# map.get_or_null · Rell standard library · Chromia Docs (concept)

> pure function get_ or_ null(key: K): V? Get the value associated with the given key in this map. Parameters key — the key to look up Returns the value asso

Source: https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/root/map/get_or_null/

FUNCTION

# map.get\_or\_null

```signature
pure function get_or_null(key: K): V?
```

Get the value associated with the given key in this map.

**Parameters**

* **key** — the key to look up

**Returns**

the value associated with the given key in this map, or `null` if the key is not found

Since 0.11.0

[View this page on docs.chromia.com](https://docs.chromia.com/pages/rell-stdlib/-rell%20-system%20-library/%5Broot%5D/map/get_or_null.html)Generated API reference, mirrored from the live docs