struct Foo<'a, T: 'a> {
    inner: &'a [T],
}

impl <'a, T>Foo<'a, T> {
    pub fn new(inner: &'a [T]) -> Self {
        Foo { inner }
    }
}

fn main() {
    let a = "a".to_string();
    let b = "b".to_string();
    let c = "c".to_string();

    let _a = Foo::new(&[a, b, c]);
}