Function icu::properties::sets::load_xid_start

pub fn load_xid_start(
    provider: &impl DataProvider<XidStartV1Marker>
) -> Result<CodePointSetData, PropertiesError>

Characters that can begin an identifier. See Unicode Standard Annex #31 for more details.

Example

use icu_properties::sets;

let data =
    sets::load_xid_start(&icu_testdata::unstable())
        .expect("The data should be valid");
let xid_start = data.as_borrowed();

assert!(xid_start.contains('x'));
assert!(!xid_start.contains('1'));
assert!(!xid_start.contains('_'));
assert!(xid_start.contains('ߝ'));  // U+07DD NKO LETTER FA
assert!(!xid_start.contains('ⓧ'));  // U+24E7 CIRCLED LATIN SMALL LETTER X
assert!(!xid_start.contains32(0xFC5E));  // ARABIC LIGATURE SHADDA WITH DAMMATAN ISOLATED FORM