1Error::TypeTiny::AssertUisoenr(3C)ontributed Perl DocumeEnrtraotri:o:nTypeTiny::Assertion(3)
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NAME

6       Error::TypeTiny::Assertion - exception when a value fails a type
7       constraint
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STATUS

10       This module is covered by the Type-Tiny stability policy.
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DESCRIPTION

13       This exception is thrown when a value fails a type constraint
14       assertion.
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16       This package inherits from Error::TypeTiny; see that for most
17       documentation. Major differences are listed below:
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19   Attributes
20       "type"
21           The type constraint that was checked against. Weakened links are
22           involved, so this may end up being "undef".
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24       "value"
25           The value that was tested.
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27       "varname"
28           The name of the variable that was checked, if known. Defaults to
29           '$_'.
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31       "attribute_name"
32           If this exception was thrown as the result of an isa check or a
33           failed coercion for a Moo attribute, then this will tell you which
34           attribute (if your Moo is new enough).
35
36           (Hopefully one day this will support other OO frameworks.)
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38       "attribute_step"
39           If this exception was thrown as the result of an isa check or a
40           failed coercion for a Moo attribute, then this will contain either
41           "isa check" or "coercion" to indicate which went wrong (if your Moo
42           is new enough).
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44           (Hopefully one day this will support other OO frameworks.)
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46   Methods
47       "has_type", "has_attribute_name", "has_attribute_step"
48           Predicate methods.
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50       "message"
51           Overridden to add "varname" to the message if defined.
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53       "explain"
54           Attempts to explain why the value did not pass the type constraint.
55           Returns an arrayref of strings providing step-by-step reasoning; or
56           returns undef if no explanation is possible.
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BUGS

59       Please report any bugs to
60       <http://rt.cpan.org/Dist/Display.html?Queue=Type-Tiny>.
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SEE ALSO

63       Error::TypeTiny.
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AUTHOR

66       Toby Inkster <tobyink@cpan.org>.
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69       This software is copyright (c) 2013-2014, 2017-2019 by Toby Inkster.
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71       This is free software; you can redistribute it and/or modify it under
72       the same terms as the Perl 5 programming language system itself.
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DISCLAIMER OF WARRANTIES

75       THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
76       WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
77       MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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81perl v5.30.0                      2019-07-26     Error::TypeTiny::Assertion(3)
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