Comments (3)
In this situation, I explicitly divide by what I expect the units to be. That should give you a dimensionless value. Then you can use the value()
method from the Dimensionless
trait. Note that value()
returns a reference, so you'll have to dereference it as well:
fn send_speed_command(speed: si::MeterPerSecond<f64>) {
let command = ApiCommand {
speed_mps: *(speed / si::MPS).value(),
};
send(command);
}
from dimensioned.
Just curious... why is there a specific type for dimensionless values? I would expect this to work instead:
let x :f64 = speed / si::MPS;
Also, i'd expect to be able to use an .into
if there's a good reason for a unitless type
let x :f64 = (speed / si::MPS).into();
from dimensioned.
I think a dimensionless your is valuable because when you've got an f64
it may or may not actually hold a dimensional value, e.g. a distance a user provided. If an f64
were treated as dimensionless then it would be very hard to audit a coffee to ensure that all dimensions are correct.
from dimensioned.
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from dimensioned.