---
name: "Rose::Class"
section: "3pm"
platform: "linux"
package: "librose-object-perl"
version: "0.860-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Rose::Class"
---

# Rose::Class(3pm)

A very simple class base class.

## NAME

Rose::Class - A very simple class base class.

## SYNOPSIS

```
    package MyClass;
    use Rose::Class;
    our @ISA = qw(Rose::Class);
    sub foo { ... }
    ...
    MyClass->foo(...) or die MyClass->error;
    ...
```

## DESCRIPTION

Rose::Class is a generic base class for classes.  It provides a single class method (`"error"`), but may be expanded further in the future.

A class that inherits from Rose::Class is not expected to allow objects of that class to be instantiated, since the namespace for class and object methods is shared.  For example, it is common for Rose::Object-derived classes to have `"error"` methods, but this would conflict with the Rose::Class method of the same name.

## CLASS METHODS

- **error \[ERROR\]**

  Get or set the class-wide error.  By convention, this should be a scalar that stringifies to an error message.  A simple scalar containing a string is the most commonly used value.

## AUTHOR

John C. Siracusa (siracusa@gmail.com)

## LICENSE

Copyright (c) 2010 by John C. Siracusa.  All rights reserved.  This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.