...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::units::operator<<
// In header: <boost/units/io.hpp> template<typename Char, typename Traits, typename Dimension, typename System> std::basic_ostream< Char, Traits > & operator<<(std::basic_ostream< Char, Traits > & os, const unit< Dimension, System > & u);
Print an unit
as a list of base units and exponents
for symbol_format
this gives e.g. "m s^-1" or "J" for name_format
this gives e.g. "meter second^-1" or "joule" for raw_format
this gives e.g. "m s^-1" or "meter kilogram^2 second^-2" for typename_format
this gives the typename itself (currently demangled only on GCC)