int_hash

This crate attempts to provide the fastest option for integer key hashmaps in the Rust language.

While the function's performance does seem superior for 64-bit data in benchmarks, it does not clearly surpass fx-hash and seems to be more volatile in practice. Because of this I would recommend the rustc-hash crate for integer hash maps & sets.

lib.rs:

Very fast, very simple hash algorithm designed for use in integer hash maps & sets.

This crate attempts to provide the fastest option for integer key hashmaps. So the algorithm may change if a better method is found for this use case.

When hashing data larger than 64-bits the hasher will fallback to a secondary algorithm suitable for arbitrary data (defaults to FxHasher).

Example

use int_hash::IntHashMap;
let mut map: IntHashMap<u32, &str> = IntHashMap::default();
map.insert(22, "abc");