---
name: "List::Objects::WithUtils::Role::Hash::Immutable"
section: "3pm"
platform: "linux"
package: "liblist-objects-withutils-perl"
version: "2.028003-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/List::Objects::WithUtils::Role::Hash::Immutable"
---

# List::Objects::WithUtils::Role::Hash::Immutable(3pm)

Immutable hash behavior

## NAME

List::Objects::WithUtils::Role::Hash::Immutable - Immutable hash behavior

## SYNOPSIS

```
  # Via List::Objects::WithUtils::Hash::Immutable ->
  use List::Objects::WithUtils 'immhash';
  my $hash = immhash( foo => 1, bar => 2 );
  $hash->set(foo => 3);  # dies
```

## DESCRIPTION

This role adds immutable behavior to List::Objects::WithUtils::Role::Hash consumers.

The following methods are not available and will throw an exception:

```
  clear
  set
  maybe_set
  delete
```

(The backing hash is also marked read-only.)

See List::Objects::WithUtils::Hash::Immutable for a consumer implementation.

## AUTHOR

Jon Portnoy \<avenj@cobaltirc.org\>