Kent Fredric > MooseX-Has-Sugar > MooseX::Has::Sugar

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Module Version: 1.000004   Source  

NAME ^

MooseX::Has::Sugar - Sugar Syntax for moose 'has' fields

VERSION ^

version 1.000004

SYNOPSIS ^

Moose has syntax is generally fine, but sometimes one gets bothered with the constant typing of string quotes for things. The MooseX::Types module exists and in many ways reduces the need for constant string creation.

Primary Benefits at a Glance

Reduced Typing in has declarations.

The constant need to type => and '' is fine for one-off cases, but the instant you have more than about 4 attributes it starts to get annoying.

More compact declarations.

Reduces much of the redundant typing in most cases, which makes your life easier, and makes it take up less visual space, which makes it faster to read.

No String Worries

Strings are often problematic, due to white-space etc. Noted that if you do happen to mess them up, Moose should at least warn you that you've done something daft. Using this alleviates that worry.

Before this Module.

Classical Moose

    has foo => (
            isa => 'Str',
            is  => 'ro',
            required => 1,
    );

    has bar => (
            isa => 'Str',
            is => 'rw'
            lazy_build => 1,
    );

Lazy Evil way to do it:

PLEASE DO NOT DO THIS

    has qw( foo isa Str is ro required 1 );
    has qw( bar isa Str is rw lazy_build 1 );

With this module

( and with MooseX::Types )

    use MooseX::Types::Moose qw( Str );
    use MooseX::Has::Sugar;

    has foo => (
            isa => Str,
            ro,
            required,
    );
    has bar => (
            isa => Str,
            rw,
            lazy_build,
    );

Or even

    use MooseX::Types::Moose qw( Str );
    use MooseX::Has::Sugar;

    has foo => ( isa => Str, ro,  required, );
    has bar => ( isa => Str, rw,  lazy_build, );

Alternative Forms

Basic is Expansion Only

( using ::Sugar::Minimal instead )

    use MooseX::Types::Moose qw( Str );
    use MooseX::Has::Sugar::Minimal;

    has foo => (
            isa => Str,
            is  => ro,
            required => 1,
    );
    has bar => (
            isa => Str,
            is => rw,
            lazy_build => 1,
    );

Attribute Expansions with Basic Expansions

( Combining parts of this and ::Sugar::Minimal )

    use MooseX::Types::Moose qw( Str );
    use MooseX::Has::Sugar::Minimal;
    use MooseX::Has::Sugar qw( :attrs );

    has foo => (
            isa => Str,
            is  => ro,
            required,
    );
    has bar => (
            isa => Str,
            is => rw,
            lazy_build,
    );

EXPORT GROUPS ^

:default

Since 0.0300, this exports all our syntax, the same as :attrs :isattrs. Primarily because I found you generally want all the sugar, not just part of it. This also gets rid of that nasty exclusion logic.

:isattrs

This exports ro, rw and bare as lists, so they behave as stand-alone attributes like "lazy" does.

    has foo => (
            required,
            isa => 'Str',
            ro,
    );

NOTE: This option is incompatible with ::Sugar::Minimal : "CONFLICTS"

:attrs

This exports "lazy" , "lazy_build" and "required", "coerce", "weak_ref" and "auto_deref" as subs that assume positive.

    has foo => (
            required,
            isa => 'Str',
    );

NOTE: This option is incompatible with MooseX::Types and Moose's Type Constraints Module : "CONFLICTS"

:is

DEPRECATED. See ::Sugar::Minimal for the same functionality

:allattrs

DEPRECATED, just use ":default" or do

    use MooseX::Has::Sugar;

EXPORTED FUNCTIONS ^

bare

returns ('is','bare')

ro

returns ('is','ro')

rw

returns ('is','rw')

required

returns ('required',1)

lazy

returns ('lazy',1)

lazy_build

returns ('lazy_build',1)

weak_ref

returns ('weak_ref',1)

coerce

returns ('coerce',1)

WARNING: Conflict with MooseX::Types and Moose::Util::TypeConstraints, see "CONFLICTS".

auto_deref

returns ('auto_deref',1)

CONFLICTS ^

MooseX::Has::Sugar::Minimal

MooseX::Has::Sugar::Saccharin

This module is not intended to be used in conjunction with ::Sugar::Minimal or ::Sugar::Saccharin

We export many of the same symbols and its just not very sensible.

MooseX::Types

Moose::Util::TypeConstraints

due to exporting the "coerce" symbol, using us in the same scope as a call to

    use MooseX::Types ....

or use Moose::Util::TypeConstraints

will result in a symbol collision.

We recommend using and creating proper type libraries instead, ( which will absolve you entirely of the need to use MooseX::Types and MooseX::Has::Sugar(::*)? in the same scope )

AUTHOR ^

Kent Fredric <kentnl at cpan.org>

COPYRIGHT AND LICENSE ^

This software is copyright (c) 2014 by Kent Fredric.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

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