Quantities

The term quantities bundles a set of quantity types which are basically floating point¹ values with physical units (e.g. Meter, Liters,...) attached.

// declare variable `height` of type `Length` to 1.4 Meters
height = 1.4m;

// use as *default* value in parameter list
fn f(height = 1m) {}

// calculate a `Length` called `width` by multiplying the
// `height` with `Scalar` `2` and add ten centimeters
width = height * 2 + 10cm;

1. see wikipedia about floating point ↩