terraform/website/docs/configuration/functions/contains.html.md

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---
layout: "language"
page_title: "contains - Functions - Configuration Language"
sidebar_current: "docs-funcs-collection-contains"
description: |-
The contains function determines whether a list or set contains a given value.
---
# `contains` Function
-> **Note:** This page is about Terraform 0.12 and later. For Terraform 0.11 and
earlier, see
[0.11 Configuration Language: Interpolation Syntax](../../configuration-0-11/interpolation.html).
`contains` determines whether a given list or set contains a given single value
as one of its elements.
```hcl
contains(list, value)
```
## Examples
```
> contains(["a", "b", "c"], "a")
true
> contains(["a", "b", "c"], "d")
false
```