Hcl2 input variables, local variables and functions (#8588)
Mainly redefine or reused what Terraform did.
* allow to used `variables`, `variable` and `local` blocks
* import the following functions and their docs from Terraform: abs, abspath, basename, base64decode, base64encode, bcrypt, can, ceil, chomp, chunklist, cidrhost, cidrnetmask, cidrsubnet, cidrsubnets, coalesce, coalescelist, compact, concat, contains, convert, csvdecode, dirname, distinct, element, file, fileexists, fileset, flatten, floor, format, formatdate, formatlist, indent, index, join, jsondecode, jsonencode, keys, length, log, lookup, lower, max, md5, merge, min, parseint, pathexpand, pow, range, reverse, rsadecrypt, setintersection, setproduct, setunion, sha1, sha256, sha512, signum, slice, sort, split, strrev, substr, timestamp, timeadd, title, trim, trimprefix, trimspace, trimsuffix, try, upper, urlencode, uuidv4, uuidv5, values, yamldecode, yamlencode, zipmap.
2020-02-06 11:49:21 +01:00
|
|
|
---
|
2020-03-18 18:46:47 -04:00
|
|
|
page_title: keys - Functions - Configuration Language
|
2020-04-02 19:39:47 -04:00
|
|
|
sidebar_title: keys
|
2020-03-18 18:46:47 -04:00
|
|
|
description: The keys function returns a list of the keys in a given map.
|
Hcl2 input variables, local variables and functions (#8588)
Mainly redefine or reused what Terraform did.
* allow to used `variables`, `variable` and `local` blocks
* import the following functions and their docs from Terraform: abs, abspath, basename, base64decode, base64encode, bcrypt, can, ceil, chomp, chunklist, cidrhost, cidrnetmask, cidrsubnet, cidrsubnets, coalesce, coalescelist, compact, concat, contains, convert, csvdecode, dirname, distinct, element, file, fileexists, fileset, flatten, floor, format, formatdate, formatlist, indent, index, join, jsondecode, jsonencode, keys, length, log, lookup, lower, max, md5, merge, min, parseint, pathexpand, pow, range, reverse, rsadecrypt, setintersection, setproduct, setunion, sha1, sha256, sha512, signum, slice, sort, split, strrev, substr, timestamp, timeadd, title, trim, trimprefix, trimspace, trimsuffix, try, upper, urlencode, uuidv4, uuidv5, values, yamldecode, yamlencode, zipmap.
2020-02-06 11:49:21 +01:00
|
|
|
---
|
|
|
|
|
|
|
|
# `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
|
|
|
|
|
2020-05-29 17:12:05 -04:00
|
|
|
```shell-session
|
Hcl2 input variables, local variables and functions (#8588)
Mainly redefine or reused what Terraform did.
* allow to used `variables`, `variable` and `local` blocks
* import the following functions and their docs from Terraform: abs, abspath, basename, base64decode, base64encode, bcrypt, can, ceil, chomp, chunklist, cidrhost, cidrnetmask, cidrsubnet, cidrsubnets, coalesce, coalescelist, compact, concat, contains, convert, csvdecode, dirname, distinct, element, file, fileexists, fileset, flatten, floor, format, formatdate, formatlist, indent, index, join, jsondecode, jsonencode, keys, length, log, lookup, lower, max, md5, merge, min, parseint, pathexpand, pow, range, reverse, rsadecrypt, setintersection, setproduct, setunion, sha1, sha256, sha512, signum, slice, sort, split, strrev, substr, timestamp, timeadd, title, trim, trimprefix, trimspace, trimsuffix, try, upper, urlencode, uuidv4, uuidv5, values, yamldecode, yamlencode, zipmap.
2020-02-06 11:49:21 +01:00
|
|
|
> keys({a=1, c=2, d=3})
|
|
|
|
[
|
|
|
|
"a",
|
|
|
|
"c",
|
|
|
|
"d",
|
|
|
|
]
|
|
|
|
```
|
|
|
|
|
|
|
|
## Related Functions
|
|
|
|
|
2021-01-15 09:18:39 -08:00
|
|
|
- [`values`](/docs/templates/hcl_templates/functions/collection/values) returns a list of the _values_ from a map.
|