NAME¶

Sub::HandlesVia::Manual::WithCorinna - using Sub::HandlesVia with the "class" keyword

SYNOPSIS¶

 use v5.038;
 use experimental 'class';
 
 class Kitchen {
   field $foods :param = [];
   method foods () { return $foods }
   method _set_foods ($new) { $foods = $new }
   use Sub::HandlesVia::Declare [ 'foods', '_set_foods', sub { [] } ],
     Array => (
       all_foods => 'all',
       add_food  => 'push',
       eat_all   => 'reset',
     );
 }
 
 my $kitchen = Kitchen->new;
 $kitchen->add_food( 'apples' );
 $kitchen->add_food( 'carrots' );
 
 say "I have:";
 say "- $_" for $kitchen->all_foods;
 
 say "Now I will eat them all!";
 $kitchen->eat_all;

MANUAL¶

Sub::HandlesVia allows you to delegate methods from your class to the values of your objects' attributes.

Conceptually, it allows you to define "$object->push_number($n)" to be a shortcut for "$object->numbers->push($n)" except that "$object->numbers" is an arrayref, so doesn't have methods you can call on it like "push".

Sub::HandlesVia provides support for the Perl 5.38+ "class" keyword via Sub::HandlesVia::Declare.

As of the current version, you need to provide a "getter" and "setter" method to allow Sub::HandlesVia to access the attribute's value. It's also recommended to provide a coderef that Sub::HandlesVia can use to "reset" the value.

 use Sub::HandlesVia::Declare 'num', [ 'Number', 'Scalar' ] => (
   ...,
 );

BUGS¶

Please report any bugs to <https://github.com/tobyink/p5-sub-handlesvia/issues>.

SEE ALSO¶

Misc advanced documentation: Sub::HandlesVia::Manual::Advanced.

Sub::HandlesVia, Sub::HandlesVia::Declare.

Documentation for delegatable methods: Sub::HandlesVia::HandlerLibrary::Array, Sub::HandlesVia::HandlerLibrary::Blessed, Sub::HandlesVia::HandlerLibrary::Bool, Sub::HandlesVia::HandlerLibrary::Code, Sub::HandlesVia::HandlerLibrary::Counter, Sub::HandlesVia::HandlerLibrary::Enum, Sub::HandlesVia::HandlerLibrary::Hash, Sub::HandlesVia::HandlerLibrary::Number, Sub::HandlesVia::HandlerLibrary::Scalar, and Sub::HandlesVia::HandlerLibrary::String.

AUTHOR¶

Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE¶

This software is copyright (c) 2022 by Toby Inkster.

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

DISCLAIMER OF WARRANTIES¶

THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.