@extra-array/shift-update/README.md

Removes first value.

Removes first value.
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> Alternatives: [shift], [shift$].<br>
> Similar: [push], [pop], [shift], [unshift].

> This is part of package [extra-array].

[extra-array]: https://www.npmjs.com/package/extra-array

<br>

```javascript
array.shift$(x);
// x: an array (updated)
// → x
```

```javascript
const array = require("extra-array");

var x = [1, 2, 3];
array.shift$(x);
// [2, 3]

x;
// [2, 3]

var x = [1, 2, 3, 4];
array.shift$(x);
// [2, 3, 4]
```

<br>
<br>


## References

- [Array.prototype.shift: MDN web docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/shift)

[shift]: https://github.com/nodef/extra-array/wiki/shift
[shift$]: https://github.com/nodef/extra-array/wiki/shift$
[push]: https://github.com/nodef/extra-array/wiki/push
[pop]: https://github.com/nodef/extra-array/wiki/pop
[unshift]: https://github.com/nodef/extra-array/wiki/unshift