Struct 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 duplicate 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,

Restrict a value to a certain interval.

impl PartialEq for DataKeyMetadata

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 5 bytes