Struct icu_provider::key::DataKeyMetadata

#[non_exhaustive]
pub struct DataKeyMetadata {
    pub fallback_priority: LocaleFallbackPriority,
    pub extension_key: Option<Key>,
    pub fallback_supplement: Option<LocaleFallbackSupplement>,
    pub singleton: bool,
}

Metadata statically associated with a particular DataKey.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

fallback_priority: LocaleFallbackPriority

What to prioritize when fallbacking on this DataKey.

extension_key: Option<Key>

A Unicode extension keyword to consider when loading data for this DataKey.

fallback_supplement: Option<LocaleFallbackSupplement>

Optional choice for additional fallbacking data required for loading this marker.

For more information, see LocaleFallbackConfig::fallback_supplement.

singleton: bool

Whether the key has a singleton value, as opposed to per-locale values. Singleton keys behave differently, e.g. they never perform fallback, and can be optimized in data providers.

Implementations

impl DataKeyMetadata

pub const fn const_default() -> Self

Const-friendly version of Default::default.

Trait Implementations

impl Clone for DataKeyMetadata

fn clone(&self) -> DataKeyMetadata

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DataKeyMetadata

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

Formats the value using the given formatter.

impl Default for DataKeyMetadata

fn default() -> Self

Returns the “default value” for a type.

impl Ord for DataKeyMetadata

fn cmp(&self, other: &DataKeyMetadata) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for DataKeyMetadata

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for DataKeyMetadata

fn partial_cmp(&self, other: &DataKeyMetadata) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for DataKeyMetadata

impl Eq for DataKeyMetadata

impl StructuralPartialEq for DataKeyMetadata