...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 a unit
as a list of base units and their exponents.
for symbol_format
outputs e.g. "m s^-1" or "J". for name_format
outputs e.g. "meter second^-1" or "joule". for raw_format
outputs e.g. "m s^-1" or "meter kilogram^2 second^-2". for typename_format
outputs the typename itself (currently demangled only on GCC).