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Hash::Diff(3pm) User Contributed Perl Documentation Hash::Diff(3pm)
 

NAME

Hash::Diff - Return difference between two hashes as a hash

SYNOPSIS

    use Hash::Diff qw( diff );
    my %a = ( 
                'foo'    => 1,
            'bar'    => { a => 1, b => 1 },
        );
    my %b = ( 
                'foo'     => 2, 
                'bar'    => { a => 1 },
        );
    my %c = %{ diff( \%a, \%b ) };
    
    # %c = %{ foo => 1, bar => { b => 1} }

DESCRIPTION

Hash::Diff returns the difference between two hashes as a hash.
diff ( <hashref>, <hashref> )
Diffs two hashes. Returns a reference to the new hash.
left_diff ( <hashref>, <hashref> )
Returns the values in the left hash that is not, or different from the right hash.

CAVEATS

This will not handle self-referencing/recursion within hashes well. This will only handle HASH and SCALAR.
Plans for a future version include incorporate deep recursion protection. And support for ARRAY.

BUGS

Sure! Report here: http://rt.cpan.org/NoAuth/Bugs.html?Dist=Hash::Diff

AUTHOR

Bjorn-Olav Strand <bo@startsiden.no>

COPYRIGHT

Copyright (c) 2010 ABC Startsiden AS. All rights reserved.
This library is free software. You can redistribute it and/or modify it under the same terms as Perl itself.
2014-07-11 perl v5.18.2