• NAME
• VERSION
• SYNOPSIS
• DESCRIPTION
• Compatibility with Moose
• Sugary APIs
• Meta object protocols
• Mouse::Meta::Instance
• Role exclusion
• -metaclass in Mouse::Exporter
• Mouse::Meta::Attribute::Native
• Notes about Moose::Cookbook
• SEE ALSO

NAME

Mouse::Spec - To what extent Mouse is compatible with Moose

VERSION

This document describes Mouse version v2.5.10

SYNOPSIS

    use Mouse::Spec;

    printf "Mouse/%s is compatible with Moose/%s\n",
        Mouse::Spec->MouseVersion, Mouse::Spec->MooseVersion;

DESCRIPTION

Mouse is a subset of Moose. This document describes to what extend Mouse is compatible (and incompatible) with Moose.

Compatibility with Moose

Sugary APIs

The sugary APIs are highly compatible with Moose. Methods which have the same name as Moose's are expected to be compatible with Moose's.

Meta object protocols

Meta object protocols are a subset of the counterpart of Moose. Their methods which have the same name as Moose's are expected to be compatible with Moose's. Feel free to use these methods even if they are not documented.

However, there are differences between Moose's MOP and Mouse's. For example, meta object protocols in Mouse have no attributes by default, so $metaclass->meta->make_immutable() will not work as you expect. Don not make metaclasses immutable.

Mouse::Meta::Instance

Meta instance mechanism is not implemented, so you cannot change the reftype of Mouse objects in the same way as Moose.

Role exclusion

Role exclusion, exclude(), is not implemented.

-metaclass in Mouse::Exporter

use Mouse -metaclass => ... are not implemented. Use use Mouse -traits => ... instead.

Mouse::Meta::Attribute::Native

Native traits are not supported directly, but MouseX::NativeTraits is available on CPAN. Once you have installed it, you can use it as the same way in Moose. That is, native traits are automatically loaded by Mouse.

See the MouseX::NativeTraits manpage for details.

Notes about Moose::Cookbook

Many recipes in the Moose::Cookbook manpage fit Mouse, including:

• the Moose::Cookbook::Basics::Recipe1 manpage - The (always classic) Point example

• the Moose::Cookbook::Basics::Recipe2 manpage - A simple BankAccount example

• the Moose::Cookbook::Basics::Recipe3 manpage - A lazy BinaryTree example

• the Moose::Cookbook::Basics::Recipe4 manpage - Subtypes, and modeling a simple Company class hierarchy

• the Moose::Cookbook::Basics::Recipe5 manpage - More subtypes, coercion in a Request class

• the Moose::Cookbook::Basics::Recipe6 manpage - The augment/inner example

• the Moose::Cookbook::Basics::Recipe7 manpage - Making Moose fast with immutable

• the Moose::Cookbook::Basics::Recipe8 manpage - Builder methods and lazy_build

• the Moose::Cookbook::Basics::Recipe9 manpage - Operator overloading, subtypes, and coercion

• the Moose::Cookbook::Basics::Recipe10 manpage - Using BUILDARGS and BUILD to hook into object construction

• the Moose::Cookbook::Roles::Recipe1 manpage - The Moose::Role example

• the Moose::Cookbook::Roles::Recipe2 manpage - Advanced Role Composition - method exclusion and aliasing

• the Moose::Cookbook::Roles::Recipe3 manpage - Applying a role to an object instance

• the Moose::Cookbook::Meta::Recipe2 manpage - A meta-attribute, attributes with labels

• the Moose::Cookbook::Meta::Recipe3 manpage - Labels implemented via attribute traits

• the Moose::Cookbook::Extending::Recipe3 manpage - Providing an alternate base object class

SEE ALSO

Mouse

Moose

the Moose::Manual manpage

the Moose::Cookbook manpage