c2004f88c73222099091ce30824a917a2fcfa2",
|
||||
"hash": "fa80063e1d74810a551c7f01397b126868a1a7f7b306859182b033aa4a2696d4",
|
||||
"firstSeen": "1513160863",
|
||||
"lastUpdated": "1565952466",
|
||||
"updateCount": 13,
|
||||
"lastUpdated": "1578902784",
|
||||
"updateCount": 14,
|
||||
"authorCount": 5
|
||||
}
|
||||
},
|
||||
@ -6747,16 +6738,15 @@
|
||||
"example": "var rearged = rearg(\n function(a, b, c) {\n return [a, b, c];\n },\n [2, 0, 1]\n);\nrearged('b', 'c', 'a'); // ['a', 'b', 'c']"
|
||||
},
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "5f2f2e33d269de787a1aaa245c6324030cc5cbe8345b46352a218f3f2453c220",
|
||||
"hash": "cb2326c19a1292426193785d4cf2c47b5e8d83a99edb7f3415f8c4e057f6a70b",
|
||||
"firstSeen": "1517144661",
|
||||
"lastUpdated": "1565681352",
|
||||
"updateCount": 6,
|
||||
"lastUpdated": "1578902791",
|
||||
"updateCount": 7,
|
||||
"authorCount": 4
|
||||
}
|
||||
},
|
||||
@ -6922,7 +6912,7 @@
|
||||
"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]"
|
||||
},
|
||||
@ -6932,10 +6922,10 @@
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "c1542907e6295eb81df918174c247a65d73c8daccc56769f2eb32d609b7846fc",
|
||||
"hash": "069472d018c3102412dafc2ae8ec6e9396e53c01d0073079f2e3f1ac3c99b6e9",
|
||||
"firstSeen": "1513521691",
|
||||
"lastUpdated": "1578058637",
|
||||
"updateCount": 79,
|
||||
"lastUpdated": "1578253557",
|
||||
"updateCount": 80,
|
||||
"authorCount": 6
|
||||
}
|
||||
},
|
||||
@ -7436,7 +7426,7 @@
|
||||
"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"
|
||||
},
|
||||
@ -7448,10 +7438,10 @@
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "6dd4c6a51d2c80fa4768c95ae01c16a8359c4140bcad28c7fde0cecd72d7d3e2",
|
||||
"hash": "24b93b68a59b49f245590930fed6fb82e286ce09f90e292466cde63c1784c347",
|
||||
"firstSeen": "1514645161",
|
||||
"lastUpdated": "1578058637",
|
||||
"updateCount": 24,
|
||||
"lastUpdated": "1578253557",
|
||||
"updateCount": 25,
|
||||
"authorCount": 5
|
||||
}
|
||||
},
|
||||
@ -7673,18 +7663,18 @@
|
||||
"codeBlocks": {
|
||||
"es6": "const spreadOver = fn => argsArr => fn(...argsArr);",
|
||||
"es5": "function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread(); }\n\nfunction _nonIterableSpread() { throw new TypeError(\"Invalid attempt to spread non-iterable instance\"); }\n\nfunction _iterableToArray(iter) { if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === \"[object Arguments]\") return Array.from(iter); }\n\nfunction _arrayWithoutHoles(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } }\n\nvar spreadOver = function spreadOver(fn) {\n return function (argsArr) {\n return fn.apply(void 0, _toConsumableArray(argsArr));\n };\n};",
|
||||
"example": "const arrayMax = spreadOver(Math.max);\narrayMax([1, 2, 3]); // 3"
|
||||
"example": "const arrayMax = spreadOver(Math.max);\r\narrayMax([1, 2, 3]); // 3"
|
||||
},
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "53c9bc4c5b6a5131f5dd8591c10e5eac376cfd96715015d783d8466d49ed0058",
|
||||
"hash": "b94cbdec64a2897b1a193d5fd32eeb59b315ea590d609a50b7fe50012b1d4ce4",
|
||||
"firstSeen": "1513910037",
|
||||
"lastUpdated": "1565681352",
|
||||
"updateCount": 12,
|
||||
"lastUpdated": "1578902735",
|
||||
"updateCount": 13,
|
||||
"authorCount": 6
|
||||
}
|
||||
},
|
||||
@ -8550,16 +8540,15 @@
|
||||
"example": "['6', '8', '10'].map(unary(parseInt)); // [6, 8, 10]"
|
||||
},
|
||||
"tags": [
|
||||
"adapter",
|
||||
"function",
|
||||
"intermediate"
|
||||
"beginner"
|
||||
]
|
||||
},
|
||||
"meta": {
|
||||
"hash": "73046804bd1b91d397ee382d19eb59798f17319c1acf74393a550286be8cf087",
|
||||
"hash": "f0eda594028997293121b8afca105772ce002f9fe0d5642ffd41c3167fd6b4f1",
|
||||
"firstSeen": "1516792952",
|
||||
"lastUpdated": "1565681352",
|
||||
"updateCount": 3,
|
||||
"lastUpdated": "1578902854",
|
||||
"updateCount": 4,
|
||||
"authorCount": 2
|
||||
}
|
||||
},
|
||||
|
||||
@ -7,11 +7,11 @@ Given a key and a set of arguments, call them when given a context. Primarily us
|
||||
|
||||
Use a closure to call a stored key with stored arguments.
|
||||
|
||||
```js
|
||||
```js
|
||||
const call = (key, ...args) => context => context[key](...args);
|
||||
```
|
||||
|
||||
```js
|
||||
```js
|
||||
Promise.resolve([1, 2, 3])
|
||||
.then(call('map', x => 2 * x))
|
||||
.then(console.log); // [ 2, 4, 6 ]
|
||||
|
||||
@ -7,11 +7,11 @@ Changes a function that accepts an array into a variadic function.
|
||||
|
||||
Given a function, return a closure that collects all inputs into an array-accepting function.
|
||||
|
||||
```js
|
||||
```js
|
||||
const collectInto = fn => (...args) => fn(args);
|
||||
```
|
||||
|
||||
```js
|
||||
```js
|
||||
const Pall = collectInto(Promise.all.bind(Promise));
|
||||
let p1 = Promise.resolve(1);
|
||||
let p2 = Promise.resolve(2);
|
||||
|
||||
@ -20,8 +20,8 @@ const deepClone = obj => {
|
||||
return Array.isArray(obj) && obj.length
|
||||
? (clone.length = obj.length) && Array.from(clone)
|
||||
: Array.isArray(obj)
|
||||
? Array.from(obj)
|
||||
: clone;
|
||||
? Array.from(obj)
|
||||
: clone;
|
||||
};
|
||||
```
|
||||
|
||||
|
||||
@ -14,13 +14,13 @@ const deepMapKeys = (obj, f) =>
|
||||
Array.isArray(obj)
|
||||
? obj.map(val => deepMapKeys(val, f))
|
||||
: typeof obj === 'object'
|
||||
? Object.keys(obj).reduce((acc, current) => {
|
||||
? Object.keys(obj).reduce((acc, current) => {
|
||||
const val = obj[current];
|
||||
acc[f(current)] =
|
||||
val !== null && typeof val === 'object' ? deepMapKeys(val, f) : (acc[f(current)] = val);
|
||||
return acc;
|
||||
}, {})
|
||||
: obj;
|
||||
: obj;
|
||||
```
|
||||
|
||||
```js
|
||||
|
||||
@ -13,9 +13,9 @@ const dig = (obj, target) =>
|
||||
target in obj
|
||||
? obj[target]
|
||||
: Object.values(obj).reduce((acc, val) => {
|
||||
if (acc !== undefined) return acc;
|
||||
if (typeof val === 'object') return dig(val, target);
|
||||
}, undefined);
|
||||
if (acc !== undefined) return acc;
|
||||
if (typeof val === 'object') return dig(val, target);
|
||||
}, undefined);
|
||||
```
|
||||
|
||||
```js
|
||||
|
||||
@ -14,11 +14,11 @@ Throws an exception if `n` is a negative number.
|
||||
const factorial = n =>
|
||||
n < 0
|
||||
? (() => {
|
||||
throw new TypeError('Negative numbers are not allowed!');
|
||||
})()
|
||||
throw new TypeError('Negative numbers are not allowed!');
|
||||
})()
|
||||
: n <= 1
|
||||
? 1
|
||||
: n * factorial(n - 1);
|
||||
? 1
|
||||
: n * factorial(n - 1);
|
||||
```
|
||||
|
||||
```js
|
||||
|
||||
@ -7,11 +7,11 @@ 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.
|
||||
|
||||
```js
|
||||
```js
|
||||
const flip = fn => (first, ...rest) => fn(...rest, first);
|
||||
```
|
||||
|
||||
```js
|
||||
```js
|
||||
let a = { name: 'John Smith' };
|
||||
let b = {};
|
||||
const mergeFrom = flip(Object.assign);
|
||||
|
||||
@ -12,10 +12,10 @@ const getMeridiemSuffixOfInteger = num =>
|
||||
num === 0 || num === 24
|
||||
? 12 + 'am'
|
||||
: num === 12
|
||||
? 12 + 'pm'
|
||||
: num < 12
|
||||
? (num % 12) + 'am'
|
||||
: (num % 12) + 'pm';
|
||||
? 12 + 'pm'
|
||||
: num < 12
|
||||
? (num % 12) + 'am'
|
||||
: (num % 12) + 'pm';
|
||||
```
|
||||
|
||||
```js
|
||||
|
||||
@ -10,13 +10,9 @@ Use `Array.prototype.some()` to check if all distinct values are contained in th
|
||||
Return `false` if the count of any element is greater in the first array than the second one, `true` otherwise.
|
||||
|
||||
```js
|
||||
|
||||
const isContainedIn = (a, b) => {
|
||||
for (const v of new Set(a)) {
|
||||
if (
|
||||
!b.some(e => e === v) ||
|
||||
a.filter(e => e === v).length > b.filter(e => e === v).length
|
||||
)
|
||||
if (!b.some(e => e === v) || a.filter(e => e === v).length > b.filter(e => e === v).length)
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
|
||||
@ -11,14 +11,15 @@ 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,
|
||||
''
|
||||
);
|
||||
```
|
||||
|
||||
@ -10,13 +10,14 @@ 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;
|
||||
}, '')
|
||||
: '';
|
||||
};
|
||||
```
|
||||
|
||||
@ -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)
|
||||
})();
|
||||
```
|
||||
|
||||
@ -9,13 +9,12 @@ 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);
|
||||
}, [])
|
||||
: [];
|
||||
```
|
||||
|
||||
|
||||
@ -12,14 +12,15 @@ 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
|
||||
|
||||
@ -7,11 +7,11 @@ Takes a variadic function and returns a closure that accepts an array of argumen
|
||||
|
||||
Use closures and the spread operator (`...`) to map the array of arguments to the inputs of the function.
|
||||
|
||||
```js
|
||||
```js
|
||||
const spreadOver = fn => argsArr => fn(...argsArr);
|
||||
```
|
||||
|
||||
```js
|
||||
```js
|
||||
const arrayMax = spreadOver(Math.max);
|
||||
arrayMax([1, 2, 3]); // 3
|
||||
```
|
||||
|
||||
61
test/_30s.js
61
test/_30s.js
@ -199,8 +199,8 @@ const deepClone = obj => {
|
||||
return Array.isArray(obj) && obj.length
|
||||
? (clone.length = obj.length) && Array.from(clone)
|
||||
: Array.isArray(obj)
|
||||
? Array.from(obj)
|
||||
: clone;
|
||||
? Array.from(obj)
|
||||
: clone;
|
||||
};
|
||||
const deepFlatten = arr => [].concat(...arr.map(v => (Array.isArray(v) ? deepFlatten(v) : v)));
|
||||
const deepFreeze = obj =>
|
||||
@ -212,13 +212,13 @@ const deepMapKeys = (obj, f) =>
|
||||
Array.isArray(obj)
|
||||
? obj.map(val => deepMapKeys(val, f))
|
||||
: typeof obj === 'object'
|
||||
? Object.keys(obj).reduce((acc, current) => {
|
||||
? Object.keys(obj).reduce((acc, current) => {
|
||||
const val = obj[current];
|
||||
acc[f(current)] =
|
||||
val !== null && typeof val === 'object' ? deepMapKeys(val, f) : (acc[f(current)] = val);
|
||||
return acc;
|
||||
}, {})
|
||||
: obj;
|
||||
: obj;
|
||||
const defaults = (obj, ...defs) => Object.assign({}, obj, ...defs.reverse(), obj);
|
||||
const defer = (fn, ...args) => setTimeout(fn, 1, ...args);
|
||||
const degreesToRads = deg => (deg * Math.PI) / 180.0;
|
||||
@ -240,9 +240,9 @@ const dig = (obj, target) =>
|
||||
target in obj
|
||||
? obj[target]
|
||||
: Object.values(obj).reduce((acc, val) => {
|
||||
if (acc !== undefined) return acc;
|
||||
if (typeof val === 'object') return dig(val, target);
|
||||
}, undefined);
|
||||
if (acc !== undefined) return acc;
|
||||
if (typeof val === 'object') return dig(val, target);
|
||||
}, undefined);
|
||||
const digitize = n => [...`${n}`].map(i => parseInt(i));
|
||||
const distance = (x0, y0, x1, y1) => Math.hypot(x1 - x0, y1 - y0);
|
||||
const drop = (arr, n = 1) => arr.slice(n);
|
||||
@ -314,11 +314,11 @@ const extendHex = shortHex =>
|
||||
const factorial = n =>
|
||||
n < 0
|
||||
? (() => {
|
||||
throw new TypeError('Negative numbers are not allowed!');
|
||||
})()
|
||||
throw new TypeError('Negative numbers are not allowed!');
|
||||
})()
|
||||
: n <= 1
|
||||
? 1
|
||||
: n * factorial(n - 1);
|
||||
? 1
|
||||
: n * factorial(n - 1);
|
||||
const fibonacci = n =>
|
||||
Array.from({ length: n }).reduce(
|
||||
(acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i),
|
||||
@ -424,10 +424,10 @@ const getMeridiemSuffixOfInteger = num =>
|
||||
num === 0 || num === 24
|
||||
? 12 + 'am'
|
||||
: num === 12
|
||||
? 12 + 'pm'
|
||||
: num < 12
|
||||
? (num % 12) + 'am'
|
||||
: (num % 12) + 'pm';
|
||||
? 12 + 'pm'
|
||||
: num < 12
|
||||
? (num % 12) + 'am'
|
||||
: (num % 12) + 'pm';
|
||||
const getScrollPosition = (el = window) => ({
|
||||
x: el.pageXOffset !== undefined ? el.pageXOffset : el.scrollLeft,
|
||||
y: el.pageYOffset !== undefined ? el.pageYOffset : el.scrollTop
|
||||
@ -590,10 +590,7 @@ const isBrowser = () => ![typeof window, typeof document].includes('undefined');
|
||||
const isBrowserTabFocused = () => !document.hidden;
|
||||
const isContainedIn = (a, b) => {
|
||||
for (const v of new Set(a)) {
|
||||
if (
|
||||
!b.some(e => e === v) ||
|
||||
a.filter(e => e === v).length > b.filter(e => e === v).length
|
||||
)
|
||||
if (!b.some(e => e === v) || a.filter(e => e === v).length > b.filter(e => e === v).length)
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
@ -677,8 +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 = ',') =>
|
||||
@ -804,10 +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) => {
|
||||
@ -1039,9 +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) =>
|
||||
@ -1119,10 +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({
|
||||
|
||||
@ -512,8 +512,8 @@
|
||||
" return Array.isArray(obj) && obj.length",
|
||||
" ? (clone.length = obj.length) && Array.from(clone)",
|
||||
" : Array.isArray(obj)",
|
||||
" ? Array.from(obj)",
|
||||
" : clone;",
|
||||
" ? Array.from(obj)",
|
||||
" : clone;",
|
||||
"};"
|
||||
],
|
||||
"description": "Creates a deep clone of an object.\n\nUse recursion.\nCheck if the passed object is `null` and, if so, return `null`.\nUse `Object.assign()` and an empty object (`{}`) to create a shallow clone of the original.\nUse `Object.keys()` and `Array.prototype.forEach()` to determine which key-value pairs need to be deep cloned.\n"
|
||||
@ -549,13 +549,13 @@
|
||||
" Array.isArray(obj)",
|
||||
" ? obj.map(val => deepMapKeys(val, f))",
|
||||
" : typeof obj === 'object'",
|
||||
" ? Object.keys(obj).reduce((acc, current) => {",
|
||||
" ? Object.keys(obj).reduce((acc, current) => {",
|
||||
" const val = obj[current];",
|
||||
" acc[f(current)] =",
|
||||
" val !== null && typeof val === 'object' ? deepMapKeys(val, f) : (acc[f(current)] = val);",
|
||||
" return acc;",
|
||||
" }, {})",
|
||||
" : obj;"
|
||||
" : obj;"
|
||||
],
|
||||
"description": "Deep maps an object's keys.\n\nCreates an object with the same values as the provided object and keys generated by running the provided function for each key.\nUse `Object.keys(obj)` to iterate over the object's keys. \nUse `Array.prototype.reduce()` to create a new object with the same values and mapped keys using `fn`.\n"
|
||||
},
|
||||
@ -631,9 +631,9 @@
|
||||
" target in obj",
|
||||
" ? obj[target]",
|
||||
" : Object.values(obj).reduce((acc, val) => {",
|
||||
" if (acc !== undefined) return acc;",
|
||||
" if (typeof val === 'object') return dig(val, target);",
|
||||
" }, undefined);"
|
||||
" if (acc !== undefined) return acc;",
|
||||
" if (typeof val === 'object') return dig(val, target);",
|
||||
" }, undefined);"
|
||||
],
|
||||
"description": "Returns the target value in a nested JSON object, based on the given key.\n\nUse the `in` operator to check if `target` exists in `obj`.\nIf found, return the value of `obj[target]`, otherwise use `Object.values(obj)` and `Array.prototype.reduce()` to recursively call `dig` on each nested object until the first matching key/value pair is found.\n"
|
||||
},
|
||||
@ -795,11 +795,11 @@
|
||||
"const factorial = n =>",
|
||||
" n < 0",
|
||||
" ? (() => {",
|
||||
" throw new TypeError('Negative numbers are not allowed!');",
|
||||
" })()",
|
||||
" throw new TypeError('Negative numbers are not allowed!');",
|
||||
" })()",
|
||||
" : n <= 1",
|
||||
" ? 1",
|
||||
" : n * factorial(n - 1);"
|
||||
" ? 1",
|
||||
" : n * factorial(n - 1);"
|
||||
],
|
||||
"description": "Calculates the factorial of a number.\n\nUse recursion.\nIf `n` is less than or equal to `1`, return `1`.\nOtherwise, return the product of `n` and the factorial of `n - 1`.\nThrows an exception if `n` is a negative number.\n"
|
||||
},
|
||||
@ -1067,10 +1067,10 @@
|
||||
" num === 0 || num === 24",
|
||||
" ? 12 + 'am'",
|
||||
" : num === 12",
|
||||
" ? 12 + 'pm'",
|
||||
" : num < 12",
|
||||
" ? (num % 12) + 'am'",
|
||||
" : (num % 12) + 'pm';"
|
||||
" ? 12 + 'pm'",
|
||||
" : num < 12",
|
||||
" ? (num % 12) + 'am'",
|
||||
" : (num % 12) + 'pm';"
|
||||
],
|
||||
"description": "Converts an integer to a suffixed string, adding `am` or `pm` based on its value.\n\nUse the modulo operator (`%`) and conditional checks to transform an integer to a stringified 12-hour format with meridiem suffix.\n"
|
||||
},
|
||||
@ -1509,10 +1509,7 @@
|
||||
"body": [
|
||||
"const isContainedIn = (a, b) => {",
|
||||
" for (const v of new Set(a)) {",
|
||||
" if (",
|
||||
" !b.some(e => e === v) ||",
|
||||
" a.filter(e => e === v).length > b.filter(e => e === v).length",
|
||||
" )",
|
||||
" if (!b.some(e => e === v) || a.filter(e => e === v).length > b.filter(e => e === v).length)",
|
||||
" return false;",
|
||||
" }",
|
||||
" return true;",
|
||||
@ -1788,8 +1785,8 @@
|
||||
" i === arr.length - 2",
|
||||
" ? acc + val + end",
|
||||
" : i === arr.length - 1",
|
||||
" ? acc + val",
|
||||
" : acc + val + separator,",
|
||||
" ? acc + val",
|
||||
" : acc + val + separator,",
|
||||
" ''",
|
||||
" );"
|
||||
],
|
||||
@ -2131,10 +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;",
|
||||
" }, '')",
|
||||
" : '';",
|
||||
"};"
|
||||
],
|
||||
@ -2648,9 +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"
|
||||
@ -2848,10 +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"
|
||||
},
|
||||
|
||||
Reference in New Issue
Block a user