Function neure::neu::digit

pub const fn digit(radix: u32) -> Digit

Reference is_digit.

Example

use neure::prelude::*;
use neu::*;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let digit = digit(10);
    let digit = digit.repeat_times::<2>();
    let mut ctx = CharsCtx::new("54aa");

    assert_eq!(ctx.try_mat(&digit)?, Span::new(0, 2));
    assert!(ctx.try_mat(&digit).is_err());
    Ok(())
}