Function get_idx_before

pub fn get_idx_before(text: &str, begin: &str) -> usize

Return the index of an occurence. If there is no occurence, the index is the len of the text.

use string_tools::get_idx_before;
 
assert_eq!(get_idx_before("azertyuiopqsdfghjklmwxcvbn", "sdf"), 11);
assert_eq!(get_idx_before("azertyuiopqsdfghjklmwxcvbn", "123"), 26);