MooseX::NewDefaults - Alter attribute defaults with less pain
This document describes version 0.005 of MooseX::NewDefaults - released April 24, 2015 as part of MooseX-NewDefaults.
package One;
use Moose;
use namespace::autoclean;
has A => (is => 'ro', default => sub { 'say ahhh' });
has B => (is => 'ro', default => sub { 'say whoo' });
package Two;
use Moose;
use namespace::autoclean;
use MooseX::NewDefaults;
extends 'One';
# sugar for defining a new default
default_for A => sub { 'say oooh' };
# this is also legal
default_for B => 'say oooh';
Ever start using a package from the CPAN, only to discover that it requires lots of subclassing and "has '+foo' => (default => ...)"? It's not recommended Moose best practice, and it's certainly not the prettiest thing ever, either.
That's where we come in.
This package introduces new sugar that you can use in your class, default_for (as seen above).
e.g.
has '+foo' => (default => sub { 'a b c' });
...is the same as:
default_for foo => sub { 'a b c' };
default_for() is a shortcut to extend an attribute to give it a new default; this default value may be any legal value for default options.
# attribute bar defined elsewhere (e.g. superclass)
default_for bar => 'new default';
... is the same as:
has '+bar' => (default => 'new default');
The development version is on github at http://https://github.com/RsrchBoy/moosex-newdefaults and may be cloned from git://https://github.com/RsrchBoy/moosex-newdefaults.git
Please report any bugs or feature requests on the bugtracker website https://github.com/RsrchBoy/moosex-newdefaults/issues
When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.
Chris Weyl cweyl@alumni.drew.edu
Please note I do not expect to be gittip'ed or flattr'ed for this work, rather it is simply a very pleasant surprise. I largely create and release works like this because I need them or I find it enjoyable; however, don't let that stop you if you feel like it ;)
Flattr this, gittip me, or indulge my Amazon Wishlist... If you so desire.
This software is Copyright (c) 2011 by Chris Weyl.
This is free software, licensed under:
The GNU Lesser General Public License, Version 2.1, February 1999