#NAME

Moo::Role - Minimal Object Orientation support for Roles

#SYNOPSIS

package My::Role;

use Moo::Role;
use strictures 2;

sub foo { ... }

sub bar { ... }

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

1;

And elsewhere:

package Some::Class;

use Moo;
use strictures 2;

# 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 (in particular, using Moo::Role also enables strict and warnings). 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.

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