Enum LocaleFallbackPriority 

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

Hint for which subtag to prioritize during fallback.

For example, "en-US" might fall back to either "en" or "und-US" depending on this enum.

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 LocaleFallbackPriority

pub const fn const_default() -> LocaleFallbackPriority

Const-friendly version of Default::default.

Trait Implementations

impl Clone for LocaleFallbackPriority

fn clone(&self) -> LocaleFallbackPriority

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LocaleFallbackPriority

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

Formats the value using the given formatter.

impl Default for LocaleFallbackPriority

fn default() -> LocaleFallbackPriority

Returns the “default value” for a type.

impl Ord for LocaleFallbackPriority

fn cmp(&self, other: &LocaleFallbackPriority) -> 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 LocaleFallbackPriority

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

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

impl Eq for LocaleFallbackPriority

impl StructuralPartialEq for LocaleFallbackPriority

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: 1 byte

Size for each variant:

• Language: 0 bytes
• Region: 0 bytes
• Collation: 0 bytes