Type Alias BaseQuantityVector 

pub type BaseQuantityVector = BTreeMap<String, i32>;

A dimensional decomposition vector. Maps quantity-type names to integer exponents. For example, velocity {length: 1, duration: -1} or acceleration {length: 1, duration: -2}. An empty map indicates a base quantity (no decomposition) until the decomposition pass runs, after which every quantity carries a non-empty vector.

Aliased Type

pub struct BaseQuantityVector { /* private fields */ }