Enum CollationNumericOrdering

#[non_exhaustive]
pub enum CollationNumericOrdering {
    True,
    False,
}

Collation parameter key for numeric handling.

If set to on, any sequence of Decimal Digits (General_Category = Nd in the UAX44) is sorted at a primary level with its numeric value. For example, “1” < “2” < “10”. The computed primary weights are all at the start of the digit reordering group.

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.

True

A sequence of decimal digits is sorted at primary level with its numeric value

False

No special handling for numeric ordering

Implementations

impl CollationNumericOrdering

pub const fn as_str(&self) -> &'static str

A helper function for displaying as a &str.

Trait Implementations

impl Clone for CollationNumericOrdering

fn clone(&self) -> CollationNumericOrdering

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CollationNumericOrdering

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

Formats the value using the given formatter.

impl Default for CollationNumericOrdering

fn default() -> CollationNumericOrdering

Returns the “default value” for a type.

impl From<CollationNumericOrdering> for Value

fn from(input: CollationNumericOrdering) -> Value

Converts to this type from the input type.

impl Hash for CollationNumericOrdering

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

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 CollationNumericOrdering

fn eq(&self, other: &CollationNumericOrdering) -> 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 PreferenceKey for CollationNumericOrdering

fn unicode_extension_key() -> Option<Key>

Retrieve unicode extension key corresponding to a given preference.

fn try_from_key_value( key: &Key, value: &Value, ) -> Result<Option<CollationNumericOrdering>, PreferencesParseError>

Optional constructor of the given preference. It takes the unicode extension key and if the key matches it attemptes to construct the preference based on the given value. If the value is not a valid value for the given key, the constructor throws.

fn unicode_extension_value(&self) -> Option<Value>

Retrieve unicode extension value corresponding to the given instance of the preference.

impl TryFrom<&Value> for CollationNumericOrdering

type Error = PreferencesParseError

The type returned in the event of a conversion error.

fn try_from( s: &Value, ) -> Result<CollationNumericOrdering, <CollationNumericOrdering as TryFrom<&Value>>::Error>

Performs the conversion.

impl Copy for CollationNumericOrdering

impl Eq for CollationNumericOrdering

impl StructuralPartialEq for CollationNumericOrdering