6 Moose::Cookbook - How to cook a Moose
10 The Moose cookbook is a series of recipes showing various Moose
11 features. Most recipes present some code demonstrating some feature,
12 and then explain the details of the code.
14 You should probably read the L<Moose::Manual> first. The manual
15 explains Moose concepts without being too code-heavy.
21 These recipes will give you a good overview of Moose's capabilities, starting
22 with simple attribute declaration, and moving on to more powerful features like
23 laziness, types, type coercion, method modifiers, and more.
27 =item L<Moose::Cookbook::Basics::Recipe1> - The (always classic) B<Point> example
29 A simple Moose-based class. Demonstrates Moose attributes and subclassing.
31 =item L<Moose::Cookbook::Basics::Recipe2> - A simple B<BankAccount> example
33 A slightly more complex Moose class. Demonstrates using a method
34 modifier in a subclass.
36 =item L<Moose::Cookbook::Basics::Recipe3> - A lazy B<BinaryTree> example
38 Demonstrates several attribute features, including types, weak
39 references, predicates ("does this object have a foo?"), defaults,
40 laziness, and triggers.
42 =item L<Moose::Cookbook::Basics::Recipe4> - Subtypes, and modeling a simple B<Company> class hierarchy
44 Introduces the creation and use of custom types, a C<BUILD> method,
45 and the use of C<override> in a subclass.
47 =item L<Moose::Cookbook::Basics::Recipe5> - More subtypes, coercion in a B<Request> class
49 More type examples, including the use of type coercions.
51 =item L<Moose::Cookbook::Basics::Recipe6> - The augment/inner example
53 Demonstrates the use of C<augment> method modifiers, a way of turning
54 the usual method overriding style "inside-out".
56 =item L<Moose::Cookbook::Basics::Recipe7> - Making Moose fast with immutable
58 Making a class immutable greatly increases the speed of accessors and
61 =item L<Moose::Cookbook::Basics::Recipe8> - Builder methods and lazy_build
63 The builder feature provides an inheritable and role-composable way to
64 provide a default attribute value.
66 =item L<Moose::Cookbook::Basics::Recipe9> - Operator overloading, subtypes, and coercion
68 Demonstrates using operator overloading, coercion, and subtypes to
69 model how eye color is determined during reproduction.
71 =item L<Moose::Cookbook::Basics::Recipe10> - Using BUILDARGS and BUILD to hook into object construction
73 This recipe demonstrates the use of C<BUILDARGS> and C<BUILD> to hook
74 into object construction.
76 =item L<Moose::Cookbook::Basics::Recipe11> - Extending a non-Moose base class
78 In this recipe, we make a Moose-based subclass of L<DateTime>, a
79 module which does not use Moose itself.
85 These recipes will show you how to use Moose roles.
89 =item L<Moose::Cookbook::Roles::Recipe1> - The Moose::Role example
91 Demonstrates roles, which are also sometimes known as traits or
92 mix-ins. Roles provide a method of code re-use which is orthogonal to
95 =item L<Moose::Cookbook::Roles::Recipe2> - Advanced Role Composition - method exclusion and aliasing
97 Sometimes you just want to include part of a role in your
98 class. Sometimes you want the whole role but one of its methods
99 conflicts with one in your class. With method exclusion and aliasing,
100 you can work around these problems.
102 =item L<Moose::Cookbook::Roles::Recipe3> - Applying a role to an object instance
104 In this recipe, we apply a role to an existing object instance.
110 These recipes show you how to write your own meta classes, which lets
111 you extend the object system provided by Moose.
115 =item L<Moose::Cookbook::Meta::Recipe1> - Welcome to the meta-world (Why Go Meta?)
117 If you're wondering what all this "meta" stuff is, and why you should
118 care about it, read this "recipe".
120 =item L<Moose::Cookbook::Meta::Recipe2> - A meta-attribute, attributes with labels
122 One way to extend Moose is to provide your own attribute
123 metaclasses. Attribute metaclasses let you extend attribute
124 declarations (with C<has>) and behavior to provide additional
125 attribute functionality.
127 =item L<Moose::Cookbook::Meta::Recipe3> - Labels implemented via attribute traits
129 Extending Moose's attribute metaclass is a great way to add
130 functionality. However, attributes can only have one metaclass.
131 Applying roles to the attribute metaclass lets you provide
132 composable attribute functionality.
134 =item L<Moose::Cookbook::Meta::Recipe4> - Adding a "table" attribute to the metaclass
136 If you want to store more information about your classes, you'll have
137 to extend C<Moose::Meta::Class>. Doing so is simple, but you'll
138 probably also want to provide some sugar, so see
139 L<Moose::Cookbook::Extending::Recipe2> as well.
141 =item L<Moose::Cookbook::Meta::Recipe5> - The "table" attribute implemented as a metaclass trait
143 This recipe takes the class metaclass we saw in the previous recipe
144 and reimplements it as a metaclass trait.
146 =item L<Moose::Cookbook::Meta::Recipe6> - A method metaclass for marking methods public or private
148 This recipe shows a custom method metaclass that implements making a
151 =item L<Moose::Cookbook::Meta::Recipe7> - Using a blessed array reference as an object instance
153 This recipe shows an example of how you create your own meta-instance
154 class. The meta-instance determines the internal structure of object
155 instances and provide access to attribute slots.
157 =item Moose::Cookbook::Meta::Recipe8 - Hooking into immutabilization (TODO)
159 Moose has a feature known as "immutabilization". By calling C<<
160 __PACKAGE__->meta()->make_immutable() >> after defining your class
161 (attributes, roles, etc), you tell Moose to optimize things like
162 object creation, attribute access, and so on.
164 If you are creating your own metaclasses, you may need to hook into
165 the immutabilization system. This cuts across a number of spots,
166 including the metaclass class, meta method classes, and possibly the
167 meta-instance class as well.
169 This recipe shows you how to write extensions which immutabilize
174 =head2 Extending Moose
176 These recipes cover some more ways to extend Moose, and will be useful
177 if you plan to write your own C<MooseX> module.
181 =item L<Moose::Cookbook::Extending::Recipe1> - Moose extension overview
183 There are quite a few ways to extend Moose. This recipe provides an
184 overview of each method, and provides recommendations for when each is
187 =item L<Moose::Cookbook::Extending::Recipe2> - Providing a base object class role
189 Many base object class extensions can be implemented as roles. This
190 example shows how to provide a base object class debugging role that
191 is applied to any class that uses a notional C<MooseX::Debugging>
194 =item L<Moose::Cookbook::Extending::Recipe3> - Providing an alternate base object class
196 You may find that you want to provide an alternate base object class
197 along with a meta extension, or maybe you just want to add some
198 functionality to all your classes without typing C<extends
199 'MyApp::Base'> over and over.
201 =item L<Moose::Cookbook::Extending::Recipe4> - Acting like Moose.pm and providing sugar Moose-style
203 This recipe shows how to provide a replacement for C<Moose.pm>. You
204 may want to do this as part of the API for a C<MooseX> module,
205 especially if you want to default to a new metaclass class or base
214 =item L<Moose::Cookbook::Snack::Keywords>
216 =item L<Moose::Cookbook::Snack::Types>
224 =item L<http://www.gsph.com/index.php?Lang=En&ID=291>
230 Stevan Little E<lt>stevan@iinteractive.comE<gt>
232 =head1 COPYRIGHT AND LICENSE
234 Copyright 2006-2010 by Infinity Interactive, Inc.
236 L<http://www.iinteractive.com>
238 This library is free software; you can redistribute it and/or modify
239 it under the same terms as Perl itself.