References
C++ Common Knowledge, Stephen C. Dewhurst, Addison Wesley Professional
Modern C++ Design, Andrei Alexandrescu, Addison Wesley Professional
C++ Template Metaprogramming, David Abrahams and Aleksey Gurtovoy, Addison Wesley Professional
Proto: http://web.archive.org/web/20120906070131/http://cpp-next.com/archive/2011/01/expressive-c-expression-optimization/
Boost Xpressive FTW: http://ericniebler.com/2010/09/27/boost-xpressive-ftw/
Fusion: www.boost.org/libs/fusion