@extra-array/is-empty/README.md

Checks is array is empty.

Checks is array is empty.
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> Similar: [index], [indexRange], [size], [isEmpty].

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

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

<br>

```javascript
array.isEmpty(x);
// x: an array
```

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

var x = [1, 2, 3];
array.isEmpty(x);
// false

var x = [];
array.isEmpty(x);
// true
```

<br>
<br>


## References

- [Data.List.null: Haskell](https://hackage.haskell.org/package/base-4.14.0.0/docs/Data-List.html#v:null)
- [List.isEmpty: elm](https://package.elm-lang.org/packages/elm/core/latest/List#isEmpty)
- [Array.length: MDN web docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length)
- [Array.isEmpty: sugarjs](https://sugarjs.com/docs/#/Array/isEmpty)

[index]: https://github.com/nodef/extra-array/wiki/index
[indexRange]: https://github.com/nodef/extra-array/wiki/indexRange
[size]: https://github.com/nodef/extra-array/wiki/size
[isEmpty]: https://github.com/nodef/extra-array/wiki/isEmpty