40 lines
1.2 KiB
Plaintext

---
page_title: setintersection - Functions - Configuration Language
sidebar_title: setintersection
description: |-
The setintersection function takes multiple sets and produces a single set
containing only the elements that all of the given sets have in common.
---
# `setintersection` Function
The `setintersection` function takes multiple sets and produces a single set
containing only the elements that all of the given sets have in common.
In other words, it computes the
[intersection](<https://en.wikipedia.org/wiki/Intersection_(set_theory)>) of the sets.
```hcl
setintersection(sets...)
```
## Examples
```shell-session
> setintersection(["a", "b"], ["b", "c"], ["b", "d"])
[
"b",
]
```
The given arguments are converted to sets, so the result is also a set and
the ordering of the given elements is not preserved.
## Related Functions
- [`contains`](/docs/templates/hcl_templates/functions/collection/contains) tests whether a given list or set contains
a given element value.
- [`setproduct`](/docs/templates/hcl_templates/functions/collection/setproduct) computes the _Cartesian product_ of multiple
sets.
- [`setunion`](/docs/templates/hcl_templates/functions/collection/setunion) computes the _union_ of
multiple sets.