1Moose::Meta::TypeConstrUasienrt:C:oUnntiroinb(u3t)ed PerMlooDsoec:u:mMeenttaa:t:iToynpeConstraint::Union(3)
2
3
4

NAME

6       Moose::Meta::TypeConstraint::Union - A union of Moose type constraints
7

VERSION

9       version 2.2011
10

DESCRIPTION

12       This metaclass represents a union of type constraints. A union takes
13       multiple type constraints, and is true if any one of its member
14       constraints is true.
15

INHERITANCE

17       "Moose::Meta::TypeConstraint::Union" is a subclass of
18       Moose::Meta::TypeConstraint.
19

METHODS

21   Moose::Meta::TypeConstraint::Union->new(%options)
22       This creates a new class type constraint based on the given %options.
23
24       It takes the same options as its parent. It also requires an additional
25       option, "type_constraints". This is an array reference containing the
26       Moose::Meta::TypeConstraint objects that are the members of the union
27       type. The "name" option defaults to the names all of these member types
28       sorted and then joined by a pipe (|).
29
30       The constructor sets the implementation of the constraint so that is
31       simply calls "check" on the newly created object.
32
33       Finally, the constructor also makes sure that the object's "coercion"
34       attribute is a Moose::Meta::TypeCoercion::Union object.
35
36   $constraint->type_constraints
37       This returns the array reference of "type_constraints" provided to the
38       constructor.
39
40   $constraint->parent
41       This returns the nearest common ancestor of all the components of the
42       union.
43
44   $constraint->check($value)
45   $constraint->validate($value)
46       These two methods simply call the relevant method on each of the member
47       type constraints in the union. If any type accepts the value, the value
48       is valid.
49
50       With "validate" the error message returned includes all of the error
51       messages returned by the member type constraints.
52
53   $constraint->equals($type_name_or_object)
54       A type is considered equal if it is also a union type, and the two
55       unions have the same member types.
56
57   $constraint->find_type_for($value)
58       This returns the first member type constraint for which "check($value)"
59       is true, allowing you to determine which of the Union's member type
60       constraints a given value matches.
61
62   $constraint->is_a_type_of($type_name_or_object)
63       This returns true if all of the member type constraints return true for
64       the "is_a_type_of" method.
65
66   $constraint->is_subtype_of
67       This returns true if all of the member type constraints return true for
68       the "is_subtype_of" method.
69
70   $constraint->create_child_type(%options)
71       This returns a new Moose::Meta::TypeConstraint object with the type as
72       its parent.
73

BUGS

75       See "BUGS" in Moose for details on reporting bugs.
76

AUTHORS

78       ·   Stevan Little <stevan.little@iinteractive.com>
79
80       ·   Dave Rolsky <autarch@urth.org>
81
82       ·   Jesse Luehrs <doy@tozt.net>
83
84       ·   Shawn M Moore <code@sartak.org>
85
86       ·   יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>
87
88       ·   Karen Etheridge <ether@cpan.org>
89
90       ·   Florian Ragwitz <rafl@debian.org>
91
92       ·   Hans Dieter Pearcey <hdp@weftsoar.net>
93
94       ·   Chris Prather <chris@prather.org>
95
96       ·   Matt S Trout <mst@shadowcat.co.uk>
97
99       This software is copyright (c) 2006 by Infinity Interactive, Inc.
100
101       This is free software; you can redistribute it and/or modify it under
102       the same terms as the Perl 5 programming language system itself.
103
104
105
106perl v5.28.1                      2018-05-M1o6ose::Meta::TypeConstraint::Union(3)
Impressum