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and 142 contributors-
Stevan Little
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Dave Rolsky
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Jesse Luehrs
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Shawn M Moore
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יובל קוג'מן (Yuval Kogman)
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- NAME
- VERSION
- DESCRIPTION
- INHERITANCE
- METHODS
- Moose::Meta::TypeConstraint::Union->new(%options)
- $constraint->type_constraints
- $constraint->parent
- $constraint->check($value)
- $constraint->validate($value)
- $constraint->equals($type_name_or_object)
- $constraint->find_type_for($value)
- $constraint->is_a_type_of($type_name_or_object)
- $constraint->is_subtype_of
- $constraint->create_child_type(%options)
- BUGS
- AUTHORS
- COPYRIGHT AND LICENSE
NAME
Moose::Meta::TypeConstraint::Union - A union of Moose type constraints
VERSION
version 2.2201
DESCRIPTION
This metaclass represents a union of type constraints. A union takes multiple type constraints, and is true if any one of its member constraints is true.
INHERITANCE
Moose::Meta::TypeConstraint::Union
is a subclass of Moose::Meta::TypeConstraint.METHODS
Moose::Meta::TypeConstraint::Union->new(%options)
This creates a new class type constraint based on the given
%options
.It takes the same options as its parent. It also requires an additional option,
type_constraints
. This is an array reference containing the Moose::Meta::TypeConstraint objects that are the members of the union type. Thename
option defaults to the names all of these member types sorted and then joined by a pipe (|).The constructor sets the implementation of the constraint so that is simply calls
check
on the newly created object.Finally, the constructor also makes sure that the object's
coercion
attribute is a Moose::Meta::TypeCoercion::Union object.$constraint->type_constraints
This returns the array reference of
type_constraints
provided to the constructor.$constraint->parent
This returns the nearest common ancestor of all the components of the union.
$constraint->check($value)
$constraint->validate($value)
These two methods simply call the relevant method on each of the member type constraints in the union. If any type accepts the value, the value is valid.
With
validate
the error message returned includes all of the error messages returned by the member type constraints.$constraint->equals($type_name_or_object)
A type is considered equal if it is also a union type, and the two unions have the same member types.
$constraint->find_type_for($value)
This returns the first member type constraint for which
check($value)
is true, allowing you to determine which of the Union's member type constraints a given value matches.$constraint->is_a_type_of($type_name_or_object)
This returns true if all of the member type constraints return true for the
is_a_type_of
method.$constraint->is_subtype_of
This returns true if all of the member type constraints return true for the
is_subtype_of
method.$constraint->create_child_type(%options)
This returns a new Moose::Meta::TypeConstraint object with the type as its parent.
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.
Module Install Instructions
To install Moose, copy and paste the appropriate command in to your terminal.
cpanm Moose
perl -MCPAN -e shell install Moose
For more information on module installation, please visit the detailed CPAN module installation guide.