Re: [boost] mcs::units informal review request

From: Matthias Schabel (boost_at_[hidden])
Date: 2007-02-12 16:29:18

> Not necessarily.  static_multiply has to be
> able to operate on an mpl::list.

Exactly...

>> There is also a
>> lack of meta functions to identify units and quantities as types  
>> (only
>> dimensions have this functionality) for use in such things as  
>> enable_if
>> and other meta programming utilities.
>
> Good point.

I've added

is_dimension<D>
is_unit<U>
is_unit_of_system<U,S>
is_quantity<Q>
is_quantity_of_system<Q,S>

for the next version. I should probably also allow querying the  
existence
of an explicit conversion...although I suspect is_convertible already  
does
that...

Matthias