| 987 * Clones elements from a list only if they are not present in another list. |
987 * Clones elements from a list only if they are not present in another list. |
| 988 * |
988 * |
| 989 * If the @p minuend does not contain duplicates, this is equivalent to adding |
989 * If the @p minuend does not contain duplicates, this is equivalent to adding |
| 990 * the set difference to the destination list. |
990 * the set difference to the destination list. |
| 991 * |
991 * |
| 992 * If the destination list already contains elements, the difference |
|
| 993 * (@p dst + @p minuend) - @p subtrahend is calculated. |
|
| 994 * New items for @p dst are always appendend to the list, which means that the |
|
| 995 * destination list is not necessarily sorted. |
|
| 996 * |
|
| 997 * This function is optimized for the case when both the @p minuend and the |
992 * This function is optimized for the case when both the @p minuend and the |
| 998 * @p subtrahend are sorted. |
993 * @p subtrahend are sorted. |
| 999 * |
994 * |
| 1000 * @param dst the destination list |
995 * @param dst the destination list |
| 1001 * @param minuend the list to subtract elements from |
996 * @param minuend the list to subtract elements from |