1 package Moose::Cookbook;
3 # ABSTRACT: How to cook a Moose
12 The Moose cookbook is a series of recipes showing various Moose
13 features. Most recipes present some code demonstrating some feature,
14 and then explain the details of the code.
16 You should probably read the L<Moose::Manual> first. The manual
17 explains Moose concepts without being too code-heavy.
23 These recipes will give you a good overview of Moose's capabilities, starting
24 with simple attribute declaration, and moving on to more powerful features like
25 laziness, types, type coercion, method modifiers, and more.
29 =item L<Moose::Cookbook::Basics::Recipe1> - The (always classic) B<Point> example
31 A simple Moose-based class. Demonstrates Moose attributes and subclassing.
33 =item L<Moose::Cookbook::Basics::Recipe2> - A simple B<BankAccount> example
35 A slightly more complex Moose class. Demonstrates using a method
36 modifier in a subclass.
38 =item L<Moose::Cookbook::Basics::Recipe3> - A lazy B<BinaryTree> example
40 Demonstrates several attribute features, including types, weak
41 references, predicates ("does this object have a foo?"), defaults,
42 laziness, and triggers.
44 =item L<Moose::Cookbook::Basics::Recipe4> - Subtypes, and modeling a simple B<Company> class hierarchy
46 Introduces the creation and use of custom types, a C<BUILD> method,
47 and the use of C<override> in a subclass.
49 =item L<Moose::Cookbook::Basics::Recipe5> - More subtypes, coercion in a B<Request> class
51 More type examples, including the use of type coercions.
53 =item L<Moose::Cookbook::Basics::Recipe6> - The augment/inner example
55 Demonstrates the use of C<augment> method modifiers, a way of turning
56 the usual method overriding style "inside-out".
58 =item L<Moose::Cookbook::Basics::Recipe7> - Making Moose fast with immutable
60 Making a class immutable greatly increases the speed of accessors and
63 =item L<Moose::Cookbook::Basics::Recipe8> - Builder methods and lazy_build
65 The builder feature provides an inheritable and role-composable way to
66 provide a default attribute value.
68 =item L<Moose::Cookbook::Basics::Recipe9> - Operator overloading, subtypes, and coercion
70 Demonstrates using operator overloading, coercion, and subtypes to
71 model how eye color is determined during reproduction.
73 =item L<Moose::Cookbook::Basics::Recipe10> - Using BUILDARGS and BUILD to hook into object construction
75 This recipe demonstrates the use of C<BUILDARGS> and C<BUILD> to hook
76 into object construction.
78 =item L<Moose::Cookbook::Basics::Recipe11> - Extending a non-Moose base class
80 In this recipe, we make a Moose-based subclass of L<DateTime>, a
81 module which does not use Moose itself.
87 These recipes will show you how to use Moose roles.
91 =item L<Moose::Cookbook::Roles::Recipe1> - The Moose::Role example
93 Demonstrates roles, which are also sometimes known as traits or
94 mix-ins. Roles provide a method of code re-use which is orthogonal to
97 =item L<Moose::Cookbook::Roles::Recipe2> - Advanced Role Composition - method exclusion and aliasing
99 Sometimes you just want to include part of a role in your
100 class. Sometimes you want the whole role but one of its methods
101 conflicts with one in your class. With method exclusion and aliasing,
102 you can work around these problems.
104 =item L<Moose::Cookbook::Roles::Recipe3> - Applying a role to an object instance
106 In this recipe, we apply a role to an existing object instance.
112 These recipes show you how to write your own meta classes, which lets
113 you extend the object system provided by Moose.
117 =item L<Moose::Cookbook::Meta::Recipe1> - Welcome to the meta-world (Why Go Meta?)
119 If you're wondering what all this "meta" stuff is, and why you should
120 care about it, read this "recipe".
122 =item L<Moose::Cookbook::Meta::Recipe2> - A meta-attribute, attributes with labels
124 One way to extend Moose is to provide your own attribute
125 metaclasses. Attribute metaclasses let you extend attribute
126 declarations (with C<has>) and behavior to provide additional
127 attribute functionality.
129 =item L<Moose::Cookbook::Meta::Recipe3> - Labels implemented via attribute traits
131 Extending Moose's attribute metaclass is a great way to add
132 functionality. However, attributes can only have one metaclass.
133 Applying roles to the attribute metaclass lets you provide
134 composable attribute functionality.
136 =item L<Moose::Cookbook::Meta::Recipe4> - Adding a "table" attribute to the metaclass
138 If you want to store more information about your classes, you'll have
139 to extend C<Moose::Meta::Class>. Doing so is simple, but you'll
140 probably also want to provide some sugar, so see
141 L<Moose::Cookbook::Extending::Recipe2> as well.
143 =item L<Moose::Cookbook::Meta::Recipe5> - The "table" attribute implemented as a metaclass trait
145 This recipe takes the class metaclass we saw in the previous recipe
146 and reimplements it as a metaclass trait.
148 =item L<Moose::Cookbook::Meta::Recipe6> - A method metaclass for marking methods public or private
150 This recipe shows a custom method metaclass that implements making a
153 =item L<Moose::Cookbook::Meta::Recipe7> - Using a blessed array reference as an object instance
155 This recipe shows an example of how you create your own meta-instance
156 class. The meta-instance determines the internal structure of object
157 instances and provide access to attribute slots.
159 =item Moose::Cookbook::Meta::Recipe8 - Hooking into immutabilization (TODO)
161 Moose has a feature known as "immutabilization". By calling C<<
162 __PACKAGE__->meta()->make_immutable() >> after defining your class
163 (attributes, roles, etc), you tell Moose to optimize things like
164 object creation, attribute access, and so on.
166 If you are creating your own metaclasses, you may need to hook into
167 the immutabilization system. This cuts across a number of spots,
168 including the metaclass class, meta method classes, and possibly the
169 meta-instance class as well.
171 This recipe shows you how to write extensions which immutabilize
176 =head2 Extending Moose
178 These recipes cover some more ways to extend Moose, and will be useful
179 if you plan to write your own C<MooseX> module.
183 =item L<Moose::Cookbook::Extending::Recipe1> - Moose extension overview
185 There are quite a few ways to extend Moose. This recipe provides an
186 overview of each method, and provides recommendations for when each is
189 =item L<Moose::Cookbook::Extending::Recipe2> - Providing a base object class role
191 Many base object class extensions can be implemented as roles. This
192 example shows how to provide a base object class debugging role that
193 is applied to any class that uses a notional C<MooseX::Debugging>
196 =item L<Moose::Cookbook::Extending::Recipe3> - Providing an alternate base object class
198 You may find that you want to provide an alternate base object class
199 along with a meta extension, or maybe you just want to add some
200 functionality to all your classes without typing C<extends
201 'MyApp::Base'> over and over.
203 =item L<Moose::Cookbook::Extending::Recipe4> - Acting like Moose.pm and providing sugar Moose-style
205 This recipe shows how to provide a replacement for C<Moose.pm>. You
206 may want to do this as part of the API for a C<MooseX> module,
207 especially if you want to default to a new metaclass class or base
216 =item L<Moose::Cookbook::Snack::Keywords>
218 =item L<Moose::Cookbook::Snack::Types>
226 =item L<http://www.gsph.com/index.php?Lang=En&ID=291>