module SimpleCov::ArrayMergeHelper

def merge_resultset(array)
  new_array = dup
  array.each_with_index do |element, i|
    if element.nil? && new_array[i].nil?
      new_array[i] = nil
    else
      local_value = element || 0
      other_value = new_array[i] || 0
      new_array[i] = local_value + other_value
    end
  end
  new_array
end