trusty (3) Text::Levenshtein.3pm.gz

NAME

       Text::Levenshtein - An implementation of the Levenshtein edit distance

SYNOPSIS

        use Text::Levenshtein qw(distance);

        print distance("foo","four");
        # prints "2"

        print fastdistance("foo","four");
        # prints "2" faster

        my @words=("four","foo","bar");
        my @distances=distance("foo",@words);

        print "@distances";
        # prints "2 0 3"

DESCRIPTION

       This module implements the Levenshtein edit distance.  The Levenshtein edit distance is a measure of the
       degree of proximity between two strings.  This distance is the number of substitutions, deletions or
       insertions ("edits") needed to transform one string into the other one (and vice versa).  When two
       strings have distance 0, they are the same.  A good point to start is:
       <http://www.merriampark.com/ld.htm>

       "fastdistance" can be called with two scalars and is faster in most cases.

       See also Text::LevenshteinXS on CPAN if you do not require a perl-only implementation.  It is extremely
       faster in nearly all cases.

       See also Text::WagnerFischer on CPAN for a configurable edit distance, i.e. for configurable costs
       (weights) for the edits.

AUTHOR

       Copyright 2002 Dree Mistrut <dree@friul.it>

       This package is free software and is provided "as is" without express or implied warranty.  You can
       redistribute it and/or modify it under the same terms as Perl itself.