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Man Pages


Manual Reference Pages  -  MOOSE::META::TYPECOERCION (3)

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NAME

Moose::Meta::TypeCoercion - The Moose Type Coercion metaclass

CONTENTS

VERSION

version 2.1605

DESCRIPTION

A type coercion object is basically a mapping of one or more type constraints and the associated coercions subroutines.

It’s unlikely that you will need to instantiate an object of this class directly, as it’s part of the deep internals of Moose.

METHODS

    Moose::Meta::TypeCoercion->new(%options)

Creates a new type coercion object, based on the options provided.
o type_constraint

This is the Moose::Meta::TypeConstraint object for the type that is being coerced to.

CW$coercion->type_coercion_map

This returns the map of type constraints to coercions as an array reference. The values of the array alternate between type names and subroutine references which implement the coercion.

The value is an array reference because coercions are tried in the order they are added.

CW$coercion->type_constraint

This returns the Moose::Meta::TypeConstraint that was passed to the constructor.

CW$coercion->has_coercion_for_type($type_name)

Returns true if the coercion can coerce the named type.

CW$coercion->add_type_coercions( CW$type_name => CW$sub, ... )

This method takes a list of type names and subroutine references. If the coercion already has a mapping for a given type, it throws an exception.

Coercions are actually

CW$coercion->coerce($value)

This method takes a value and applies the first valid coercion it finds.

This means that if the value could belong to more than type in the coercion object, the first coercion added is used.

    Moose::Meta::TypeCoercion->meta

This will return a Class::MOP::Class instance for this class.

BUGS

See BUGS in Moose for details on reporting bugs.

AUTHORS

o Stevan Little <stevan.little@iinteractive.com>
o Dave Rolsky <autarch@urth.org>
o Jesse Luehrs <doy@tozt.net>
o Shawn M Moore <code@sartak.org>
o XXXX XXXXX (Yuval Kogman) <nothingmuch@woobling.org>
o Karen Etheridge <ether@cpan.org>
o Florian Ragwitz <rafl@debian.org>
o Hans Dieter Pearcey <hdp@weftsoar.net>
o Chris Prather <chris@prather.org>
o Matt S Trout <mst@shadowcat.co.uk>

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.

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perl v5.20.3 MOOSE::META::TYPECOERCION (3) 2016-02-16

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