code: def find_value(data, path)
        return (path.nil? or data.nil?) ? nil :
            path.split('.').inject(data) do |node, section|
              break if node.nil?
              key = section.to_sym
              (node.is_a?(Hash) and node.include?(key)) ? node[key] : nil
            end
      end
docs: Finds a value for string of format 'level1.level2.name' in a given hash.