Move-construct a posix::basic_descriptor
from a descriptor
of another executor type.
template< typename Executor1> basic_descriptor( basic_descriptor< Executor1 > && other, constraint_t< is_convertible< Executor1, Executor >::value, defaulted_constraint > = defaulted_constraint());
This constructor moves a descriptor from one object to another.
The other posix::basic_descriptor
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_descriptor(const executor_type&)
constructor.