---
name: "Catmandu::Fix::retain_field"
section: "3pm"
platform: "linux"
package: "libcatmandu-perl"
version: "1.2024-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Catmandu::Fix::retain_field"
---

# Catmandu::Fix::retain\_field(3pm)

delete everything from a field except

## NAME

Catmandu::Fix::retain\_field - delete everything from a field except

## DEPRECIATION NOTICE

This fix is deprecated, Please use Catmandu::Fix::retain instead.

## SYNOPSIS

```
   # Delete every key from foo except bar
   retain_field(foo.bar)
```

## SEE ALSO

Catmandu::Fix