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 }] },