| --- |
| page_title: contains - Functions - Configuration Language |
| description: The contains function determines whether a list or set contains a given value. |
| --- |
| |
| # `contains` Function |
| |
| `contains` determines whether the list, tuple, or set given in its first |
| argument contains at least one element that is equal to the value in the second |
| argument, using the same definition of equality as the `==` operator described in |
| [Equality Operators](/terraform/language/expressions/operators#equality-operators). |
| |
| ```hcl |
| contains(list, value) |
| ``` |
| |
| ## Examples |
| |
| ``` |
| > contains(["a", "b", "c"], "a") |
| true |
| > contains(["a", "b", "c"], "d") |
| false |
| ``` |
