Tie::InsertOrderHash - insert-order-preserving tied hash

  tie my %hash => 'Tie::InsertOrderHash',
    one_two => 'buckle my shoe',
    3_4 => 'shut the door',
    V_VI => 'pick up sticks';
  %hash{7_of_9} => 'not bad';

  print "@{[keys %hash]}\n"; # prints keys in order inserted

Tie::InsertOrderHash is a tied hash which preserves the order of inserted keys. Regular perl hashes regurgitate keys in an unspecified order, but at times one wishes to have the properties of both a hash and an array.

As an extention, one may list key/value pairs as additional arguments to tie, as in the example above.

None.

B. K. Oxley (binkley) <binkley@bigfoot.com>

Tie::Hash

Tie::Hash provides a skeletal implementation for a tied hash.

perldata

perldata explains more about hashes and arrays.

perltie

perltie explains more about tying hashes, and describes the internal subs used to implement them.

tie in perlfunc

tie explains more about how user code tie hashes and the implicit use of this module.

The DBI module is Copyright (c) 2002 B. K. Oxley (binkley). All rights reserved.

You may distribute under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file.