`Array.prototype.filter` seems more versatile (although it doesn't mutate the original array) since it removes elements based on a function:
```js [1, 2, 3, 2, 1].filter(n => n !== 1); // [2, 3, 2] ``` Since the method is named `toggle`, what happens when you call it on the same array twice? Do you get the removed elements back? ```js const arr = [1, 2, 3, 2, 1].toggle(1) // mutates the original array removing 1, resulting in [2, 3, 2] arr.toggle(1); // ??? ``` On Fri, Feb 7, 2020 at 3:49 AM manuelbarzi <[email protected]> wrote: > just a proposal to provide this functionality into array, allowing to add > / remove items in a toggling mechanism shortcut, avoiding the need to do > traversing to locate the indexes and remove them next (i.e. by means of a > polyfill or any other approach). > > ```js > [1, 2, 3, 2, 1].toggle(1) // mutates the original array removing 1, > resulting in [2, 3, 2] > ``` > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss >
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