#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::hint::black_box;
fn contains(haystack: &[&str], needle: &str) -> bool {
    haystack.iter().any(|x| x == &needle)
}
pub fn benchmark() {
    let haystack = vec!["abc", "def", "ghi", "jkl", "mno"];
    let needle = "ghi";
    for _ in 0..10 {
        black_box(contains(black_box(&haystack), black_box(needle)));
    }
}
fn main() {}