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

Checks if arrays have no value in common.

Checks if arrays have no value in common.
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> Similar: [isUnique], [isDisjoint], [intersection].

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

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

<br>

```javascript
array.isDisjoint(x, y, [fc], [fm]);
// x:  an array
// y:  another array
// fc: compare function (a, b)
// fm: map function (v, i, x)
```
> :stopwatch: Compare function => O(n²).

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

var x = [1, 2, 3, 4];
array.isDisjoint(x, [2, 5]);
// false

array.isDisjoint(x, [-2, -5]);
// true

array.isDisjoint(x, [-2, -5], (a, b) => Math.abs(a) - Math.abs(b));
// false

array.isDisjoint(x, [-2, -5], null, v => Math.abs(v));
// false
```

<br>
<br>


## References

- [Data.Set.disjoint: Haskell](http://hackage.haskell.org/package/containers-0.6.2.1/docs/Data-Set.html#v:disjoint)
- [Set.isdisjoint: Python](https://www.programiz.com/python-programming/methods/set/isdisjoint)

[intersection]: https://github.com/nodef/extra-array/wiki/intersection
[isUnique]: https://github.com/nodef/extra-array/wiki/isUnique
[isDisjoint]: https://github.com/nodef/extra-array/wiki/isDisjoint