# list.contains_all · Rell standard library · Chromia Docs (concept)

> pure function contains_ all(values: collection <-T>): boolean Check if this collection contains all elements of another collection. Parameters values — the

Source: https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/root/list/contains_all/

FUNCTION

# list.contains\_all

```signature
pure function contains_all(values: collection<-T>): boolean
```

Check if this collection contains all elements of another collection.

**Parameters**

* **values** — the collection to check against

**Returns**

`true` if this collection contains all elements of the given collection, `false` otherwise

Since 0.9.0

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