pub fn group(val: &str, args: Vec<&str>) -> Result<String, TransformerError>Expand description
Insert characters to the given string in provided positions
assert_eq!(group("1234", vec![",", "3"])?, "1,234");
assert_eq!(group("1234567", vec!["_", "3"])?, "1_234_567");
assert_eq!(group("1234567", vec![", ", "3", "2"])?, "12, 34, 567");
assert_eq!(group("91234567", vec!["_", "3", "2"])?, "9_12_34_567");