/ 
Hash-Merge-Simple-0.02
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/ Hash::Merge::Simple

NAME

Hash::Merge::Simple - Recursively merge two or more hashes, simply

VERSION

Version 0.02

SYNOPSIS

use Hash::Merge::Simple qw/merge/;

my $a = { a => 1 };
my $b = { a => 100, b => 2};

# Merge with righthand hash taking precedence
my $c = merge $a, $b;
# $c is { a => 100, b => 2 } ... Note: a => 100 has overridden => 1

# Also, merge will take care to recursively merge any subordinate hashes found
my $a = { a => 1, c => 3, d => { i => 2 }, r => {} };
my $b = { b => 2, a => 100, d => { l => 4 } };
my $c = merge $a, $b;
# $c is { a => 100, b => 2, c => 3, d => { i => 2, l => 4 }, r => {} }

# You can also merge more than two hashes at the same time 
# The precedence increases from left to right (the rightmost has the most precedence)
my $everything = merge $this, $that, $mine, $yours, $kitchen_sink, ...;

DESCRIPTION

Hash::Merge::Simple will recursively merge two or more hashes and return the result as a new hash reference. The merge function will descend and merge hashes that exist under the same node in both the left and right hash, but doesn't attempt to combine arrays, objects, scalars, or anything else. The rightmost hash also takes precedence, replacing whatever was in the left hash if a conflict occurs.

This code was pretty much taken straight from Catalyst::Utils, and modified to handle more than 2 hashes at the same time.

EXPORTS

merge

See below.

METHODS

Hash::Merge::Simple->merge( <hash1>, <hash2>, <hash3>, ..., <hashN> )

Hash::Merge::Simple::merge( <hash1>, <hash2>, <hash3>, ..., <hashN> )

Merge <hash1> through <hashN>, with the nth-most (rightmost) hash taking precedence.

Returns a new hash reference representing the merge.

NOTE: The code does not currently check for cycles, so infinite loops are possible:

my $a = {};
$a->{b} = $a;
merge $a, $a;

AUTHOR

Robert Krimen, <rkrimen at cpan.org>

SEE ALSO

Catalyst::Utils

BUGS

Please report any bugs or feature requests to bug-hash-merge-simple at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Hash-Merge-Simple. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command.

perldoc Hash::Merge::Simple

You can also look for information at:

ACKNOWLEDGEMENTS

This code was pretty much taken directly from Catalyst::Utils

COPYRIGHT & LICENSE

Copyright 2008 Robert Krimen, all rights reserved.

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