Moose::Meta::Attribute::Native(User Contributed Perl DocumentaMoose::Meta::Attribute::Native(3pm)
NAME
Moose::Meta::Attribute::Native - Extend your attribute interfaces
SYNOPSIS
package MyClass;
use Moose;
has 'mapping' => (
traits => [ 'Hash' ],
is => 'rw',
isa => 'HashRef[Str]',
default => sub { {} },
handles => {
exists_in_mapping => 'exists',
ids_in_mapping => 'keys',
get_mapping => 'get',
set_mapping => 'set',
set_quantity => [ set => 'quantity' ],
},
);
# ...
my $obj = MyClass->new;
$obj->set_quantity(10); # quantity => 10
$obj->set_mapping('foo', 4); # foo => 4
$obj->set_mapping('bar', 5); # bar => 5
$obj->set_mapping('baz', 6); # baz => 6
# prints 5
print $obj->get_mapping('bar') if $obj->exists_in_mapping('bar');
# prints 'quantity, foo, bar, baz'
print join ', ', $obj->ids_in_mapping;
DESCRIPTION
While Moose attributes provide a way to name your accessors, readers, writers, clearers
and predicates, this set of traits provides commonly used attribute helper methods for
more specific types of data.
As seen in the "SYNOPSIS", you specify the data structure via the "trait" parameter.
Available traits are below; see "METHOD PROVIDERS".
This module used to exist as the MooseX::AttributeHelpers extension. It was very commonly
used, so we moved it into core Moose. Since this gave us a chance to change the interface,
you will have to change your code or continue using the MooseX::AttributeHelpers
extension. MooseX::AttributeHelpers should continue to work.
PARAMETERS
handles
This is like "handles" in "has" in Moose, but only HASH references are allowed. Keys are
method names that you want installed locally, and values are methods from the method
providers (below). Currying with delegated methods works normally for "handles".
METHOD PROVIDERS
Number
Common numerical operations.
has 'integer' => (
traits => ['Number'],
is => 'ro',
isa => 'Int',
default => 5,
handles => {
set => 'set',
add => 'add',
sub => 'sub',
mul => 'mul',
div => 'div',
mod => 'mod',
abs => 'abs',
}
);
String
Common methods for string operations.
has 'text' => (
traits => ['String'],
is => 'rw',
isa => 'Str',
default => q{},
handles => {
add_text => 'append',
replace_text => 'replace',
}
);
Counter
Methods for incrementing and decrementing a counter attribute.
has 'counter' => (
traits => ['Counter'],
is => 'ro',
isa => 'Num',
default => 0,
handles => {
inc_counter => 'inc',
dec_counter => 'dec',
reset_counter => 'reset',
}
);
Bool
Common methods for boolean values.
has 'is_lit' => (
traits => ['Bool'],
is => 'rw',
isa => 'Bool',
default => 0,
handles => {
illuminate => 'set',
darken => 'unset',
flip_switch => 'toggle',
is_dark => 'not',
}
);
Hash
Common methods for hash references.
has 'options' => (
traits => ['Hash'],
is => 'ro',
isa => 'HashRef[Str]',
default => sub { {} },
handles => {
set_option => 'set',
get_option => 'get',
has_option => 'exists',
}
);
Array
Common methods for array references.
has 'queue' => (
traits => ['Array'],
is => 'ro',
isa => 'ArrayRef[Str]',
default => sub { [] },
handles => {
add_item => 'push',
next_item => 'shift',
}
);
Code
Common methods for code references.
has 'callback' => (
traits => ['Code'],
is => 'ro',
isa => 'CodeRef',
default => sub { sub { 'called' } },
handles => {
call => 'execute',
}
);
BUGS
All complex software has bugs lurking in it, and this module is no exception. If you find
a bug please either email me, or add the bug to cpan-RT.
AUTHOR
Stevan Little <stevan AT iinteractive.com>
with contributions from:
Robert (rlb3) Boone
Paul (frodwith) Driver
Shawn (Sartak) Moore
Chris (perigrin) Prather
Robert (phaylon) Sedlacek
Tom (dec) Lanyon
Yuval Kogman
Jason May
Cory (gphat) Watson
Florian (rafl) Ragwitz
Evan Carroll
Jesse (doy) Luehrs
COPYRIGHT AND LICENSE
Copyright 2007-2009 by Infinity Interactive, Inc.
<http://www.iinteractive.com>
This library is free software; you can redistribute it and/or modify it under the same
terms as Perl itself.
perl v5.10.0 2009-11-18 Moose::Meta::Attribute::Native(3pm)
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