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Manual Reference Pages  -  MOUSEX::ATTRIBUTEHELPERS (3)

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NAME

MouseX::AttributeHelpers - Extend your attribute interfaces

CONTENTS

SYNOPSIS



    package MyClass;

    use Mouse;
    use MouseX::AttributeHelpers;

    has mapping => (
        metaclass => Collection::Hash,
        is        => rw,
        isa       => HashRef,
        default   => sub { +{} },
        provides  => {
            exists => exists_in_mapping,
            keys   => ids_in_mapping,
            get    => get_mapping,
            set    => set_mapping,
        },
    );

    package main;

    my $obj = MyClass->new;
    $obj->set_quantity(10);      # quantity => 10
    $obj->set_mapping(4, foo); # 4 => foo
    $obj->set_mapping(5, bar); # 5 => bar
    $obj->set_mapping(6, baz); # 6 => baz

    # prints bar
    print $obj->get_mapping(5) if $obj->exists_in_mapping(5);

    # prints 4, 5, 6
    print join , , $obj->ids_in_mapping;



DESCRIPTION

MouseX::AttributeHelpers provides commonly used attribute helper methods for more specific types of data.

As seen in the SYNOPSIS, you specify the extension via the metaclass parameter.

PARAMETERS

    provides

This points to a hashref that uses provider for the keys and method for the values. The method will be added to the object itself and do what you want.

    curries

This points to a hashref that uses provider for the keys and has two choices for the value:

You can supply { method => \@args } for the values. The method will be added to the object itself (always using @args as the beginning arguments).

Another approach to curry a method provider is to supply a coderef instead of an arrayref. The code ref takes $self, $body, and any additional arguments passed to the final method.

METHOD PROVIDERS

    Counter

Methods for incrementing and decrementing a counter attribute.

    Number

Common numerical operations.

    String

Common methods for string values.

    Bool

Common methods for boolean values.

    Collection::List

Common list methods for array references.

    Collection::Array

Common methods for array references.

    Collection::ImmutableHash

Common methods for hash references.

    Collection::Hash

Common additional methods for hash references.

    Collection::Bag

Methods for incrementing and decrementing a value of collection.

AUTHOR

NAKAGAWA Masaki <masaki@cpan.org>

THANKS TO

AUTHOR in MooseX::AttributeHelpers

LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

Mouse

MouseX::AttributeHelpers::Counter, MouseX::AttributeHelpers::Number, MouseX::AttributeHelpers::String, MouseX::AttributeHelpers::Bool, MouseX::AttributeHelpers::Collection::List, MouseX::AttributeHelpers::Collection::Array, MouseX::AttributeHelpers::Collection::ImmutableHash, MouseX::AttributeHelpers::Collection::Hash, MouseX::AttributeHelpers::Collection::Bag

MooseX::AttributeHelpers

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perl v5.20.3 MOUSEX::ATTRIBUTEHELPERS (3) 2012-05-03

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