Function icu_properties::sets::xid_start
source · pub const fn xid_start() -> CodePointSetDataBorrowed<'static>
Expand description
Characters that can begin an identifier. See Unicode Standard Annex #31
for more
details.
✨ Enabled with the compiled_data
Cargo feature.
§Example
use icu::properties::sets;
let xid_start = sets::xid_start();
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