> Le 11 janv. 2019 à 14:02, Sultan <[email protected]> a écrit :
>
> Placeholder operator: !
>
> Use in function parameters(maintains arity without creating a named binding):
>
> const foo = (a, b, !) => {}
Today, you can write:
```js
const foo = (a, b, _) => { }
```
Is the complexity added to the language worth the feature?
>
> Use in de-structuring(allows you to capture further along a tuple without
> creating a named binding):
>
> const [!, setState] = useState(0)
You can already write:
```js
const [ , setState] = useState(0)
```
—Claude
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