man Hash::Diff (3): 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 <[email protected]>

COPYRIGHT