MooseX::CurriedDelegation - Curry your delegations with methods
This document describes version 0.003 of MooseX::CurriedDelegation - released November 09, 2016 as part of MooseX-CurriedDelegation.
use Moose; use MooseX::CurriedDelegation; has one => (is => 'ro', isa => 'Str', default => 'default'); has foo => ( is => 'rw', isa => 'TestClass::Delagatee', # has method curried() default => sub { TestClass::Delagatee->new }, handles => { # method-curry # Note the hashref, not arrayref, we employ # first arg is the remote method to delegate to # second is an arrayref comprising: # coderef to call as a method on the instance, followed by # "static" curry args # # so, essentially: # $self->foo->remote_method($self->$coderef(), @remaining_args); # # foo_del_one => { # remote_method => [ sub { ... }, qw{ static args } ], # }, foo_del_one => { curried => [ sub { shift->one }, qw{ more curry args } ] }, # curry_to_self() always returns: sub { shift } foo_del_two => { other_method => [ curry_to_self ] }, }, );
Method delegation is awfully handy -- but sometimes it'd be awfully handier if it was a touch more dynamic. This is an attribute trait that provides for a delegated method to be curried.
Using this package will cause the relevant attribute trait to be applied without requiring further intervention. We use the standard
handles => { local_method => delegate_info, ... }
delegation methodology, however our currying is invoked when delegate_info is a hashref. We expect delegate info to look like:
{ remote_method => [ $coderef, @more_curry_args ] }
Only $coderef is ever executed by the delegation. This means that it is safe to have any number of additional coderefs in @more_curry_args: they will be passed through to remote_method without additional manipulation.
In addition, we export a number of helper functions.
This function always returns a coderef like "sub { shift }". That is, this:
local => { remote => [ curry_to_self ] }
is equivalent to:
local => { remote => [ sub { shift } ] }
$self->attribute_accessor->remote($self)
Resolves out to the full name of our attribute trait; you can use it as:
has foo => (traits => [CurriedDelegation], ...)
Please see those modules/websites for more information related to this module.
Moose
Moose::Meta::Method::Delegation
Please report any bugs or feature requests on the bugtracker website https://github.com/RsrchBoy/moosex-currieddelegation/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, Gratipay, or indulge my Amazon Wishlist... If and *only* if you so desire.
This software is Copyright (c) 2012 by Chris Weyl.
This is free software, licensed under:
The GNU Lesser General Public License, Version 2.1, February 1999
To install MooseX::CurriedDelegation, copy and paste the appropriate command in to your terminal.
cpanm
cpanm MooseX::CurriedDelegation
CPAN shell
perl -MCPAN -e shell install MooseX::CurriedDelegation
For more information on module installation, please visit the detailed CPAN module installation guide.