Re: [Boost-users] [Units] help with type-safe unit-specific conversions

It asserts because a base_unit is just a tag type. Try us::foot_base_unit::unit_type.

Ah, that works as intended - do you think you could make it more explicit in the documentation how to do this? E.g., as part of "runtime conversions", ... typedef us_dollar_base_unit::unit_type us_dollar; typedef euro_base_unit::unit_type euro; void foo() { quantity<us_dollars> dollars(10.0*us_dollars); quantity<euro> euros(dollars); std::cout << dollars << " is " << euros << std::endl; } Thanks, Justin