NAME

Text::Levenshtein::XS - Calculate edit distance based on insertion, deletion, substitution, and transposition

VERSION

version 0.421

SYNOPSIS

use Text::Levenshtein::XS qw/distance/;

print distance('Neil','Niel');
# prints 2

DESCRIPTION

Returns the number of edits (insert,delete,substitute) required to turn the source string into the target string. XS implementation (requires a C compiler). Works correctly with utf8.

use Text::Levenshtein::XS qw/distance/;
use utf8;

distance('ⓕⓞⓤⓡ','ⓕⓤⓞⓡ'), 
# prints 2

METHODS

distance

Arguments: $source_text, $target_text, (optional) $max_distance

Return Value: Int $edit_distance || undef (if max_distance is exceeded)

Returns: int that represents the edit distance between the two argument, or undef if $max_distance threshold is exceeded.

Takes the edit distance between a source and target string using XS 2 vector implementation.

use Text::Levenshtein::XS qw/distance/;
print distance('Neil','Niel');
# prints 2

Stops calculations and returns undef if $max_distance is set, non-zero (0 = no limit), and the algorithm has determined the final distance will be greater than $max_distance.

my $distance = distance('Neil','Niel',1);
print (defined $distance) ? $distance : "Exceeded max distance";
# prints "Exceeded max distance"

NOTES

Drop in replacement for Text::LevenshteinXS

SEE ALSO

• Text::Levenshtein::Damerau

• Text::Levenshtein::Damerau::PP

• Text::Levenshtein::Damerau::XS

• Text::Fuzzy

• Text::Levenshtein::Flexible

REPOSITORY

https://github.com/ugexe/Text--Levenshtein--XS

BUGS

Please report bugs to:

https://github.com/ugexe/Text--Levenshtein--XS/issues

AUTHOR

ugexe <ugexe@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2014 by Nick Logan.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

cpanm Text::Levenshtein::XS

perl -MCPAN -e shell
install Text::Levenshtein::XS