Moose::Meta::TypeConstraint::DuckType

Section: User Contributed Perl Documentation (3pm)
Updated: 2023-01-30
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NAME

Moose::Meta::TypeConstraint::DuckType - Type constraint for duck typing  

VERSION

version 2.2203  

DESCRIPTION

This class represents type constraints based on an enumerated list of required methods.  

INHERITANCE

"Moose::Meta::TypeConstraint::DuckType" is a subclass of Moose::Meta::TypeConstraint.  

METHODS

 

Moose::Meta::TypeConstraint::DuckType->new(%options)

This creates a new duck type constraint based on the given %options.

It takes the same options as its parent, with several exceptions. First, it requires an additional option, "methods". This should be an array reference containing a list of required method names. Second, it automatically sets the parent to the "Object" type.

Finally, it ignores any provided "constraint" option. The constraint is generated automatically based on the provided "methods".  

$constraint->methods

Returns the array reference of required methods provided to the constructor.  

$constraint->create_child_type

This returns a new Moose::Meta::TypeConstraint object with the type as its parent.

Note that it does not return a "Moose::Meta::TypeConstraint::DuckType" object!  

BUGS

See ``BUGS'' in Moose for details on reporting bugs.  

AUTHORS

Stevan Little <stevan@cpan.org>
Dave Rolsky <autarch@urth.org>
Jesse Luehrs <doy@cpan.org>
Shawn M Moore <sartak@cpan.org>
יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>
Karen Etheridge <ether@cpan.org>
Florian Ragwitz <rafl@debian.org>
Hans Dieter Pearcey <hdp@cpan.org>
Chris Prather <chris@prather.org>
Matt S Trout <mstrout@cpan.org>
 

COPYRIGHT AND LICENSE

This software is copyright (c) 2006 by Infinity Interactive, Inc.

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


 

Index

NAME
VERSION
DESCRIPTION
INHERITANCE
METHODS
Moose::Meta::TypeConstraint::DuckType->new(%options)
$constraint->methods
$constraint->create_child_type
BUGS
AUTHORS
COPYRIGHT AND LICENSE

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Time: 02:35:37 GMT, March 29, 2024