github.com/jaredpalmer/terraform@v1.1.0-alpha20210908.0.20210911170307-88705c943a03/website/docs/language/functions/keys.html.md (about)

     1  ---
     2  layout: "language"
     3  page_title: "keys - Functions - Configuration Language"
     4  sidebar_current: "docs-funcs-collection-keys"
     5  description: |-
     6    The keys function returns a list of the keys in a given map.
     7  ---
     8  
     9  # `keys` Function
    10  
    11  `keys` takes a map and returns a list containing the keys from that map.
    12  
    13  The keys are returned in lexicographical order, ensuring that the result will
    14  be identical as long as the keys in the map don't change.
    15  
    16  ## Examples
    17  
    18  ```
    19  > keys({a=1, c=2, d=3})
    20  [
    21    "a",
    22    "c",
    23    "d",
    24  ]
    25  ```
    26  
    27  ## Related Functions
    28  
    29  * [`values`](./values.html) returns a list of the _values_ from a map.