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Mark Overmeer
and 1 contributors

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. 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.

METHODS

Constructors

$obj->addHashData(HASH)

See "Constructors" in Hash::Case

$obj->addPairs(PAIRS)

See "Constructors" in Hash::Case

$obj->setHash(HASH)

See "Constructors" 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 (passing a list of key-value pairs) or ref-hash.

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

 -Option--Default
  keep    'LAST'
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.

SEE ALSO

This module is part of Hash-Case distribution version 1.02, built on March 09, 2012. Website: http://perl.overmeer.net/hash-case/

LICENSE

Copyrights 2002-2003,2007-2012 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