@extra-array/cartesian-product/README.md

Lists cartesian product of arrays.

Lists cartesian product of arrays.
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> Similar: [cartesianProduct], [zip].

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

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

<br>

```javascript
array.cartesianProduct(xs, [fm]);
// xs: arrays
// fm: map function (vs, i)
```

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

var x = [1, 2, 3];
var y = [10, 20, 30];
array.cartesianProduct([x, y]);
// [
//   [ 1, 10 ], [ 1, 20 ],
//   [ 1, 30 ], [ 2, 10 ],
//   [ 2, 20 ], [ 2, 30 ],
//   [ 3, 10 ], [ 3, 20 ],
//   [ 3, 30 ]
// ]

array.cartesianProduct([x, y], ([a, b]) => a + b);
// [
//   11, 21, 31, 12, 22,
//   32, 13, 23, 33
// ]
```

<br>
<br>


## References

- [Data.Set.cartesianProduct: Haskell](http://hackage.haskell.org/package/containers-0.6.2.1/docs/Data-Set.html#v:cartesianProduct)
- [List-Extra.cartesianProduct: elm](https://package.elm-lang.org/packages/elm-community/list-extra/latest/List-Extra#cartesianProduct)
- [itertools.product: Python](https://docs.python.org/3/library/itertools.html#itertools.product)
- [Guava.Lists: Java](https://guava.dev/releases/23.5-jre/api/docs/com/google/common/collect/Lists.html#cartesianProduct-java.util.List-)
- [fast-cartesian-product: @fisker](https://www.npmjs.com/package/fast-cartesian-product)
- [cartesian-product: @izaakschroeder](https://www.npmjs.com/package/cartesian-product)
- [cartesian: @alexindigo](https://www.npmjs.com/package/cartesian)

[cartesianProduct]: https://github.com/nodef/extra-array/wiki/cartesianProduct
[zip]: https://github.com/nodef/extra-array/wiki/zip