Enum icu_provider_export::DeduplicationStrategy

#[non_exhaustive]
pub enum DeduplicationStrategy {
    Maximal,
    RetainBaseLanguages,
    None,
}

Choices for determining the deduplication of locales for exported data payloads.

Deduplication affects the lookup table from locales to data payloads. If a child locale points to the same payload as its parent locale, then the child locale can be removed from the lookup table. Therefore, all deduplication strategies guarantee that data requests for selected locales will succeed so long as fallback is enabled at runtime (either internally or externally). They also do not impact which payloads are included: only the lookup table.

Comparison of the deduplication strategies:

Name	Data file size	Supported locale queries?	Needs runtime fallback?
Maximal	Smallest	No	Yes
RetainBaseLanguages	Small	Yes	Yes
None	Medium/Small	Yes	No

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.

Maximal

Removes from the lookup table any locale whose parent maps to the same data.

RetainBaseLanguages

Removes from the lookup table any locale whose parent maps to the same data, except if the parent is und.

None

Keeps all selected locales in the lookup table.

Trait Implementations

impl Clone for DeduplicationStrategy

fn clone(&self) -> DeduplicationStrategy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DeduplicationStrategy

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

Formats the value using the given formatter.

impl From<DeduplicationStrategy> for FallbackOptions

fn from(deduplication_strategy: DeduplicationStrategy) -> Self

Converts to this type from the input type.

impl Hash for DeduplicationStrategy

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 DeduplicationStrategy

fn eq(&self, other: &DeduplicationStrategy) -> 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 Copy for DeduplicationStrategy

impl Eq for DeduplicationStrategy

impl StructuralPartialEq for DeduplicationStrategy