Function str_concat::concat_unordered

pub fn concat_unordered<'a>(a: &'a str, b: &'a str) -> Result<&'a str, Error>

Concatenate two adjacent string slices no matter their order.

This is the same as concat except that it also concatenates b to a if b is in front of a (in which case concat errors).

Examples

Reversed order:

let s = "0123456789";
assert_eq!("0123456", concat_unordered(&s[5..7], &s[..5]).unwrap());

Normal order:

let s = "0123456789";
assert_eq!("0123456", concat_unordered(&s[..5], &s[5..7]).unwrap())