See Boost.Units: https://www.boost.org/doc/libs/1_65_0/doc/html/boost_units.html https://www.boost.org/doc/libs/1_65_0/doc/html/boost_units.h... It enforces co

See Boost.Units: https://www.boost.org/doc/libs/1_65_0/doc/html/boost_units.html https://www.boost.org/doc/libs/1_65_0/doc/html/boost_units.h... It enforces correct units/dimensions at compile time, so you won’t be able to mix up length with time or area, etc.