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|
=encoding utf8
=head1 NAME
Hash::Case::Preserve - hash with enforced lower cased keys
=head1 INHERITANCE
Hash::Case::Preserve
is a Hash::Case
is a Tie::StdHash
=head1 SYNOPSIS
use Hash::Case::Preserve;
tie my(%cphash), 'Hash::Case::Preserve';
$cphash{StraNGeKeY} = 3;
print keys %cphash; # StraNGeKeY
print $cphash{strangekey}; # 3
print $cphash{STRANGEKEY}; # 3
=head1 DESCRIPTION
L<Hash::Case::Preserve|Hash::Case::Preserve> extends L<Hash::Case|Hash::Case>, which lets you play
various trics with hash keys. This extension implements a fake
hash which is case-insentive. The keys are administered in the
casing as they were used: case-insensitive but case-preserving.
Extends L<"DESCRIPTION" in Hash::Case|Hash::Case/"DESCRIPTION">.
=head1 METHODS
Extends L<"METHODS" in Hash::Case|Hash::Case/"METHODS">.
=head2 Constructors
Extends L<"Constructors" in Hash::Case|Hash::Case/"Constructors">.
=over 4
=item tie B<%hash>, 'Hash::Case::Preserve', [$values,] %options
Define C<%hash> to be case insensitive, but case preserving.
The hash is initialized with the C<$values>, specified as ARRAY (passing
flat key-value pairs) or HASH.
Improves base, see L<Hash::Case/"Constructors">
-Option--Default
keep 'LAST'
=over 2
=item keep => 'FIRST'|'LAST'
Which casing is the preferred casing? The FIRST appearance or the LAST.
Only stores will affect the casing, deletes will undo the definition.
Defaults to LAST, which is slightly faster.
=back
=back
=head2 Hidden object access
Extends L<"Hidden object access" in Hash::Case|Hash::Case/"Hidden object access">.
=over 4
=item $obj-E<gt>B<addHashData>(\%data)
Inherited, see L<Hash::Case/"Hidden object access">
=item $obj-E<gt>B<addPairs>(@pairs)
Inherited, see L<Hash::Case/"Hidden object access">
=item $obj-E<gt>B<setHash>(\%data)
Inherited, see L<Hash::Case/"Hidden object access">
=back
=head1 SEE ALSO
This module is part of Hash-Case version 1.07,
built on January 26, 2026. Website: F<http://perl.overmeer.net/CPAN/>
=head1 LICENSE
For contributors see file ChangeLog.
This software is copyright (c) 2002-2026 by Mark Overmeer.
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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