You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: segment.rs
    path of file: ./repos/moka/src/cht
    
    the code of the file until where you have to start completion: //! Segmented lock-free hash tables.
//!
//! Segmented hash tables divide their entries between a number of smaller
//! logical hash tables, or segments. Each segment is entirely independent from
//! the others, and entries are never relocated across segment boundaries.
//!
//! In the context of this crate, a segment refers specifically to an array of
//! bucket pointers. The number of segments in a hash table is rounded up to the
//! nearest power of two; this is so that selecting the segment for a key is no
//! more than a right shift to select the most significan
    
    fn remove_if() {
        const NUM_VALUES: i32 = 512;

        let is_even = |_: &i32, v: &i32| *v % 2 == 0;

        let map = HashMap::with_capacity(0);

        for i in 0..NUM_VALUES {
            assert_eq!(map.insert_entry_and(i, map.hash(&i), i, |_, v| *v), None);
        }

        for i in 0..NUM_VALUES {
            if is_even(&i, &i) {
                assert_eq!(map.remove_if(map.hash(&i), |&k| k == i, is_even), Some(i));
            } else {
                assert_eq!(map.remove_if(map.hash(&i), |&k| k == i, is_even), None);
            }
        }

        for i in (0..NUM_VALUES).filter(|i| i % 2 == 0) {
            assert_eq!(map.get(map.hash(&i), |&k| k == i), None);
        }

        for i in (0..NUM_VALUES).filter(|i| i % 2 != 0) {
            assert_eq!(map.get(map.hash(&i), |&k| k == i), Some(i));
        }

        run_deferred();
    }