view release on metacpan or  search on metacpan

README  view on Meta::CPAN

        one, two, or three arguments.

        If one argument, then only the element at the given position from
        the first sequence is not in either of the other two sequences.

        If two arguments, then there is no element in the first sequence
        that corresponds to the elements at the given positions in the
        second and third sequences.

        If three arguments, then the element at the given position in the
        first sequence is different than the corresponding element in the
        other two sequences, but the other two sequences have corresponding
        elements.

    B_DIFF
        This is called if the second sequence is different than the other
        two sequences at the current position. This callback will be called
        with one, two, or three arguments.

        If one argument, then only the element at the given position from
        the second sequence is not in either of the other two sequences.

        If two arguments, then there is no element in the second sequence
        that corresponds to the elements at the given positions in the first
        and third sequences.

        If three arguments, then the element at the given position in the
        second sequence is different than the corresponding element in the
        other two sequences, but the other two sequences have corresponding
        elements.

    C_DIFF
        This is called if the third sequence is different than the other two
        sequences at the current position. This callback will be called with
        one, two, or three arguments.

        If one argument, then only the element at the given position from
        the third sequence is not in either of the other two sequences.

        If two arguments, then there is no element in the third sequence
        that corresponds to the elements at the given positions in the first
        and second sequences.

        If three arguments, then the element at the given position in the
        third sequence is different than the corresponding element in the
        other two sequences, but the other two sequences have corresponding
        elements.

    CONFLICT
        This is called if all three sequences have different elements at the
        current position. The three arguments are the current positions
        within each sequence.

BUGS
    Most assuredly there are bugs. If a pattern similar to the above example
    does not work, send it to <jsmith@cpan.org> or report it on
    <http://rt.cpan.org/>, the CPAN bug tracker.

    Algorithm::Diff's implementation of "traverse_sequences" may not be
    symmetric with respect to the input sequences if the second and third
    sequence are of different lengths. Because of this,
    "traverse_sequences3" will calculate the diffs of the second and third
    sequences as passed and swapped. If the differences are not the same, it
    will issue an `Algorithm::Diff::diff is not symmetric for second and
    third sequences...' warning. It will try to handle this, but there may
    be some cases where it can't.

SEE ALSO
    Algorithm::Diff.

AUTHOR
    James G. Smith, <jsmith@cpan.org>

COPYRIGHT
    Copyright (C) 2003, 2007 Texas A&M University. All Rights Reserved.

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