Function re_power 

pub fn re_power(r: RegLan, k: u32) -> RegLan

Power

Example

use aws_smt_strings::smt_regular_expressions::*;

let digit = re_range(&"0".into(), &"9".into());
let three_digits = re_power(digit, 3);
assert!(str_in_re(&"124".into(), three_digits));