Add key/data if key is not already in the list.
Declared in <bdlcc_skiplist.h>
int
addUnique(
KEY const& key,
DATA const& data,
bool* newFrontFlag = 0);Insert key/data if key is not already in the list.
Add the specified key / data pair to this list. Load into the the optionally specified newFrontFlag a true value if the pair is at the front of the list, and a false value otherwise. Return 0 on success, and a non-zero value (with no effect on the list) if key is already in the list.
0 on success, and a non-zero value if key already exists
| Name | Description |
|---|---|
| key | key of the pair |
| data | data associated with key |
| newFrontFlag | if non-null, set to whether the pair is at the front |