Enum icu_provider::FallbackPriority

#[non_exhaustive]
pub enum FallbackPriority {
    Language,
    Region,
    Collation,
}

Hint for what to prioritize during fallback when data is unavailable.

For example, if "en-US" is requested, but we have no data for that specific locale, fallback may take us to "en" or "und-US" to check for data.

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.

Language

Prioritize the language. This is the default behavior.

For example, "en-US" should go to "en" and then "und".

Region

Prioritize the region.

For example, "en-US" should go to "und-US" and then "und".

Collation

Collation-specific fallback rules. Similar to language priority.

For example, "zh-Hant" goes to "zh" before "und".

Implementations

impl FallbackPriority

pub const fn const_default() -> Self

Const-friendly version of Default::default.

Trait Implementations

impl Clone for FallbackPriority

fn clone(&self) -> FallbackPriority

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FallbackPriority

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

Formats the value using the given formatter.

impl Default for FallbackPriority

fn default() -> Self

Returns the “default value” for a type.

impl Ord for FallbackPriority

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<FallbackPriority> for FallbackPriority

fn eq(&self, other: &FallbackPriority) -> 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<FallbackPriority> for FallbackPriority

fn partial_cmp(&self, other: &FallbackPriority) -> 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 FallbackPriority

impl Eq for FallbackPriority

impl StructuralEq for FallbackPriority

impl StructuralPartialEq for FallbackPriority