DB<168> @n= ("") x $p    #default
 => ("", "", "", "", "", "")

  DB<169> @n[ @pos{@head1} ] = @{ $arr1->[1] }
 => ("ike", "boss", 12, 44)

  DB<170> @n
 => ("ike", "boss", 12, 44, "", "")

  DB<171> @n= ("") x $p    #default
 => ("", "", "", "", "", "")

  DB<172> @n[ @pos{@head2} ] = @{ $arr2->[1] }
 => ("a1", "grr", 3)

  DB<173> @n
 => ("", "", "", 3, "a1", "grr")