NAME
Tie::Indexed::Hash - A tweaked version of the venerable Tie::IxHash.
VERSION
Version 0.02
SYNOPSIS
If you do not need the OO interface of Tie::IxHash
, then strongly consider
replacing Tie::IxHash
with this module because Tie::Indexed::Hash
runs
between 14% and 33% faster for "normal" operations (see the BENCHMARKS file for
the details, in particular the "Clear/Reassign" benchmarks).
use Tie::Indexed::Hash; my %indexed; tie %indexed, 'Tie::Indexed::Hash';
SUBROUTINES/METHODS
These are the standard TIEHASH
methods required by Perl. You may use them
directly if you really want to.
TIEHASH
Initializes this tied hash.
FETCH
Returns the value associated with the given key or undef
if the key does not
exist.
STORE
Save the given key/value pair in this tied hash.
DELETE
Removes a key from this tied hash and returns its value or undef if the key does not exist.
CLEAR
Sets this tied hash back to its initial starting conditions.
EXISTS
Returns true if the given key exists, false otherwise.
FIRSTKEY
Initialize the key counter and return the first key or undef if there are no keys in this tied hash.
NEXTKEY
Return all subsequent keys after the first key; returns undef at the end of the key list.
SCALAR
Returns a scalar representation of this tied hash.
DESTROY
Unused; we have no need to do any cleanup immediately before this tied hash is destroyed.
UNTIE
Unused; we have no need to do any cleanup immediately before this tied hash is unbound.
AUTHOR
Calvin Schwenzfeier, <calvin DOT schwenzfeier a~t gmail dotCOM>
BUGS
Please report any bugs or feature requests through GitHub's issue tracker web interface at http://github.com/cschwenz/Tie-Indexed-Hash/issues.
SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Tie::Indexed::Hash
You can also look for information at:
- The
Tie::Indexed::Hash
online docs (hosted on GitHub):http://cschwenz.github.com/Tie-Indexed-Hash/Tie/Indexed/Hash.html
- GitHub's issue tracker:
- The
Tie::Indexed::Hash
wiki (hosted on GitHub): - Source code (hosted on GitHub):
ACKNOWLEDGEMENTS
I would like to thank Richard Balint for the original idea and concept code.
LICENSE AND COPYRIGHT
Copyright 2010 Calvin Schwenzfeier.
This program is free software; you can redistribute it and/or modify it under the terms of either:
- a)
-
the GNU General Public License [http://dev.perl.org/licenses/gpl1.html] as published by the Free Software Foundation [http://www.fsf.org/]; either version 1 [http://dev.perl.org/licenses/gpl1.html], or (at your option) any later version [http://www.fsf.org/licensing/licenses/#GNUGPL], or
- b)
-
the "Artistic License" [http://dev.perl.org/licenses/artistic.html].
For those of you that choose to use the GNU General Public License, my interpretation of the GNU General Public License is that no Perl script falls under the terms of the GPL unless you explicitly put said script under the terms of the GPL yourself. Furthermore, any object code linked with perl does not automatically fall under the terms of the GPL, provided such object code only adds definitions of subroutines and variables, and does not otherwise impair the resulting interpreter from executing any standard Perl script. I consider linking in C subroutines in this manner to be the moral equivalent of defining subroutines in the Perl language itself. You may sell such an object file as proprietary provided that you provide or offer to provide the Perl source, as specified by the GNU General Public License. (This is merely an alternate way of specifying input to the program.) You may also sell a binary produced by the dumping of a running Perl script that belongs to you, provided that you provide or offer to provide the Perl source as specified by the GPL. (The fact that a Perl interpreter and your code are in the same binary file is, in this case, a form of mere aggregation.) This is my interpretation of the GPL. If you still have concerns or difficulties understanding my intent, feel free to contact me. Of course, the Artistic License spells all this out for your protection, so you may prefer to use that. -- Larry Wall
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