| --- |
| page_title: keys - Functions - Configuration Language |
| description: The keys function returns a list of the keys in a given map. |
| --- |
| |
| # `keys` Function |
| |
| `keys` takes a map and returns a list containing the keys from that map. |
| |
| The keys are returned in lexicographical order, ensuring that the result will |
| be identical as long as the keys in the map don't change. |
| |
| ## Examples |
| |
| ``` |
| > keys({a=1, c=2, d=3}) |
| [ |
| "a", |
| "c", |
| "d", |
| ] |
| ``` |
| |
| ## Related Functions |
| |
| * [`values`](/terraform/language/functions/values) returns a list of the _values_ from a map. |
