NAME

Text::Levenshtein::Damerau::PP - Pure Perl Damerau Levenshtein edit distance.

SYNOPSIS

        use Text::Levenshtein::Damerau::PP qw/pp_edistance/;

        print pp_edistance('Neil','Niel');
        # prints 1

DESCRIPTION

Returns the true Damerau Levenshtein edit distance of strings with adjacent transpositions. Pure Perl implementation. Works correctly with utf8.

        use Text::Levenshtein::Damerau::PP qw/pp_edistance/;
        use utf8;

        pp_edistance('ⓕⓞⓤⓡ','ⓕⓤⓞⓡ'), 
        # prints 1

METHODS

pp_edistance

Arguments: source string and target string.

• OPTIONAL 3rd argument int (max distance; only return results with $int distance or less). 0 = unlimited. Default = 0.

Returns: int that represents the edit distance between the two argument. Stops calculations and returns -1 if max distance is set and reached.

Function to take the edit distance between a source and target string. Contains the actual algorithm implementation.

        use Text::Levenshtein::Damerau::PP qw/pp_edistance/;
        print pp_edistance('Neil','Niel');
        # prints 1

        print pp_edistance('Neil','Nielx',1);
        # prints -1

SEE ALSO

• Text::Levenshtein::Damerau

• Text::Levenshtein::Damerau::XS

BUGS

Please report bugs to:

https://rt.cpan.org/Public/Dist/Display.html?Name=Text-Levenshtein-Damerau

AUTHOR

Nick Logan <ug@skunkds.com>

LICENSE AND COPYRIGHT

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