| reference_wrapper(3) | reference_wrapper(3) |
reference_wrapper - reference container
#include <cfl/containers/reference_wrapper.hpp>
int i {0};
// reference_wrapper_c <int &>
auto && u = reference_wrapper (i);
// int
auto && v = reference_wrapper (0);
Puts values of reference type into a container, which then can be used to reseat references. A non-reference type argument is a no-op.
The inner value is retreived with the get access function. However, the
reference_wrapper_c container is also implicitly constructible from its
element type, and implicitly convertible back again. This requires some caution
from the user.
reference_wrapper is mainly intended for library implementation details and
not for the end user.