1Algorithm::Diff::XS(3)User Contributed Perl DocumentationAlgorithm::Diff::XS(3)
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NAME

6       Algorithm::Diff::XS - Algorithm::Diff with XS core loop
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SYNOPSIS

9           # Drop-in replacement to Algorithm::Diff, but "compact_diff"
10           # and C<LCSidx> will run much faster for large data sets.
11           use Algorithm::Diff::XS qw( compact_diff LCSidx );
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DESCRIPTION

14       This module is a simple re-packaging of Joe Schaefer's excellent but
15       not very well-known Algorithm::LCS with a drop-in interface that simply
16       re-uses the installed version of the Algorithm::Diff module.
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18       Note that only the "LCSidx" function is optimized in XS at the moment,
19       which means only "compact_diff" will get significantly faster for large
20       data sets, while "diff" and "sdiff" will run in identical speed as
21       "Algorithm::Diff".
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BENCHMARK

24                             Rate     Algorithm::Diff Algorithm::Diff::XS
25       Algorithm::Diff     14.7/s                  --                -98%
26       Algorithm::Diff::XS  806/s               5402%                  --
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28       The benchmarking script is as below:
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30           my @data = ([qw/a b d/ x 50], [qw/b a d c/ x 50]);
31           cmpthese( 500, {
32               'Algorithm::Diff' => sub {
33                   Algorithm::Diff::compact_diff(@data)
34               },
35               'Algorithm::Diff::XS' => sub {
36                   Algorithm::Diff::XS::compact_diff(@data)
37               },
38           });
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SEE ALSO

41       Algorithm::Diff, Algorithm::LCS.
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AUTHORS

44       Audrey Tang <cpan@audreyt.org>
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47       Copyright 2008 by Audrey Tang <cpan@audreyt.org>.
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49       Contains derived code copyrighted 2003 by Joe Schaefer,
50       <joe+cpan@sunstarsys.com>.
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52       This library is free software; you can redistribute it and/or modify it
53       under the same terms as Perl itself.
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57perl v5.30.0                      2019-07-26            Algorithm::Diff::XS(3)
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