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The contents of the square brackets must be a valid regex specification
(i.e. something you could validly put in an m/.../ or a qr/.../).

The full error message should point to the bad regex syntax. If that
message doesn't help, see L<perlre> for details of the standard Perl
regex syntax.


=item C<<  Missing specification for constraint: %s  >>

You passed a constraint to C<validate>, but it was not a subroutine
reference. Every constraint must be specified as a reference to a
subroutine that expects one argument (the value) and returns a boolean
value indicating whether the value satisfied the constraint.


=item C<<  %s is not of type %s  >>

This is the default message returned by C<validate()> if the value
passed as its second argument doesn't match the type passed as its
first argument.


=item C<<  %s did not satisfy the constraint: %s  >>

This is the default message returned by C<validate()> if the value
passed as its second argument failed to satisfy one of the constraint
subroutines that were also passed to it.

=back


=head1 CONFIGURATION AND ENVIRONMENT

Dios::Types requires no configuration files or environment variables.


=head1 DEPENDENCIES

Requires Perl 5.14 or later.

Requires the Data::Dump module.

If typed attributes or parameters are used,
also requires the Variable::Magic module.


=for IF KEYWORDS {

Also requires the Keyword::Declare module (for the C<subtype> keyword).

=for IF KEYWORDS }


=head1 INCOMPATIBILITIES

None reported.


=head1 BUGS AND LIMITATIONS

No bugs have been reported.

Please report any bugs or feature requests to
C<bug-dios-types@rt.cpan.org>, or through the web interface at
L<http://rt.cpan.org>.


=head1 AUTHOR

Damian Conway  C<< <DCONWAY@cpan.org> >>


=head1 LICENCE AND COPYRIGHT

Copyright (c) 2015, Damian Conway C<< <DCONWAY@cpan.org> >>. All rights reserved.

This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See L<perlartistic>.


=head1 DISCLAIMER OF WARRANTY

BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH
YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
NECESSARY SERVICING, REPAIR, OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE
LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.