Function onigiri::validator::is_positive_integer

pub fn is_positive_integer(vc: &[char]) -> bool

Validate Vec<char> whether it is positive integer.

use onigiri::validator::is_positive_integer;

let test_chars_1 = vec!['1', '2', '3'];
let test_chars_2 = vec!['2', '+', '1']; 
let test_chars_3 = vec!['-', '1', '2'];

assert_eq!(
    is_positive_integer(&test_chars_1),
    true
);
assert_eq!(
    is_positive_integer(&test_chars_2),
    false
);
assert_eq!(
    is_positive_integer(&test_chars_3),
    false
);