rufl/string/
after_last.rs

1/// Returns the substring after the last occurrence of a specified `substr` in the source string.
2///
3/// # Arguments
4///
5/// * `s` - The input string to perform after_last operation.
6/// * `substr` - The substring to look for last occurrence in `s`.
7///
8/// # Returns
9///
10/// Returns the substring after the last occurrence of `substr` in `s`.
11///
12/// # Examples
13///
14/// ```
15/// use rufl::string;
16///
17/// let foo = string::after_last("foo", "o");
18/// assert_eq!("", foo);
19///
20/// let bar = string::after_last("bar", "a");
21/// assert_eq!("r", bar);
22///
23/// let boo = string::after_last("boo", "c");
24/// assert_eq!("boo", boo);
25///
26/// ```
27
28pub fn after_last(s: impl AsRef<str>, substr: &str) -> String {
29    match s.as_ref().rfind(substr) {
30        Some(index) => s.as_ref()[index + substr.len()..].to_string(),
31        None => s.as_ref().to_string(),
32    }
33}
34
35#[cfg(test)]
36mod tests {
37    use super::*;
38
39    #[test]
40    fn test_after_last() {
41        assert_eq!("", after_last("foo", ""));
42        assert_eq!("", after_last("foo", "o"));
43        assert_eq!("", after_last("foo", "foo"));
44        assert_eq!("foo", after_last("foo", "a"));
45        assert_eq!("boo", after_last("foo/bar/boo", "/"));
46
47        assert_eq!("rust", after_last("你好c++你好rust", "你好"));
48        assert_eq!(
49            " programátor",
50            after_last("Jsem počítačový programátor", "počítačový")
51        );
52    }
53}
rufl/string/after_last.rs

rufl/string/
after_last.rs
