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

VERSION
    Version 0.04

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;

    NOTE: If you want to avoid giving/receiving side effects with the merged
    result, use "clone_merge" or "dclone_merge" An example of this problem
    (thanks Uri):

        my $left = { a => { b => 2 } } ;
        my $right = { c => 4 } ;

        my $result = merge( $left, $right ) ;

        $left->{a}{b} = 3 ;
        $left->{a}{d} = 5 ;

        # $result->{a}{b} == 3 !
        # $result->{a}{d} == 5 !

  Hash::Merge::Simple->clone_merge( <hash1>, <hash2>, <hash3>, ..., <hashN> )
  Hash::Merge::Simple::clone_merge( <hash1>, <hash2>, <hash3>, ..., <hashN> )
    Perform a merge, clone the merge, and return the result

    This is useful in cases where you need to ensure that the result can be
    tweaked without fear of giving/receiving any side effects

    This method will use Clone to do the cloning

  Hash::Merge::Simple->dclone_merge( <hash1>, <hash2>, <hash3>, ..., <hashN> )
  Hash::Merge::Simple::dclone_merge( <hash1>, <hash2>, <hash3>, ..., <hashN> )
    Perform a merge, clone the merge, and return the result

    This is useful in cases where you need to ensure that the result can be
    tweaked without fear of giving/receiving any side effects

    This method will use Storable (dclone) to do the cloning

AUTHOR
    Robert Krimen, "<rkrimen at cpan.org>"

SEE ALSO
    Hash::Merge, 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:

    *   RT: CPAN's request tracker

        <http://rt.cpan.org/NoAuth/Bugs.html?Dist=Hash-Merge-Simple>

    *   AnnoCPAN: Annotated CPAN documentation

        <http://annocpan.org/dist/Hash-Merge-Simple>

    *   CPAN Ratings

        <http://cpanratings.perl.org/d/Hash-Merge-Simple>

    *   Search CPAN

        <http://search.cpan.org/dist/Hash-Merge-Simple>

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

    Sebastian Riedel "sri@cpan.org"

    Yuval Kogman "nothingmuch@woobling.org"

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.