/ 
Zwoelf-Hash-Union-0.1
River stage zero No dependents
/ Zwoelf::Hash::Union

NAME

Zwoelf::Hash::Union

DESCRIPTION

Work in progress: Menat to merge to hashes together like Hash::Merge BUT will produce unions of any arrays that occur under the same key

SYNOPSIS

use Zwoelf::Hash::Union qw( merge_hash unique_array );

unique_array([ {a=>1}, {b=>2}, {c=>3}, {b=>2} ])
# yields
[{ a => 1 }, { b => 2 }, { c => 3 }];

merge_hash(
    { a => 1, b => [{ b => 2 }, { c => 3 }] },
    { a => 2, b => [{ b => 2 }, { d => 4 }] },
);
# yields
{ a => 2, b => [{ b => 2}, { c => 3 }, { d => 4 }] },

merge_hash(
    { a => 1, b => [{ b => 2 }, { c => 3 }] },
    { a => 2, b => [{ b => 2 }, { d => 4 }] },
    'LEFT_PRECEDENT'
);
# yields
{ a => 1, b => [{ b => 2}, { c => 3 }, { d => 4 }] },