Boost
C++ Libraries
...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. Frank Mori Hess and Ronald
Garcia contributed boost::unwrap_ref