Assign to this set the result of subtracting the specified rhs.
Assign to this set the subtraction of the specified rhs set from this set (i.e., a set containing elements that are in this set, but not in the rhs set), and return a reference providing modifiable access to this set.
a reference providing modifiable access to this set
| Name | Description |
|---|---|
| rhs | set to subtract from this set |