@extra-array/copy/README.md

Copies part of array to another.

Copies part of array to another.
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> Alternatives: [copy], [copy$].<br>
> Similar: [copy], [copyWithin], [moveWithin].

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

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

<br>

```javascript
array.copy(x, y, [j], [i], [I]);
// x: target array
// y: source array
// j: write index (0)
// i: read start index (0)
// I: read end index (X)
```

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

var x = [1, 2, 3, 4, 5];
var y = [10, 20, 30];
array.copy(x, y);
// [ 10, 20, 30, 4, 5 ]

array.copy(x, y, 1);
// [ 1, 10, 20, 30, 5 ]

array.copy(x, y, 1, 1);
// [ 1, 20, 30, 4, 5 ]

array.copy(x, y, 1, 1, 2);
// [ 1, 20, 3, 4, 5 ]
```

<br>
<br>


## References

- [Array.prototype.copyWithin: MDN web docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/copyWithin)
- [Collections.copy: Java](https://docs.oracle.com/javase/7/docs/api/java/util/Collections.html#copy(java.util.List,%20java.util.List))

[copy]: https://github.com/nodef/extra-array/wiki/copy
[copy$]: https://github.com/nodef/extra-array/wiki/copy$
[copyWithin]: https://github.com/nodef/extra-array/wiki/copyWithin
[moveWithin]: https://github.com/nodef/extra-array/wiki/moveWithin