moo::role5.18(3) [mojave man page]

Moo::Role(3)						User Contributed Perl Documentation					      Moo::Role(3)

NAME

       Moo::Role - Minimal Object Orientation support for Roles

SYNOPSIS

	package My::Role;

	use Moo::Role;

	sub foo { ... }

	sub bar { ... }

	has baz => (
	  is => 'ro',
	);

	1;

       And elsewhere:

	package Some::Class;

	use Moo;

	# bar gets imported, but not foo
	with('My::Role');

	sub foo { ... }

	1;

DESCRIPTION

       "Moo::Role" builds upon Role::Tiny, so look there for most of the documentation on how this works.  The main addition here is extra bits to
       make the roles more "Moosey;" which is to say, it adds "has".

IMPORTED SUBROUTINES

       See "IMPORTED SUBROUTINES" in Role::Tiny for all the other subroutines that are imported by this module.

   has
	has attr => (
	  is => 'ro',
	);

       Declares an attribute for the class to be composed into.  See "has" in Moo for all options.

CLEANING UP IMPORTS

       Moo::Role cleans up its own imported methods and any imports declared before the "use Moo::Role" statement automatically.  Anything
       imported after "use Moo::Role" will be composed into consuming packages.  A package that consumes this role:

	package My::Role::ID;

	use Digest::MD5 qw(md5_hex);
	use Moo::Role;
	use Digest::SHA qw(sha1_hex);

	requires 'name';

	sub as_md5  { my ($self) = @_; return md5_hex($self->name);  }
	sub as_sha1 { my ($self) = @_; return sha1_hex($self->name); }

	1;

       ..will now have a "$self->sha1_hex()" method available to it that probably does not do what you expect.	On the other hand, a call to
       "$self->md5_hex()" will die with the helpful error message: "Can't locate object method "md5_hex"".

       See "CLEANING UP IMPORTS" in Moo for more details.

SUPPORT

       See Moo for support and contact information.

AUTHORS

       See Moo for authors.

COPYRIGHT AND LICENSE

       See Moo for the copyright and license.

perl v5.18.2							    2013-12-31							      Moo::Role(3)

Mouse::Role(3pm)					User Contributed Perl Documentation					  Mouse::Role(3pm)

NAME

       Mouse::Role - The Mouse Role

VERSION

       This document describes Mouse version 0.99

SYNOPSIS

	   package Comparable;
	   use Mouse::Role; # the package is now a Mouse role

	   # Declare methods that are required by this role
	   requires qw(compare);

	   # Define methods this role provides
	   sub equals {
	       my($self, $other) = @_;
	       return $self->compare($other) == 0;
	   }

	   # and later
	   package MyObject;
	   use Mouse;
	   with qw(Comparable); # Now MyObject can equals()

	   sub compare {
	       # ...
	   }

	   my $foo = MyObject->new();
	   my $bar = MyObject->new();
	   $obj->equals($bar); # yes, it is comparable

DESCRIPTION

       This module declares the caller class to be a Mouse role.

       The concept of roles is documented in Moose::Manual::Roles.  This document serves as API documentation.

EXPORTED FUNCTIONS

       Mouse::Role supports all of the functions that Mouse exports, but differs slightly in how some items are handled (see "CAVEATS" below for
       details).

       Mouse::Role also offers two role-specific keywords:

   "requires(@method_names)"
       Roles can require that certain methods are implemented by any class which "does" the role.

       Note that attribute accessors also count as methods for the purposes of satisfying the requirements of a role.

   "excludes(@role_names)"
       This is exported but not implemented in Mouse.

IMPORT AND UNIMPORT

   import
       Importing Mouse::Role will give you sugar. "-traits" are also supported.

   unimport
       Please unimport ("no Mouse::Role") so that if someone calls one of the keywords (such as "has") it will break loudly instead breaking
       subtly.

CAVEATS

       Role support has only a few caveats:

       o   Roles cannot use the "extends" keyword; it will throw an exception for now.	The same is true of the "augment" and "inner" keywords
	   (not sure those really make sense for roles). All other Mouse keywords will be deferred so that they can be applied to the consuming
	   class.

       o   Role composition does its best to not be order-sensitive when it comes to conflict resolution and requirements detection. However, it
	   is order-sensitive when it comes to method modifiers. All before/around/after modifiers are included whenever a role is composed into a
	   class, and then applied in the order in which the roles are used. This also means that there is no conflict for before/around/after
	   modifiers.

	   In most cases, this will be a non-issue; however, it is something to keep in mind when using method modifiers in a role. You should
	   never assume any ordering.

SEE ALSO

       Mouse

       Moose::Role

       Moose::Manual::Roles

       Moose::Spec::Role

perl v5.14.2							    2012-06-30							  Mouse::Role(3pm)