Re: [Boost-users] [units] Creating specific unit quantities

Subject: Re: [Boost-users] [units] Creating specific unit quantities
From: Ryan (mccorywork_at_[hidden])
Date: 2011-03-16 17:25:43

On Mon, Mar 7, 2011 at 5:35 PM, Matthias Schabel
<boost_at_[hidden]>wrote:

>  #include <boost/units/quantity.hpp>
> #include <boost/units/systems/si.hpp>
> #include <boost/units/base_units/us/foot.hpp>
>
> using namespace boost::units;
>
>
> class Test {
>   public:
>     // takes any unit of length
>     template<class System>
>     void setX(quantity<unit<length_dimension,System> > const& x) {
>       // explicit conversion to si::length = meters
>       m_X = quantity<si::length>(x);
>      }
>   private:
>     quantity<si::length> m_X;
> };
>

void setY(quantity<unit<???, System> > const& y) {
  m_Y = quantity<si::dimensionless>(y);
}

I would like to be able to accept any systems dimensionless quantity.  Since
dimensionless isn't a physical system I obviously didn't find a tag I could
use like length_dimension.  What should I do here?

Ryan