8ee50178f3
Correct: `Array.from()` (it’s a static method) Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method) This patch uses the common `#` syntax to denote `.prototype.`.
13 lines
360 B
Markdown
13 lines
360 B
Markdown
### reject
|
|
|
|
Takes a predicate and array, like `Array.prototype.filter()`, but only keeps `x` if `pred(x) === false`.
|
|
|
|
```js
|
|
const reject = (pred, array) => array.filter((...args) => !pred(...args));
|
|
```
|
|
|
|
```js
|
|
reject(x => x % 2 === 0, [1, 2, 3, 4, 5]); // [1, 3, 5]
|
|
reject(word => word.length > 4, ['Apple', 'Pear', 'Kiwi', 'Banana']); // ['Pear', 'Kiwi']
|
|
```
|