# takes an array of hashes and prints as a table on the console
def table_print(rows)
  table = [rows.first.keys.map(&:to_s)] + rows.map(&:values).map { |v| v.map(&:to_s) }
  sizes = table.map { |row| row.map(&:size) }.transpose.map(&:max)
  puts table.map { |row| row.each_with_index.map { |txt, idx| txt.rjust(sizes[idx]) }.join("\t") }.join("\n")
end