See for example the `shuffle` function, which is provided by the environment.
Go to the [rhai book](https://schungx.github.io/rhai/language/index.html) for the language reference.
Go to the [rhai book](https://rhai.rs/book/) for the language reference.
### Common errors:
* When taking more cards than are available from a pile, `()` (null or undefined) is returned, that happens for example when too many people try to play a game where a specific number of cards from a deck are given to each player, and there are too many players for the amount of cards in the deck
