Struct XidStart

#[non_exhaustive]
pub struct XidStart;

Characters that can begin an identifier.

See Unicode Standard Annex #31 for more details.

Example

use icu::properties::CodePointSetData;
use icu::properties::props::XidStart;

let xid_start = CodePointSetData::new::<XidStart>();

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.contains('\u{FC5E}'));  // ARABIC LIGATURE SHADDA WITH DAMMATAN ISOLATED FORM

Trait Implementations

impl BinaryProperty for XidStart

const NAME: &'static [u8]

The name of this property

const SHORT_NAME: &'static [u8]

The abbreviated name of this property, if it exists, otherwise the name

fn for_char(ch: char) -> bool

Convenience method for CodePointSetData::new().contains(ch)

impl Debug for XidStart

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

Formats the value using the given formatter.