You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: static_str.rs
    path of file: ./repos/objc2/crates/objc2-encode/src
    
    the code of the file until where you have to start completion: use crate::helper::{Helper, NestingLevel};

use super::Encoding;

pub(crate) const fn static_int_str_len(mut n: u64) -> usize {
    let mut i = 0;
    if n == 0 {
        return 1;
    }
    while n > 0 {
        n /= 10;
        i += 1;
    }
    i
}

pub(crate) const fn static_int_str_array<const RES: usize>(mut n: u64) -> [u8; RES] {
  
    
    fn test_const_int_str() {
        const STR_0: &str = const_int_str!(0);
        const STR_4: &str = const_int_str!(4);
        const STR_42: &str = const_int_str!(42);
        const STR_100: &str = const_int_str!(100);
        const STR_999: &str = const_int_str!(999);
        const STR_1236018655: &str = const_int_str!(1236018655);

        assert_eq!(STR_0, "0");
        assert_eq!(STR_4, "4");
        assert_eq!(STR_42, "42");
        assert_eq!(STR_100, "100");
        assert_eq!(STR_999, "999");
        assert_eq!(STR_1236018655, "1236018655");
    }