Struct icu::properties::names::PropertyEnumToValueNameSparseMapper
source · pub struct PropertyEnumToValueNameSparseMapper<T> { /* private fields */ }
Expand description
A struct capable of looking up a property name from a value
Access its data by calling Self::as_borrowed()
and using the methods on
PropertyEnumToValueNameSparseMapperBorrowed
.
This mapper is used for properties with sparse values, like CanonicalCombiningClass
.
It may be obtained using methods like CanonicalCombiningClass::get_enum_to_long_name_mapper()
.
The name returned may be a short ("KV"
) or long ("Kana_Voicing"
) name, depending
on the constructor used.
Example
use icu::properties::CanonicalCombiningClass;
let lookup = CanonicalCombiningClass::get_enum_to_long_name_mapper(
&icu_testdata::unstable(),
)
.expect("The data should be valid");
let lookup = lookup.as_borrowed();
assert_eq!(
lookup.get(CanonicalCombiningClass::KanaVoicing),
Some("Kana_Voicing")
);
assert_eq!(
lookup.get(CanonicalCombiningClass::AboveLeft),
Some("Above_Left")
);
Implementations§
source§impl<T> PropertyEnumToValueNameSparseMapper<T>where
T: TrieValue,
impl<T> PropertyEnumToValueNameSparseMapper<T>where T: TrieValue,
sourcepub fn as_borrowed(&self) -> PropertyEnumToValueNameSparseMapperBorrowed<'_, T>
pub fn as_borrowed(&self) -> PropertyEnumToValueNameSparseMapperBorrowed<'_, T>
Construct a borrowed version of this type that can be queried.
This avoids a potential small underlying cost per API call (like get_static()
) by consolidating it
up front.