nushell/docs/commands/dfr_is-unique.md

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---
title: dfr is-unique
layout: command
version: 0.59.0
---
Creates mask indicating unique values
## Signature
```> dfr is-unique ```
## Examples
Create mask indicating unique values
```shell
> [5 6 6 6 8 8 8] | dfr to-df | dfr is-unique
```