Re: [boost] [Units] A first step to ease the usage of Units' quantities inside of functors created with the Lambda library

From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2008-06-04 15:00:16

AMDG

Torsten Maehne wrote:
> * Maybe drop specialization for
>   quantity<BOOST_UNITS_DIMENSIONLESS_UNIT(System),Y>?
>   

These specializations should not be needed.

> * Are the specializations for boost::units::one needed in the
>   context of Boost.Lambda? It seems to be an implementation
>   detail of Boost.Units.
>   

Yes it's an implementation detail.  You can leave off these specializations.

> * Work out a solution for boost::lambda:bind's limitation
>   concerning the binding of overloaded functions. The required
>   static_cast to the function pointer (referring, e.g., a
>   function from boost/units/cmath.hpp) is tedious. (I had no time yet to
>   test Steven's proposal to use functors with appropriate sig template.)
>   

This strikes me as being a separate issue, which doesn't belong in the 
units library.

> * All checks involving the multiplication/division of
>   boost::units::unit and boost::units::absolute<boost::units::unit>
>   types are not compiling. The compiler complains about ambiguous
>   overloads for operator* and operator/ (originating from Boost.Units
>   and Boost.Lambda). Therefore they are currently commented out.
>   
These shouldn't compile.
> * The check fo unit<Dim1, System1> - unit<Dim2, System2> is not
>   compiling. The compiler finds no matching definition of operator-.
>   
Again these shouldn't compile.

In Christ,
Steven Watanabe