Copy-assign the target from rhs and return *this.
Set the target of this object to a copy of the target (if any) held by the specified rhs object, destroy the target (if any) previously held by *this, and return *this. The result is equivalent to having constructed *this from rhs using the extended copy constructor with allocator this->get_allocator(). If an exception is thrown, *this is not modified (i.e., copy assignment provides the strong exception guarantee).
reference providing modifiable access to this object
| Name | Description |
|---|---|
| rhs | function whose target is copied into this object |