Every ordinance or resolution repealing a previous ordinance or resolution or section or subdivision thereof shall give the number, if any, and the title of the ordinance or resolution to be repealed in whole or in part. No ordinance or resolution or section or subdivision thereof shall be amended by reference to the title alone, but such an amending ordinance or resolution shall set forth in full each section or subdivision to be amended together with the amended form thereof. In newspaper publications a method shall be used that will clearly indicate new matter and old matter to be omitted.