terraform/website/docs/language/functions/transpose.mdx

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---
page_title: transpose - Functions - Configuration Language
description: |-
The transpose function takes a map of lists of strings and swaps the keys
and values.
---
# `transpose` Function
`transpose` takes a map of lists of strings and swaps the keys and values
to produce a new map of lists of strings.
## Examples
```
> transpose({"a" = ["1", "2"], "b" = ["2", "3"]})
{
"1" = [
"a",
],
"2" = [
"a",
"b",
],
"3" = [
"b",
],
}
```