Struct IdStart 

#[non_exhaustive]
pub struct IdStart;

Characters that can begin an identifier.

If using NFKC to fold differences between characters, use XidStart instead. See Unicode Standard Annex #31 for more details.

Example

use icu::properties::CodePointSetData;
use icu::properties::props::IdStart;

let id_start = CodePointSetData::new::<IdStart>();

assert!(id_start.contains('x'));
assert!(!id_start.contains('1'));
assert!(!id_start.contains('_'));
assert!(id_start.contains('ߝ'));  // U+07DD NKO LETTER FA
assert!(!id_start.contains('ⓧ'));  // U+24E7 CIRCLED LATIN SMALL LETTER X
assert!(id_start.contains('\u{FC5E}'));  // ARABIC LIGATURE SHADDA WITH DAMMATAN ISOLATED FORM

Trait Implementations

impl BinaryProperty for IdStart

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 IdStart

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

Formats the value using the given formatter.