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

The difference is that meters_per_second is an object, not a type:

static const si::velocity meters_per_second;

I see.

At this point, I prefer to use the type, because I don't like having to come up with two different names for the type and the global constant.

That is a pain. I suppose that it would also be possible to use only the

object, and use decltype whenever you need a type.

I tried using the decltype to get the type but got an error. Is this how you meant to use it? typedef metric::nautical_mile_base_unit::unit_type nautical_mile_unit; static const nautical_mile_unit nautical_mile; quantity(2.3 * nautical_mile); Ryan