Enum WeightedStore 

pub enum WeightedStore<T> {
    Values(Vec<WeightedValue<T>>),
    NoValue {
        message: String,
    },
}

A weighted value store for a single weighted property.

Held only for the genuinely weighted properties (CountryCodesGeographical, CountryCodesPopulation, Mcc). It mirrors the two states of an AspectPropertyValue: an ordered list of weighted candidates, or a no-value message. The list is held high weighting first; the constructor sorts it for you.

Variants

Values(Vec<WeightedValue<T>>)

One or more weighted candidate values, ordered high weighting first.

NoValue

No value could be determined. The message explains why.

Fields

message: String

The explanation surfaced through the accessor when read.

Implementations

impl<T> WeightedStore<T>

pub fn values(list: Vec<WeightedValue<T>>) -> Self

Build a store from a list of weighted candidates, sorting it high weighting first.

An empty list is stored as the WeightedStore::Values variant (an empty distribution), not as a no-value. Use WeightedStore::no_value when the engine could determine nothing.

pub fn no_value(message: impl Into<String>) -> Self

Build a no-value store carrying the supplied explanatory message.

pub fn list(&self) -> Result<&[WeightedValue<T>], NoValueError>

Borrow the weighted list, or Err(NoValueError) carrying the stored message if this is a no-value.

Trait Implementations

impl<T: Clone> Clone for WeightedStore<T>

fn clone(&self) -> WeightedStore<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for WeightedStore<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: PartialEq> PartialEq for WeightedStore<T>

fn eq(&self, other: &WeightedStore<T>) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<T: PartialEq> StructuralPartialEq for WeightedStore<T>