NAME

Hash::Case::Preserve - hash with enforced lower cased keys

INHERITANCE

 Hash::Case::Preserve
   is a Hash::Case
   is a Tie::StdHash

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

DESCRIPTION

Hash::Case::Preserve extends Hash::Case, which lets you play various trics with hash keys. See Hash::Case for the other implementations.

METHODS

$obj->addHashData(HASH)

See "METHODS" in Hash::Case

$obj->addPairs(PAIRS)

See "METHODS" in Hash::Case

$obj->setHash(HASH)

See "METHODS" in Hash::Case

tie(HASH, 'Hash::Case::Preserve', [VALUES,] OPTIONS)

Define HASH to be case insensitive, but case preserving. The hash is initialized with the VALUES, specified as ref-array or ref-hash.

OPTIONS is a list of key/value pairs, which specify how the hash must handle preservation. Current options:

 Option--Default
 keep    <required>

. keep => => 'FIRST' | 'LAST'

Which casing is the prefered 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.

SEE ALSO

This module is part of Hash-Case distribution version 1.006, built on June 19, 2008. Website: http://perl.overmeer.net/hash-case/

LICENSE

Copyrights 2002-2003,2007-2008 by Mark Overmeer. For other contributors see ChangeLog.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://www.perl.com/perl/misc/Artistic.html