HashHistory.pm (current version: 0.03; last updated 1999-05-27)

HashHistory is a tied hash module that you interpose between your program and another tied hash module, usually a DBM interface. Everything looks completely ordinary, but you can also ask HashHistory for the history of a key. It will return a list of all the values that the key has ever had, in order.


Return to: Universe of Discourse main page | What's new page | Perl Paraphernalia

mjd-perl-hashhistory@plover.com