| --- |
| page_title: setintersection - Functions - Configuration Language |
| 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 |
| |
| ``` |
| > 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`](/language/functions/contains) tests whether a given list or set contains |
| a given element value. |
| * [`setproduct`](/language/functions/setproduct) computes the _Cartesian product_ of multiple |
| sets. |
| * [`setsubtract`](/language/functions/setsubtract) computes the _relative complement_ of two sets |
| * [`setunion`](/language/functions/setunion) computes the _union_ of |
| multiple sets. |
