...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
ref
and cref
were originally part of the Tuple library
by Jaakko Järvi. They were "promoted to boost:: status" by
Peter Dimov because they are generally useful. Douglas Gregor and
Dave Abrahams contributed
is_reference_wrapper
and
unwrap_reference
.