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README.md
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README.md
@ -25,7 +25,6 @@
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* [Count occurrences of a value in array](#count-occurrences-of-a-value-in-array)
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* [Deep flatten array](#deep-flatten-array)
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* [Drop elements in array](#drop-elements-in-array)
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* [Fill array](#fill-array)
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* [Filter out non unique values in an array](#filter-out-non-unique-values-in-an-array)
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* [Flatten array up to depth](#flatten-array-up-to-depth)
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* [Flatten array](#flatten-array)
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@ -287,7 +286,7 @@ const chunk = (arr, size) =>
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Use `Array.filter()` to filter out falsey values (`false`, `null`, `0`, `""`, `undefined`, and `NaN`).
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```js
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const compact = (arr) => arr.filter(v => v);
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const compact = (arr) => arr.filter(Boolean);
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// compact([0, 1, false, 2, '', 3, 'a', 'e'*23, NaN, 's', 34]) -> [ 1, 2, 3, 'a', 's', 34 ]
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```
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@ -332,19 +331,6 @@ const dropElements = (arr, func) => {
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[⬆ back to top](#table-of-contents)
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### Fill array
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Use `Array.map()` to map values between `start` (inclusive) and `end` (exclusive) to `value`.
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Omit `start` to start at the first element and/or `end` to finish at the last.
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```js
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const fillArray = (arr, value, start = 0, end = arr.length) =>
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arr.map((v, i) => i >= start && i < end ? value : v);
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// fillArray([1,2,3,4],'8',1,3) -> [1,'8','8',4]
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```
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[⬆ back to top](#table-of-contents)
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### Filter out non-unique values in an array
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Use `Array.filter()` for an array containing only the unique values.
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@ -1337,11 +1323,14 @@ const getType = v =>
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### Hexcode to RGB
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Use `Array.slice()`, `Array.map()` and `match()` to convert a hexadecimal colorcode (prefixed with `#`) to a string with the RGB values.
|
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Use bitwise right-shift operator and mask bits with `&` (and) operator to convert a hexadecimal color code (prefixed with `#`) to a string with the RGB values.
|
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```js
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const hexToRgb = hex => `rgb(${hex.slice(1).match(/.{2}/g).map(x => parseInt(x, 16)).join()})`
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// hexToRgb('#27ae60') -> 'rgb(39,174,96)'
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const hexToRgb = hex => {
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const h = parseInt(hex.slice(1), 16);
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return `rgb(${h >> 16}, ${(h & 0x00ff00) >> 8}, ${h & 0x0000ff})`;
|
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}
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// hexToRgb('#27ae60') -> 'rgb(39, 174, 96)'
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||||
```
|
||||
|
||||
[⬆ back to top](#table-of-contents)
|
||||
|
||||
@ -1,10 +0,0 @@
|
||||
### Fill array
|
||||
|
||||
Use `Array.map()` to map values between `start` (inclusive) and `end` (exclusive) to `value`.
|
||||
Omit `start` to start at the first element and/or `end` to finish at the last.
|
||||
|
||||
```js
|
||||
const fillArray = (arr, value, start = 0, end = arr.length) =>
|
||||
arr.map((v, i) => i >= start && i < end ? value : v);
|
||||
// fillArray([1,2,3,4],'8',1,3) -> [1,'8','8',4]
|
||||
```
|
||||
@ -34,7 +34,6 @@ escape-regular-expression:utility
|
||||
even-or-odd-number:math
|
||||
factorial:math
|
||||
fibonacci-array-generator:math
|
||||
fill-array:array
|
||||
filter-out-non-unique-values-in-an-array:array
|
||||
flatten-array-up-to-depth:array
|
||||
flatten-array:array
|
||||
|
||||
Reference in New Issue
Block a user