Isn't that just a specific case of Array.prototype.reduce?
```js
const evenNumberCount = [1,2,3,4,5].reduce((acc, val) => { !(val % 2)
&& ++acc; });
```
On Mon, Jan 7, 2019 at 1:12 PM Засим Александр <[email protected]> wrote:
> Hi everyone. This is proposal for Array.prototype.count (or countOf)
> method which allow to count specific elements in an array.
>
> ```js
>
> const evenNumberCount = [1, 2, 3, 4, 5].count(num => num % 2 === 0);
>
> ```
>
> Instead of
>
> ```js
>
> const evenNumberCount = [1, 2, 3, 4, 5].filter(num => num % 2 ===
> 0).length;
>
> ```
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