Re: [Boost-users] [units] Creating a velocity unit

Subject: Re: [Boost-users] [units] Creating a velocity unit
From: Ryan (boost_at_[hidden])
Date: 2013-02-21 16:56:10

>
> Yes, that's what I meant, but now that I see it written
> out, it's wrong because decltype keeps the const qualifier.
> You need the behavior of the non-standard typeof operator.
> BOOST_TYPEOF should work.
>

quantity<BOOST_TYPEOF(nautical_mile)>(2.3 * nautical_mile);

I tried this and it works.  Is there a method, template or macro that lets
me create the following two line like BOOST_UNITS_STATIC_CONSTANT?

typedef metric::nautical_mile_base_unit::unit_type nautical_mile_unit;
static const nautical_mile_unit nautical_mile;

That way I don't have to create a name for the type and only use
BOOST_TYPEOF if I need the type from the global constant.

Ryan