Move-assign
a ip::basic_resolver
from another.
basic_resolver & operator=( basic_resolver && other);
This assignment operator moves a resolver from one object to another. Cancels any outstanding asynchronous operations associated with the target object.
The other ip::basic_resolver
object from which the move will occur.
Following the move, the moved-from object is in the same state as if constructed
using the basic_resolver(io_context&) constructor
.