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30secondsofcode
2019-10-09 18:11:06 +00:00
parent 6359520626
commit f2b55cdca0
12 changed files with 93 additions and 101 deletions
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1
README.md
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@ -6904,7 +6904,6 @@ const equals = (a, b) => {
if (a === b) return true;
if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime();
if (!a || !b || (typeof a !== 'object' && typeof b !== 'object')) return a === b;
if (a === null || a === undefined || b === null || b === undefined) return false;
if (a.prototype !== b.prototype) return false;
let keys = Object.keys(a);
if (keys.length !== Object.keys(b).length) return false;

16
snippet_data/snippetList.json
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20
snippet_data/snippets.json
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@ -568,7 +568,7 @@
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@ -1637,8 +1637,8 @@
"fileName": "equals.md",
"text": "Performs a deep comparison between two values to determine if they are equivalent.\n\nCheck if the two values are identical, if they are both `Date` objects with the same time, using `Date.getTime()` or if they are both non-object values with an equivalent value (strict comparison).\nCheck if only one value is `null` or `undefined` or if their prototypes differ.\nIf none of the above conditions are met, use `Object.keys()` to check if both values have the same number of keys, then use `Array.prototype.every()` to check if every key in the first value exists in the second one and if they are equivalent by calling this method recursively.\n\n",
"codeBlocks": {
"es6": "const equals = (a, b) => {\n if (a === b) return true;\n if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime();\n if (!a || !b || (typeof a !== 'object' && typeof b !== 'object')) return a === b;\n if (a === null || a === undefined || b === null || b === undefined) return false;\n if (a.prototype !== b.prototype) return false;\n let keys = Object.keys(a);\n if (keys.length !== Object.keys(b).length) return false;\n return keys.every(k => equals(a[k], b[k]));\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 equals = function equals(a, b) {\n if (a === b) return true;\n if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime();\n if (!a || !b || _typeof(a) !== 'object' && _typeof(b) !== 'object') return a === b;\n if (a === null || a === undefined || b === null || b === undefined) return false;\n if (a.prototype !== b.prototype) return false;\n var keys = Object.keys(a);\n if (keys.length !== Object.keys(b).length) return false;\n return keys.every(function (k) {\n return equals(a[k], b[k]);\n });\n};",
"es6": "const equals = (a, b) => {\n if (a === b) return true;\n if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime();\n if (!a || !b || (typeof a !== 'object' && typeof b !== 'object')) return a === b;\n if (a.prototype !== b.prototype) return false;\n let keys = Object.keys(a);\n if (keys.length !== Object.keys(b).length) return false;\n return keys.every(k => equals(a[k], b[k]));\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 equals = function equals(a, b) {\n if (a === b) return true;\n if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime();\n if (!a || !b || _typeof(a) !== 'object' && _typeof(b) !== 'object') return a === b;\n if (a.prototype !== b.prototype) return false;\n var keys = Object.keys(a);\n if (keys.length !== Object.keys(b).length) return false;\n return keys.every(function (k) {\n return equals(a[k], b[k]);\n });\n};",
"example": "equals({ a: [2, { e: 3 }], b: [4], c: 'foo' }, { a: [2, { e: 3 }], b: [4], c: 'foo' }); // true"
},
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@ -1649,7 +1649,7 @@
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1
snippets/checkProp.md
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@ -31,6 +31,7 @@ const checkProp = (predicate, prop) => obj => !!predicate(obj[prop]);
const lengthIs4 = checkProp(l => l === 4, 'length');
lengthIs4([]); // false
lengthIs4([1,2,3,4]); // true

1
snippets/deepClone.md
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@ -11,7 +11,6 @@ Use `Object.assign()` and an empty object (`{}`) to create a shallow clone of th
Use `Object.keys()` and `Array.prototype.forEach()` to determine which key-value pairs need to be deep cloned.
```js
const deepClone = obj => {
if (obj === null) return null;
let clone = Object.assign({}, obj);

1
snippets/deepMapKeys.md
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@ -10,7 +10,6 @@ Use `Object.keys(obj)` to iterate over the object's keys.
Use `Array.prototype.reduce()` to create a new object with the same values and mapped keys using `fn`.
```js
const deepMapKeys = (obj, f) =>
Array.isArray(obj)
? obj.map(val => deepMapKeys(val, f))

1
snippets/dig.md
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@ -9,7 +9,6 @@ Use the `in` operator to check if `target` exists in `obj`.
If 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.
```js
const dig = (obj, target) =>
target in obj
? obj[target]

1
snippets/factorial.md
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@ -11,7 +11,6 @@ Otherwise, return the product of `n` and the factorial of `n - 1`.
Throws an exception if `n` is a negative number.
```js
const factorial = n =>
n < 0
? (() => {

1
snippets/getMeridiemSuffixOfInteger.md
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@ -8,7 +8,6 @@ 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'

1
snippets/join.md
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@ -11,7 +11,6 @@ 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
test/_30s.js
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@ -285,7 +285,6 @@ const equals = (a, b) => {
if (a === b) return true;
if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime();
if (!a || !b || (typeof a !== 'object' && typeof b !== 'object')) return a === b;
if (a === null || a === undefined || b === null || b === undefined) return false;
if (a.prototype !== b.prototype) return false;
let keys = Object.keys(a);
if (keys.length !== Object.keys(b).length) return false;

1
vscode_snippets/snippets.json
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@ -736,7 +736,6 @@
" if (a === b) return true;",
" if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime();",
" if (!a || !b || (typeof a !== 'object' && typeof b !== 'object')) return a === b;",
" if (a === null || a === undefined || b === null || b === undefined) return false;",
" if (a.prototype !== b.prototype) return false;",
" let keys = Object.keys(a);",
" if (keys.length !== Object.keys(b).length) return false;",