Tie::IxHash::FixedSize - Tie::IxHash with a fixed maximum size
use Tie::IxHash::FixedSize; tie my %h, 'Tie::IxHash::FixedSize', {size => 3}, one => 1, two => 2, three => 3; print join ' ', keys %h; # prints 'one two three' $h{four} = 4; # key 'one' is removed, 'four' is added print join ' ', keys %h; # prints 'two three four'
Hashes tied to Tie::IxHash::FixedSize will only hold a fixed maximum number of keys before automatically removing old keys.
Hashes tied with Tie::IxHash::FixedSize behave exactly like normal Tie::IxHash hashes, except the maximum number of keys that can be held by the hash is limited by a specified size. Once the number of keys in the hash exceeds this size, the oldest keys in the hash will automatically be removed.
size
The size parameter to tie() specifies the maximum number of keys that the hash can hold. When the hash exceeds this number of keys, the first entries in the hash will automatically be removed until the number of keys in the hash does not exceed the size parameter. If no size parameter is given, then the hash will behave exactly like a plan Tie::IxHash, and the number of keys will not be limited.
tie()
You can contribute or fork this project via github:
http://github.com/mschout/tie-ixhash-fixedsize
git clone git://github.com/mschout/tie-ixhash-fixedsize.git
Please report any bugs or feature requests to bug-tie-ixhash-fixedsize@rt.cpan.org, or through the web interface at http://rt.cpan.org/.
Michael Schout <mschout@cpan.org>
Copyright (C) 2008 by Michael Schout
This program is free software; you can redistribute it and/or modify it under the terms of either:
the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version, or
the Artistic License version 2.0.
Tie::IxHash
To install Tie::IxHash::FixedSize, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Tie::IxHash::FixedSize
CPAN shell
perl -MCPAN -e shell install Tie::IxHash::FixedSize
For more information on module installation, please visit the detailed CPAN module installation guide.