use cachekit::policy::lru_k::LRUKCache;
use cachekit::traits::CoreCache;
fn main() {
let mut cache: LRUKCache<&str, i32> = LRUKCache::with_k(2, 2);
cache.insert("a", 10);
cache.insert("b", 20);
cache.get(&"a");
cache.insert("c", 30);
println!("contains a? {}", cache.contains(&"a"));
println!("contains b? {}", cache.contains(&"b"));
}