Enum MeasurementSystem

#[non_exhaustive]
pub enum MeasurementSystem {
    Metric,
    USSystem,
    UKSystem,
}

A Unicode Measurement System Identifier defines a preferred measurement system.

Specifying “ms” in a locale identifier overrides the default value specified by supplemental measurement system data for the region

The valid values are listed in LDML.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Metric

Metric System

USSystem

US System of measurement: feet, pints, etc.; pints are 16oz

UKSystem

UK System of measurement: feet, pints, etc.; pints are 20oz

Implementations

impl MeasurementSystem

pub const fn as_str(&self) -> &'static str

A helper function for displaying as a &str.

Trait Implementations

impl Clone for MeasurementSystem

fn clone(&self) -> MeasurementSystem

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MeasurementSystem

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

Formats the value using the given formatter.

impl From<MeasurementSystem> for Value

fn from(input: MeasurementSystem) -> Value

Converts to this type from the input type.

impl Hash for MeasurementSystem

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for MeasurementSystem

fn eq(&self, other: &MeasurementSystem) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PreferenceKey for MeasurementSystem

fn unicode_extension_key() -> Option<Key>

Retrieve unicode extension key corresponding to a given preference.

fn try_from_key_value( key: &Key, value: &Value, ) -> Result<Option<Self>, PreferencesParseError>

Optional constructor of the given preference. It takes the unicode extension key and if the key matches it attemptes to construct the preference based on the given value. If the value is not a valid value for the given key, the constructor throws.

fn unicode_extension_value(&self) -> Option<Value>

Retrieve unicode extension value corresponding to the given instance of the preference.

impl TryFrom<&Value> for MeasurementSystem

type Error = PreferencesParseError

The type returned in the event of a conversion error.

fn try_from(s: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for MeasurementSystem

impl Eq for MeasurementSystem

impl StructuralPartialEq for MeasurementSystem