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pub fn remove_to<'s>(s: &'s str, c: char) -> &'s str {
match s.rfind(c) {
Some(pos) => &s[(pos + 1)..],
None => s,
}
}
pub fn remove_suffix<'s>(s: &'s str, suffix: &str) -> &'s str {
if !s.ends_with(suffix) {
s
} else {
&s[..(s.len() - suffix.len())]
}
}
#[cfg(test)]
mod test {
use super::remove_suffix;
use super::remove_to;
#[test]
fn test_remove_to() {
assert_eq!("aaa", remove_to("aaa", '.'));
assert_eq!("bbb", remove_to("aaa.bbb", '.'));
assert_eq!("ccc", remove_to("aaa.bbb.ccc", '.'));
}
#[test]
fn test_remove_suffix() {
assert_eq!("bbb", remove_suffix("bbbaaa", "aaa"));
assert_eq!("aaa", remove_suffix("aaa", "bbb"));
}
}
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