#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(trim_prefix_suffix)]
fn main() {
    assert_eq!("bar:foo".trim_suffix(":foo"), "bar");
    assert_eq!("foofoo".trim_suffix("foo"), "foo");
    assert_eq!("bar:foo".trim_suffix("bar"), "bar:foo");
    assert_eq!(
        "<https://example.com/>".trim_prefix('<').trim_suffix('>'),
        "https://example.com/"
    );
}